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  • 1
    facet.materialart.12
    Cambridge : Cambridge University Press
    Call number: 9781107306189 (e-book)
    Description / Table of Contents: "The Earth is a dynamic system. Internal processes, together with external gravitational forces of the Sun, Moon and planets, displace the Earth's mass, impacting on its shape, rotation and gravitational field. Doug Smylie provides a rigorous overview of the dynamical behaviour of the solid Earth, explaining the theory and presenting methods for numerical implementation. Topics include advanced digital analysis, earthquake displacement fields, Free Core Nutations observed by the Very Long Baseline Interferometric technique, translational modes of the solid inner core observed by the superconducting gravimeters, and dynamics of the outer fluid core. This book is supported by freeware computer code, available online for students to implement the theory. Online materials also include a suite of graphics generated from the numerical analysis, combined with 100 graphic examples in the book to make this an ideal tool for researchers and graduate students in the fields of geodesy, seismology and solid earth geophysics"--
    Type of Medium: 12
    Pages: 1 Online-Ressource (XII, 543 Seiten) , Illustrationen
    Edition: Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries.
    ISBN: 9781107306189
    Language: English
    Note: Contents Preface and acknowledgments The book website www.cambridge.org/smylie 1 Introduction and theoretical background 1.1 Scalar, vector and tensor analysis 1.2 Separation of vector fields 1.3 Vector spherical harmonics 1.4 Elasticity theory 1.5 Linear algebraic systems 1.6 Interpolation and approximation 2 Time sequence and spectral analysis 2.1 Time domain analysis 2.2 Linear optimum Wiener filters 2.3 Frequency domain analysis 2.4 Fourier series and transforms 2.5 Power spectral density estimation 2.6 Maximum entropy spectral analysis 3 Earth deformations 3.1 Equilibrium equations 3.2 The reciprocal theorem of Betti 3.3 Radial equations: spheroidal and torsional 3.4 Dynamical equations 3.5 Solutions near the geocentre 3.6 Numerical integration of the radial equations 3.7 Fundamental, regular solutions in the inner core 4 Earth's rotation: observations and theory 4.1 Reference frames 4.2 Polar motion and wobble 4.3 The dynamics of polar motion and wobble 4.4 Nutation and motion of the celestial pole 5 Earth's figure and gravitation 5.1 Historical development 5.2 External gravity and figure 5.3 Equilibrium theory of the internal figure 5.4 Gravity coupling 6 Rotating fluids and the outer core 6.1 The inertial wave equation 6.2 Dynamics of the fluid outer core 6.3 Scaling of the core equations 6.4 Compressibility and density stratification 7 The subseisniic equation and boundary conditions 7.1 The subseismic wave equation 7.2 Deformation of the shell and inner core 8 Variational methods and core modes 8.1 A subseismic variational principle 8.2 Representation of the functional 8.3 Finite element support functions 8.4 Boundary conditions and constraints 8.5 Numerical implementation and results 8.6 Rotational splitting and viscosity 8.7 A viscosity profile for the outer core 9 Static deformations and dislocation theory 9.1 The elasticity theory of dislocations 9.2 The theory for realistic Earth models 9.3 Changes in the inertia tensor and the secular polar shift Appendix A Elementary results from vector analysis A.1 Vector identities A.2 Vector calculus identities A.3 Integral theorems Appendix B Properties of Legendre functions B.1 Recurrence relations B.2 Evaluation of Legendre functions Appendix C Numerical Earth models C.1 The Earth models References Fortran index Subject index
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  • 2
    facet.materialart.12
    Chichester, [England] : Wiley
    Call number: 9781444328479 (e-book)
    Type of Medium: 12
    Pages: 1 Online-Ressource (XIII, 768 Seiten) , Illustrationen
    Edition: Second edition
    ISBN: 9781444328479 (e-book) , 978-1-4443-2847-9
    Language: English
    Note: Contents Contents Preface Acknowledgements Part 1: Making Sediment Introduction Clastic sediment as a chemical and physical breakdown product 1.1 Introduction: clastic sediments—'accidents' of weathering 1.2 Silicate minerals and chemical weathering 1.3 Solute flux: rates and mechanisms of silicate chemical weathering 1.4 Physical weathering 1.5 Soils as valves and filters for the natural landscape 1.6 Links between soil age, chemical weathering and weathered-rock removal 1.7 Provenance: siliciclastic sediment-sourcing Further reading 2 Carbonate, siliceous, iron-rich and evaporite sediments 2.1 Marine vs. freshwater chemical composition and fluxes 2.2 The calcium carbonate system in the oceans 2.3 Ooid carbonate grains 2.4 Carbonate grains from marine plants and animals 2.5 Carbonate muds, oozes and chalks 2.6 Other carbonate grains of biological origins 2.7 Organic productivity, sea-level and atmospheric controls of biogenic CaCO3 deposition rates 2.8 CaCO3 dissolution in the deep ocean and the oceanic CaCO3 compensation mechanism 2.9 The carbonate system on land 2.10 Evaporite salts and their inorganic precipitation as sediment 2.11 Silica and pelagic plankton 2.12 Iron minerals and biomineralizers 2.13 Desert varnish 2.14 Phosphates 2.15 Primary microbial-induced sediments: algal mats and stromatolites Further reading 3 Sediment grain properties 3.1 General 3.2 Grain size 3.3 Grain-size distributions 3.4 Grain shape and form 3.5 Bulk properties of grain aggregates Further reading Part 2: Moving Fluid Introduction 4 Fluid basics 4.1 Material properties of fluids 4.2 Fluid kinematics 4.3 Fluid continuity with constant density 4.4 Fluid dynamics 4.5 Energy, mechanical work and power Further reading 5 Types of fluid motion 5.1 Osborne Reynolds and flow types 5.2 The distribution of velocity in viscous flows: the boundary layer 5.3 Turbulent flows 5.4 The structure of turbulent shear flows 5.5 Shear flow instabilities, flow separation and secondary currents 5.6 Subcritical and supercritical flows: the Froude number and hydraulic jumps 5.7 Stratified flow generally 5.8 Water waves 5.9 Tidal flow—long-period waves Further reading Part 3: Transporting Sediment Introduction 6 Sediment in fluid and fluid flow—general 6.1 Fall of grains through stationary fluids 6.2 Natural flows carrying particulate material are complex 6.3 Fluids as transporting machines 6.4 Initiation of grain motion 6.5 Paths of grain motion 6.6 Categories of transported sediment 6.7 Some contrasts between wind and water flows 6.8 Cohesive sediment transport and erosion 6.9 A warning: nonequilibrium effects dominate natural sediment transport systems 6.10 Steady state, deposition or erosion: the sediment continuity equation and competence vs. capacity Further reading 7 Bedforms and sedimentary structures in flows and under waves 7.1 Trinity of interaction: turbulent flow, sediment transport and bedform development 7.2 Water-flow bedforms 7.3 Bedform phase diagrams for water flows 7.4 Water flow erosional bedforms on cohesive beds 7.5 Water wave bedforms 7.6 Combined flows: wave-current ripples and hummocky cross-stratification 7.7 Bedforms and structures formed by atmospheric flows Further reading 8 Sediment gravity flows and their deposits 8.1 Introduction 8.2 Granular flows 8.3 Debris flows 8.4 Turbidity flows 8.5 Turbidite evidence for downslope transformation from turbidity to debris flows Further reading 9 Liquefaction, fluidization and sliding sediment deformation 9.1 Liquefaction 9.2 Sedimentary structures formed by and during liquefaction 9.3 Submarine landslides, growth faults and slumps 9.4 Desiccation and synaeresis shrinkage structures Further reading Part 4: Major External Controls on Sedimentation and Sedimentary Environments Introduction 10 Major external controls on sedimentation 10.1 Climate 10.2 Global climates: a summary 10.3 Sea-level changes 10.4 Tectonics 10.5 Sediment yield, denudation rate and the sedimentary record Further reading Part 5: Continental Sedimentary Environments Introduction 11 Rivers 11.1 Introduction 11.2 River networks, hydrographs,patterns and long profiles 11.3 Channel form 11.4 Channel sediment transport processes, bedforms and internal structures 11.5 The floodplain 11.6 Channel belts, alluvial ridges and avulsion 11.7 River channel changes, adjustable variables and equilibrium 11.8 Alluvial architecture: product of complex responses 11.9 Alluvial architecture: scale, controls and time Further reading 12 Subaerial Fans: Alluvial and Colluvial 12.1 Introduction 12.2 Controls on the size (area) and gradient of fans 12.3 Physical processes on alluvial fans 12.4 Debris-flow-dominated alluvial fans 12.5 Stream-flow-dominated alluvial fans 12.6 Recognition of ancient alluvial fans and talus cones Further reading 13 Aeolian Sediments in Low-Latitude Deserts 13.1 Introduction 13.2 Aeolian system state 13.3 Physical processes and erg formation 13.4 Erg margins and interbedform areas 13.5 Erg and draa evolution and sedimentary architecture 13.6 Erg construction, stasis and destruction: climate and sea-level controls 13.7 Ancient desert facies Further reading 14 Lakes 14.1 Introduction 14.2 Lake stratification 14.3 Clastic input by rivers and the effect of turbidity currents 14.4 Wind-forced physical processes 14.5 Temperate lake chemical processes and cycles 14.6 Saline lake chemical processes and cycles 14.7 Biological processes and cycles 14.8 Modern temperate lakes and their sedimentary facies 14.9 Lakes in the East African rifts 14.10 Lake Baikal 14.11 The succession of facies as lakes evolve 14.12 Ancient lake facies Further reading 15 Ice 15.1 Introduction 15.2 Physical processes of ice flow 15.3 Glacier flow, basal lubrication and surges 15.4 Sediment transport, erosion and deposition by flowing ice 15.5 Glacigenic sediment: nomenclature and classification 15.6 Quaternary and modern glacial environments and facies 15.7 Ice-produced glacigenic erosion and depositional facies on land and in the periglacial realm 15.8 Glaciofluvial processes on land at and within the ice-front 15.9 Glacimarine environments 15.10 Glacilacustrine environments 15.11 Glacial facies in the pre-Quaternary geological record: case of Cenozoic Antarctica Further reading Part 6: Marine Sedimentary Environments Introduction 16. Estuaries 16.1 Introduction 16.2 Estuarine dynamics 16.3 Modern estuarine morphology and sedimentary environments 16.4 Estuaries and sequence stratigraphy Further reading 17. River and Fan Deltas 17.1 Introduction to river deltas 17.2 Basic physical processes and sedimentation at the river delta front 17.3 Mass movements and slope failure on the subaqueous delta 17.4 Organic deposition in river deltas 17.5 River delta case histories 17.6 River deltas and sea-level change 17.7 Ancient river delta deposits 17.8 Fan deltas Further reading 18. Linear Siliciclastic Shorelines 18.1 Introduction 18.2 Beach processes and sedimentation 18.3 Barrier-inlet-spit systems and their deposits 18.4 Tidal flats, salt marsh and chenier ridges 18.5 Ancient clastic shoreline facies Further reading 19 Siliciclastic Shelves 19.1 Introduction: shelf sinks and lowstand bypass 19.2 Shelf water dynamics 19.3 Holocene highstand shelf sediments: general 19.4 Tide-dominated, low river input, highstand shelves 19.5 Tide-dominated, high river input, highstand shelves 19.6 Weather-dominated highstand shelves Further reading 20 Calcium-carbonate-evaporite Shorelines, Shelves and Basins 20.1 Introduction: calcium carbonate 'nurseries' and their consequences 20.2 Arid carbonate tidal flats, lagoons and evaporite sabkhas 20.3 Humid carbonate tidal flats and marshes 20.4 Lagoons and bays 20.5 Tidal delta and margin-spillover carbonate tidal sands 20.6 Open-shelf carbonate ramps 20.7 Platform margin reefs and carbonate build-ups 20.8 Platform margin slopes and basins 20.9 Carbonate sediments, cycles and sea-level change 20.10 Displacement and destruction of carbonate environments: silicicl
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  • 3
    facet.materialart.
    Unknown
    In:  ACM Transactions on Database Systems
    Publication Date: 2024-02-21
    Description: Automatic recycling of intermediate results to improve both query response time and throughput is a grand challenge for state-of-the-art databases. Tuples are loaded and streamed through a tuple-at-a-time processing pipeline, avoiding materialization of intermediates as much as possible. This limits the opportunities for reuse of overlapping computations to DBA-defined materialized views and function/result cache tuning. In contrast, the operator-at-a-time execution paradigm produces fully materialized results in each step of the query plan. To avoid resource contention, these intermediates are evicted as soon as possible. In this article we study an architecture that harvests the byproducts of the operator-at-a-time paradigm in a column-store system using a lightweight mechanism, the recycler. The key challenge then becomes the selection of the policies to admit intermediates to the resource pool, to determine their retention period, and devise the eviction strategy when facing resource limitations. The proposed recycling architecture has been implemented in an open-source system. An experimental analysis against the TPC-H ad-hoc decision support benchmark and a complex, real-world application (SkyServer) demonstrates its effectiveness in terms of self-organizing behavior and its significant performance gains. The results indicate the potentials of recycling intermediates and charts a route for further development of database kernels.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 4
    Publication Date: 2024-02-21
    Description: As network infrastructures with 10 Gb/s bandwidth and beyond have become pervasive and as cost advantages of large commodity-machine clusters continue to increase, research and industry strive to exploit the available processing performance for large-scale database processing tasks. In this work we look at the use of high-speed networks for distributed join processing. We propose Data Roundabout as alight weight transport layer that uses Remote Direct Memory Access (RDMA) to gain access to the throughput opportunities in modern networks. The essence of Data Roundabout is a ring shaped network in which each host stores one portion of a large database instance. We leverage the available bandwidth to (continuously) pump data through the high-speed network. Based on Data Roundabout, we demonstrate cyclo-join, which exploits the cycling flow of data to execute distributed joins. The study uses different join algorithms (hash join and sort-merge join) to expose the pitfalls and the advantages of each algorithm in the data cycling arena. The experiments show the potential of a large distributed main-memory cache glued together with RDMA into a novel distributed database architecture.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 5
    facet.materialart.
    Unknown
    In:  ACM Transactions on Database Systems
    Publication Date: 2024-02-21
    Description: A grand challenge of distributed query processing is to devise a self-organizing architecture which exploits all hardware resources optimally to manage the database hot set, minimize query response time, and maximize throughput without single point global coordination. The Data Cyclotron architecture [Goncalves and Kersten 2010] addresses this challenge using turbulent data movement through a storage ring built from distributed main memory and capitalizing on the functionality offered by modern remote-DMA network facilities. Queries assigned to individual nodes interact with the storage ring by picking up data fragments, which are continuously flowing around, that is, the hot set. The storage ring is steered by the Level Of Interest (LOI) attached to each data fragment, which represents the cumulative query interest as it passes around the ring multiple times. A fragment with LOI below a given threshold, inversely proportional to the ring load, is pulled out to free up resources. This threshold is dynamically adjusted in a fully distributed manner based on ring characteristics and locally observed query behavior. It optimizes resource utilization by keeping the average data access latency low. The approach is illustrated using an extensive and validated simulation study. The results underpin the fragment hot set management robustness in turbulent workload scenarios. A fully functional prototype of the proposed architecture has been implemented using modest extensions to MonetDB and runs within a multirack cluster equipped with Infiniband. Extensive experimentation using both microbenchmarks and high-volume workloads based on TPC-H demonstrates its feasibility. The Data Cyclotron architecture and experiments open a new vista for modern distributed database architectures with a plethora of new research challenges.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 6
    Monograph available for loan
    Monograph available for loan
    Cambridge, Mass. : Belknap Press
    Call number: RIFS 23.95556
    Type of Medium: Monograph available for loan
    Pages: XVI, 622 Seiten , Ill.
    Edition: 1st paperback ed.
    ISBN: 9780674292130
    Uniform Title: Chute du ciel
    Language: English
    Branch Library: RIFS Library
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  • 7
    Monograph available for loan
    Monograph available for loan
    London : Routledge
    Call number: RIFS 23.95609
    Type of Medium: Monograph available for loan
    Pages: xii, 163 Seiten , Illustrationen, Diagramme
    ISBN: 041556722X , 9780415567237 , 9780415567220
    Language: English
    Branch Library: RIFS Library
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  • 8
    Monograph available for loan
    Monograph available for loan
    Edinburgh : Edinburgh University Press
    Call number: RIFS 23.95612
    Type of Medium: Monograph available for loan
    Pages: vii, 256 Seiten
    Edition: Second edition
    ISBN: 9780748691135
    Language: English
    Branch Library: RIFS Library
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  • 9
    Monograph available for loan
    Monograph available for loan
    London [u.a.] : Routledge
    Call number: RIFS 23.95542
    Type of Medium: Monograph available for loan
    Pages: XIV, 203 S. , graph. Darst., Kt. , 24 cm
    Edition: 1. publ.
    ISBN: 0415477506 , 0415477514 , 9780415477505 , 9780415477512
    Language: English
    Branch Library: RIFS Library
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  • 10
    Monograph available for loan
    Monograph available for loan
    Cambridge, Mass. [u.a.] : MIT Press
    Call number: RIFS 23.95560
    Type of Medium: Monograph available for loan
    Pages: XIX, 279 S. , Ill. , 23 cm
    ISBN: 0262515857 , 0262015447 , 9780262515856 , 9780262015448
    Language: English
    Branch Library: RIFS Library
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  • 11
    Call number: RIFS 23.95498
    Description / Table of Contents: The essays in this volume address the displacement of natural and cultural heritage caused by disasters, whether they be dramatic natural impacts or terrible events unleashed by humankind, including holocaust and genocide. Disasters can be natural or human-made, rapid or slow, great or small, yet the impact is effectively the same; nature, people and cultural heritage are displaced or lost. Yet while heritage and place are at risk from disasters, in time,sites of suffering are sometimes reframed as sites of memory; through this different lens these "difficult" places become heritage sites that attract tourists. Ranging widely chronologically and geographically, the contributors explore the impact of disasters, trauma and suffering on heritage and sense of place, in both theory and practice.
    Type of Medium: Monograph available for loan
    Pages: xx, 337 pages , Illustrationen
    Edition: Paperback ed.
    ISBN: 9781843839637 , 9781783274307
    Series Statement: Heritage matters
    Language: English
    Branch Library: RIFS Library
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  • 12
    Call number: 9783034803960 (e-book)
    Type of Medium: 12
    Pages: 1 Online-Ressource (XI, 220 Seiten) , Illustrationen
    ISBN: 9783034803960 (e-book) , 978-3-0348-0396-0
    Language: English
    Note: Contents 1 High elevation treelines 1.1 The task 1.2 Previous works 2 Definitions and conventions 2.1 The life form ‘tree’ 2.2 Lines and transitions 2.3 Limitation, stress and disturbance 2.4 Altitude-related and other environmental drivers 2.5 Treeline nomenclature 3 Treeline patterns 3.1 Treeline taxa 3.2 The summit syndrome and other treeline depressions 3.3 Mass elevation effect 3.4 Treeline elevation 3.5 Time matters 3.6 Forest structure near treeline 4 Treeline climate 4.1 Specific aspects of treeline climatology 4.2 Criteria to define temperature regimes at treeline 4.3 Treeline temperatures in different bioclimatic regions 4.3.1 Subarctic and boreal zone (45–68° N) 4.3.2 Cool temperate zone (45–47° N, 44° S) 4.3.3 Warm temperate zone (28–42° N, 36° S) 4.3.4 Subtropical zone (19° S, 19° N) 4.3.5 Equatorial tropics (6° N to 3° S) 4.3.6 Mediterranean ‘treelines’ (38–42° N) 4.3.7 The Nothofagus and Metrosideros case 4.3.8 Treeline temperatures across bioclimatic zones 4.4 Seedbed and branch temperatures 4.5 Whole forest temperatures 5 Global mountain statistics based on treeline elevation 5.1 Mountain geostatistics 5.2 Elevational belts 5.3 Global treeline ecotones 6 Structure and stature of treeline trees 6.1 Foliage properties 6.2 Wood properties 6.3 Bark properties 6.4 Root traits 6.5 Tree stature 6.6 Dry matter allocation in treeline trees 7 Growth and development 7.1 Tree growth near the treeline 7.1.1 In situ growth of seedlings 7.1.2 In situ growth of saplings and adult trees 7.2 Xylogenesis at the treeline 7.2.1 In situ cambial activity 7.2.2 Apical growth dynamics 7.3 Root growth 7.4 Phenology at the treeline 8 Evolutionary adjustments to life at the treeline 8.1 Phylogenetic selection 8.2 Genotypic responses of growth and development 8.3 Genotypic responses of physiological traits 9 Reproduction, early life stages and tree demography 9.1 Amount and quality of seeds at high elevation 9.2 Germination, seedling and sapling stage 9.3 Tree demography at the treeline 10 Freezing and other forms of stress 10.1 Stress at the treeline in a fitness context 10.2 Mechanisms and principles of freezing resistance 10.3 Freezing resistance in treeline trees 10.4 Other forms of stress at the treeline 10.4.1 Freeze-thaw cycles and hydraulic failure 10.4.2 Winter desiccation 11 Water, nutrient and carbon relations 11.1 Tree water relations during the growing season 11.2 Nutrient relations 11.3 Carbon relations 12 Treeline formation - currently, in the past and in the future 12.1 Causes of current treelines 12.2 Treelines in the recent past 12.3 Treelines in the distant past (Holocene) 12.4 Treelines in the future References Subject Index Taxonomic Index
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  • 13
    Call number: AWI G6-23-95368
    Type of Medium: Monograph available for loan
    Pages: XIX, 1004 Seiten , Illustrationen
    ISBN: 9780891189602 , 978-0-891-18960-2 , 0891189602
    ISSN: 2163-5804 , 1047-4986
    Series Statement: Soil Science Society of America book series 10
    Language: English
    Note: Contents Foreword Preface Contributors Chapter 1 Issues of Sampling Design in Wetlands / Monica Rivas Casado, Ron Corstanje, Pat Bellamy, and Ben Marchant DESIGN-BASED SAMPLING APPROACHES MODEL-BASED SAMPLING APPROACHES Chapter 2 Soil and Sediment Sampling of Inundated Environments / Todd Z. Osborne and R.D. DeLaune SAMPLING IN INUNDATED ENVIRONMENTS: SAMPLING PLAN AND GENERAL CONSIDERATIONS SAMPLING METHODS FOR INUNDATION DEPTHS LESS THAN 1.5 METERS SAMPLING METHODS FOR INUNDATION DEPTHS GREATER THAN 1.5 METERS SPECIAL CONDITIONS OR CONSIDERATIONS Chapter 3 Physicochemical Characterization of Wetland Soils / K.R. Reddy, M.W. Clark, R.D. DeLaune, and M. Kongchum SOIL SAMPLING PHYSICOCHEMICAL PROPERTIES CONCLUSIONS Chapter 4 Soil Pore Water Sampling Methods / M.M. Fisher and K.R. Reddy TECHNIQUES FOR SAMPLING SOIL PORE WATER SAMPLE HANDLING CONSIDERATIONS SAMPLING PORE WATER GASES SUMMARY Chapter 5 Reduction–Oxidation Potential and Oxygen / J. Patrick Megonigal and Martin Rabenhorst REDOX POTENTIAL THEORY OXYGEN MEASUREMENT WITH DIFFUSION CHAMBERS REDOX MEASUREMENT Chapter 6 Determination of Dissolved Oxygen, Hydrogen Sulfide, Iron(II), and Manganese(II) in Wetland Pore Waters / George W. Luther III and Andrew S. Madison EXPERIMENTAL PRINCIPLES OF ELECTRODE FABRICATION EXPERIMENTAL PRINCIPLES OF WORKING ELECTRODE CALIBRATIONS PROCEDURES FOR MICROPROFILING SUMMARY Chapter 7 Soil Redox Potential and pH Controllers / Kewei Yu and Jörg Rinklebe REDOX POTENTIAL AND pH CONTROL MODIFICATIONS AN AUTOMATED BIOGEOCHEMICAL MICROCOSM SYSTEM APPLICATIONS Chapter 8 Morphological Methods to Characterize Hydric Soils / M.J. Vepraskas EQUIPMENT METHODS AND TECHNIQUES FOR DESCRIBING HYDRIC SOILS FIELD TEST TO ASSESS SOIL MATERIAL TYPE IDENTIFYING HYDRIC SOIL FIELD INDICATORS Chapter 9 Emergent Macrophyte Biomass Production / Christopher Craft SAMPLING CONSIDERATIONS INDIRECT METHODS DIRECT METHODS EMERGING METHODS Chapter 10 Photosynthetic Measurements in Wetlands / S.R. Pezeshki OXYGEN EXCHANGE MEASUREMENT TECHNIQUE CARBON ISOTOPE TECHNIQUE MICROMETEOROLOGICAL TECHNIQUE CHLOROPHYLL FLUORESCENCE METHOD PHOTOSYNTHETIC MEASUREMENTS USING CHAMBERS SUMMARY Chapter 11 Gas Transport and Exchange through Wetland Plant Aerenchyma / Brian K. Sorrell and Hans Brix GENERAL PRINCIPLES EXPERIMENTAL PRINCIPLES LABORATORY AND GLASSHOUSE CHAMBERS MODELING APPROACHES Chapter 12 A Primer on Sampling Plant Communities in Wetlands / Curtis J. Richardson and Ryan S. King OVERVIEW OF SAMPLING PLANT POPULATIONS AND COMMUNITIES SAMPLE SIZE PLANT SAMPLING APPROACHES RAPID ASSESSMENT APPROACHES TO ESTIMATE PLANT ABUNDANCE AND COVER PERCENTAGE PLANT SAMPLING METHODS AND CALCULATION PROCEDURES ANALYSIS OF DATA COMPARISON OF PLANT COMMUNITIES SUGGESTIONS FOR DEVELOPING A PLANT SAMPLING PROGRAM APPENDIX Chapter 13 Plant Productivity—Bottomland Hardwood Forests / William H. Conner and Julia A. Cherry ABOVEGROUND PRODUCTIVITY BELOWGROUND PRODUCTIVITY Chapter 14 Current Methods to Evaluate Net Primary Production and Carbon Budgets in Mangrove Forests / Victor H. Rivera-Monroy, Edward Castañeda-Moya, Jordan G. Barr, Vic Engel, Jose D. Fuentes, Tiffany G. Troxler, Robert R. Twilley, Steven Bouillon, Thomas J. Smith III, and Thomas L. O’Halloran CURRENT METHODS TO ESTIMATE NET PRIMARY PRODUCTIVITY COMPARING MANGROVE NET PRIMARY PRODUCTION ESTIMATES TO WHOLE-FOREST CARBON FLUX MEASUREMENTS SUMMARY AND FUTURE RESEARCH DIRECTIONS APPENDIX Chapter 15 Characterization of Wetland Soil Organic Matter / Robert L. Cook and Thomas S. Bianchi SAMPLE TREATMENT AND PROCESSING SPECTROSCOPIC CHARACTERIZATION BULK ELEMENTAL AND CHEMICAL BIOMARKER ANALYSES SUMMARY Chapter 16 Dissolved Organic Matter / Robert G. Qualls EQUIPMENT AND INSTRUMENTATION MATERIALS AND REAGENTS SAMPLE PREPARATION PROCEDURES CONCLUSIONS Chapter 17 Soil Microbial Biomass and Phospholipid Fatty Acids / Jörg Rinklebe and Uwe Langer THE SUBSTRATE-INDUCED RESPIRATION METHOD PHOSPHOLIPID FATTY ACIDS ESTIMATES OF MICROBIAL BIOMASS SUMMARY Chapter 18 Molecular Genetic Analysis of Wetland Soils / Hee-Sung Bae and Andrew V. Ogram DNA EXTRACTION QUANTITATIVE POLYMERASE CHAIN REACTION POLYMERASE CHAIN REACTION BASED MOLECULAR CLONING Chapter 19 Enzyme Activities / Hojeong Kang, Seon-Young Kim, and Chris Freeman EQUIPMENT AND INSTRUMENTATION MATERIALS AND REAGENTS SAMPLE PREPARATION PROCEDURE CALCULATION SUMMARY Chapter 20 Organic Matter Mineralization and Decomposition / Scott D. Bridgham and Rongzhong Ye LITTER DECOMPOSITION DECOMPOSITION OF STANDARD SUBSTRATES SOIL HETEROTROPHIC RESPIRATION PHOTODEGRADATION Chapter 21 Methanogenesis and Methane Oxidation in Wetland Soils / Kanika S. Inglett, Jeffery P. Chanton, and Patrick W. Inglett EXPERIMENTAL METHANE MEASUREMENTS ISOTOPIC MEASUREMENTS OF METHANE Chapter 22 Greenhouse Gas Emission by Static Chamber and Eddy Flux Methods / Kewei Yu, April Hiscox, and R.D. DeLaune STATIC CHAMBER MEASUREMENT EDDY COVARIANCE MEASUREMENT SUMMARY Chapter 23 Characterization of Organic Nitrogen in Wetlands / C.M. VanZomeren, H. Knicker, W.T. Cooper, and K.R. Reddy CHEMICAL FRACTIONATION OF SOIL ORGANIC NITROGEN CHLOROFORM FUMIGATION METHOD NUCLEAR RESONANCE SPECTROSCOPY MASS SPECTROMETRY OF ORGANIC NITROGEN CONCLUSIONS Chapter 24 Measurements of Nitrogen Mineralization Potential in Wetland Soils / Eric D. Roy and John R. White POTENTIALLY MINERALIZABLE NITROGEN SUBSTRATE-INDUCED NITROGEN MINERALIZATION LIMITATIONS SUMMARY Chapter 25 Wind Tunnel Method for Measurement of Ammonia Volatilization / M.E. Poach, K.S. Ro, and P.G. Hunt EQUIPMENT AND INSTRUMENTATION MATERIALS AND REAGENTS SAMPLE PREPARATION PROCEDURE SAMPLE ANALYSIS CALCULATION STATISTICAL ANALYSIS QUALITY ASSURANCE SUMMARY Chapter 26 Ammonium Oxidation in Wetland Soils / K.S. Inglett, A.V. Ogram, and K.R. Reddy AEROBIC AMMONIUM OXIDATION (NITRIFICATION) ANAEROBIC AMMONIUM OXIDATION (ANAMMOX) METHODS FOR ASSESSING AEROBIC AMMONIUM OXIDATION (NITRIFICATION) METHODS FOR ASSESSING ANAEROBIC AMMONIUM OXIDATION (ANAMMOX) POTENTIAL MOLECULAR METHODS FOR ASSESSING AMMONIUM OXDIATION IN WETLAND SOILS SUMMARY Chapter 27 Denitrification Measurement Using Membrane Inlet Mass Spectrometry / Patrick W. Inglett, Todd M. Kana, and Soonmo An GENERAL PRINCIPLES EXPERIMENTAL PRINCIPLES ISOTOPE PAIRING BY THE MIMS METHOD SUMMARY Chapter 28 Nitrate Reduction, Denitrification, and Dissimilatory Nitrate Reduction to Ammonium in Wetland Sediments / Amy J. Burgin, Stephen K. Hamilton, Wayne S. Gardner, and Mark J. McCarthy EQUIPMENT AND INSTRUMENTATION MATERIALS AND REAGENTS PROCEDURES SAMPLE PREPARATION CALCULATIONS Chapter 29 System-Level Denitrification Measurement Based on Dissolved Gas Equilibration Theory and Membrane Inlet Mass Spectrometry / Andrew Laursen and Patrick W. Inglett GENERAL THEORY EXPERIMENTAL PRINCIPLES CALCULATIONS DISCUSSION AND LIMITATIONS SUMMARY Chapter 30 Biogeochemical Nitrogen Cycling in Wetland Ecosystems: Nitrogen-15 Isotope Techniques / Dries Huygens, Mark Trimmer, Tobias Rütting, Christoph Müller, Catherine M. Heppell, Katrina Lansdown, and Pascal Boeckx EXPERIMENTAL STUDY SETUPS ISOTOPE PAIRING AND REVISED ISOTOPE PAIRING TECHNIQUES ISOTOPE DILUTION AND TRACING TECHNIQUES Chapter 31 Biological Dinitrogen Fixation / Patrick W. Inglett ACETYLENE REDUCTION DINITROGEN-15 INCORPORATION SUMMARY Chapter 32 Methods for Soil Phosphorus Characterization and Analysis of Wetland Soils / Curtis J. Richardson and K.R. Reddy TERMINOLOGY, OPERATIONAL DEFINITIONS, AND COMPARISON OF PHOSPHORUS FORMS SAMPLE PREPARATION AND STORAGE SOIL PHOSPHORUS ANALYSIS PHOSPHORUS AVAILABILITY INDICES ANION EXCHANGE RESIN AND IRON OXIDE PAPER SOIL INORGANIC PHOSPHORUS FORMS GENERAL COMMENTS Chapter 33 Phosphorus Characterization in Wetland Soils by Solution Phosphorus-31 Nuclear Magnetic Resonance Spectroscopy / Alexander W. Cheesman, James Rocca, and Benjamin L. Turner BRIEF OVERVIEW OF THE PRINCIPLES APPLICATION TO WETLAND SOILS Chapter 34 Phosphorus Sorption and Desorption
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  • 14
    Call number: 4/M 23.95439
    In: Frontiers in earth sciences
    Description / Table of Contents: This book will constitute the proceedings of the ILP Workshop held in Abu Dhabi in December 2009. It will include a reprint of the 11 papers published in the December 2010 issue of the AJGS, together with 11 other original papers.
    Type of Medium: Monograph available for loan
    Pages: xx, 474 Seiten , Illustrationen, Karten
    ISBN: 9783642292781 , 978-3-642-29278-1
    ISSN: 1863-4621
    Series Statement: Frontiers in earth sciences
    Language: English
    Note: Contents Part I The Emirati Foreland and Foothills 1 Structural and stratigraphic evolution of Abu Dhabi in the context of Arabia / Ken W. Glennie 2 Architecture of the Oman–UAE ophiolite: evidence for a multi-phase magmatic history / K. M. Goodenough, M. T. Styles, D. Schofield, R. J. Thomas, Q. C. Crowley, R. M. Lilly, J. McKervey, D. Stephenson and J. N. Carney 3 New constrains on the thickness of the Semail ophiolite in the Northern Emirates / Charles Naville, Martine Ancel, Paul Andriessen, Patrice Ricarte and François Roure 4 The Jurassic–Cretaceous depositional and tectonic evolution of the southernwestern margin of the Neotethys Ocean, Northern Oman and United Arab Emirates / Emrys R. Phillips, Colin N. Waters and Richard A. Ellison 5 Forced folding of the neoautochthonous Late Cretaceous–Early Tertiary sequence at the western end of the Hatta Zone, Northern Oman Mountains / Mohammed Warrak 6 Seismic stratigraphy and subsidence history of the United Arab Emirates (UAE) rifted margin and overlying foreland basins / M. Y. Ali, A. B. Watts and M. P. Searle 7 Depth seismic imaging using reflection and first arrival traveltime tomography: Application to a deep profile across the Northern Emirates Foothills / Anne Jardin, Karine Broto and Timothée Perdrizet 8 Forward kinematic modelling of a regional transect in the Northern Emirates using geological and apatite fission track age constraints on paleo-burial history / Mihai Tarapoanca, Paul Andriessen, Karine Broto, Louis Chérel, Nadine Ellouz-Zimmermann, Jean-Luc Faure, Anne Jardin, Charles Naville and François Roure 9 Paleo-fluids characterisation and fluid flow modelling along a regional transect in Northern United Arab Emirates (UAE) / Jean-Paul Callot, Liesbeth Breesch, Nicole Guilhaumou, François Roure, Rudy Swennen and Nadège Vilasi 10 Diagenesis of the Khuff Formation (Permian–Triassic), northern United Arab Emirates / Simone Fontana, Fadi H. Nader, Sadoon Morad, Andrea Ceriani and Ihsan S. Al-Aasm Part II The Zagros and Makran tectonic wedges 11 Evidence for mantle exhumation along the Arabian margin in the Zagros (Kermanshah area, Iran) / Jean-Christophe Wrobel-Daveau, Jean-Claude Ringenbach, Saeid Tavakoli, Geoffrey M. H. Ruiz, Pierre Masse and Dominique Frizon de Lamotte 12 Structural style of the Makran Tertiary accretionary complex in SE-Iran / J.-P. Burg, A. Dolati, D. Bernoulli and J. Smit 13 Preliminary fault analysis and paleostress evolution in the Makran Fold-and-Thrust Belt in Iran / A. Dolati and J.-P Burg Part III Seismic hazards in Saudi Arabia and adjacent Parts of the Arabian Plate 14 Improvement of seismicity parameters in the Arabian Shield and Platform Using earthquake location and magnitude calibration / A. M. Al-Amri and A. J. Rodgers 15 Seismotectonics and seismogenic source zones of the Arabian Platform / Abdullah M. Al-Amri 16 Seismic zones regionalization and hazard assessment of SW Arabian Shield and Southern Red Sea Region / M. A. Al-Malki and A. M. Al-Amri Part IV Yemen margins and the Gulf of Aden 17 The Cryogenian Arc formation and successive High-K calc-alkaline plutons of Socotra Island (Yemen) / Y. Denèle, S. Leroy, E. Pelleter, R. Pik, J-Y Talbot and K. Khanbarri 18 Sedimentary basins of Yemen: their tectonic development and lithostratigraphic cover / Mustafa Abdullatif As-Saruri, Rasoul Sorkhabi and Rasheed Baraba 19 Paleostress analysis of the volcanic margins of Yemen / Khaled Khanbari and Philippe Huchon 20 From rifting to oceanic spreading in the Gulf of Aden: A synthesis / Sylvie Leroy, Philippe Razin, Julia Autin, François Bache, Elia d’Acremont, Louise Watremez, Jérémy Robinet, Céline Baurion, Yoann Denèle, Nicolas Bellahsen, Francis Lucazeau, Frédérique Rolandone, Stéphane Rouzo, Josep Serra Kiel, Cécile Robin, François Guillocheau, Christel Tiberi, Clémence Basuyau, Marie-Odile Beslier, Cynthia Ebinger, Graham Stuart, Abdulhakim Ahmed, Khaled Khanbari, Ismaël Al-Ganad, Philippe de Clarens, Patrick Unternehr, Khalfan Al-Toubi and Ali Al-Lazki 21 Upper mantle anisotropy of Southeast Arabia passive margin [Gulf of Aden Northern conjugate margin], Oman / Ali Al-Lazki, Cindy Ebinger, Michael Kendall, George Helffrich, Sylvie Leroy, Christel Tiberi, Graham Stuart and Khalfan Al-Toobi Part V Geodynamic Modelling 22 Samovar: a thermomechanical code for modeling of geodynamic processes in the lithosphere—application to basin evolution / Yuriy Elesin, Taras Gerya, Irina M. Artemieva and Hans Thybo Biographies Index
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  • 15
    Monograph available for loan
    Monograph available for loan
    Sankt-Peterburg : Sankt-Peterburgskij Gosudarstvennyj Universitet
    Call number: AWI Bio-13-0030
    Description / Table of Contents: Atlas contains photographic images of 91 plant species and pollen which are found in Lena River Delta as well as information about current conditions of their growth. This is a major advantage of this atlas as compared to other publications of this kind. All information is presented in Russian and English. All materials were collected in framework of the Russian-German expeditions "Lena-2009", "Lena-2010", "Lena-2011" and "Lena-2012". Photographs illustrate the general view of the plant, inflorescence and pollen grains in different positions and from high to low focus. Plants are grouped into families, where each family has its own color. Atlas is addressed not only to specialists in palynology, but to all who are interested in the flora and vegetation of the Arctic region, including students of geographical, biological and environmental fields.
    Type of Medium: Monograph available for loan
    Pages: 111 Seiten , Illustrationen
    ISBN: 9785439100361
    Language: Russian , English
    Note: Contents: Introduction. - Apiaceae. - Asteraceae. - Betulaceae. - Boraginaceae. - Brassicaceae. - Campanulaceae. - Caryophyllaceae. - Crassulaceae. - Cyperaceae. - Diapensiaceae. - Ericaceae. - Fabaceae. - Gentianaceae. - Hippuriadaceae. - Juncaceae. - Lentibulariaceae. - Liliaceae. - Onagraceae. - Papaveraceae. - Parnassiaceae. - Pinaceae. - Plumbaginaceae. - Poaceae. - Polemoniaceae. - Polygonaceae. - Portulacaceae. - Primulaceae. - Pyrolaceae. - Ranunculaceae. - Rosaceae. - Salicaceae. - Saxifragaceae. - Scrophulariaceae. - Valerianaceae. - Index of plants by family. - Alphabetical index of plants. , In englischer und russischer Sprache. , Teilw. in kyrillischer Schrift
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  • 16
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge University Press
    Call number: AWI A4-11-0035
    Description / Table of Contents: The polar regions have experienced some remarkable environmental changes in recent decades, such as the Antarctic ozone hole, the loss of large amounts of sea ice from the Arctic Ocean and major warming on the Antarctic Peninsula. The polar regions are also predicted to warm more than any other region on Earth over the next century if greenhouse gas concentrations continue to rise. Yet trying to separate natural climate variability from anthropogenic forcing still presents many problems. This book presents a thorough review of how the polar climates have changed over the last million years and sets recent changes within a long term perspective, as determined from ice and ocean sediment cores. The approach taken is highly cross-disciplinary and the close links between the atmosphere, ocean and ice at high latitudes are stressed. The volume will be invaluable for researchers and advanced students in polar science, climatology, global change, meteorology, oceanography and glaciology.
    Type of Medium: Monograph available for loan
    Pages: xii, 434 Seiten , Illustrationen
    Edition: First published
    ISBN: 9780521850100 , 978-0-521-85010-0
    Language: English
    Note: Contents: Preface. - 1. Introduction. - 1.1 The environment of the polar regions. - 1.2 The role of the polar regions in the global climate system. - 1.3 Possible implications of high latitude climate change. - 2. Polar climate data and models. - 2.1 Introduction. - 2.2 Instrumental observations. - 2.3 Meteorological analysis fields. - 2.4 Remotely sensed data. - 2.5 Proxy climate data. - 2.6 Models. - 3. The high latitude climates and mechanisms of change. - 3.1 Introduction. - 3.2 Factors influencing the broadscale climated of the polar regions. - 3.3 Processes of the high latitude climates. - 3.4 The mechanisms of high latitude climate change. - 3.5 Atmospheric circulation. - 3.6 Temperature. - 3.7 Cloud and precipitation. - 3.8 Sea ice. - 3.9 The ocean circulation. - 3.10 Concluding remarks. - 4. The last million years. - 4.1 Introduction. - 4.2 The Arctic. - 4.3 The Antarctic. - 4.4 Linking high latitude climate change in the two hemispheres. - 5. The Holocene. - 5.1 Introduction. - 5.2 Forcing of the climate system during the Holocene. - 5.3 Atmospheric circulation. - 5.4 Temperature. - 5.5 The ocean circulation. - 5.6 Sea ice and sea surface temperatures. - 5.7 Atmospheric gases and aerosols. - 5.8 The cryosphere, precipitation and sea level. - 5.9 Concluding remarks. - 6. The instrumental period. - 6.1 Introduction. - 6.2 The main meteorological elements. - 6.3 Changes in the atmospheric circulation. - 6.4 The ocean environment. - 6.5 Sea ice. - 6.6. Snow cover. - 6.7 Permafrost. - 6.8 Atmospheric gases and aerosols. - 6.9 Terrestrial ice and sea level. - 6.10 Attribution of recent changes. - 6.11 Concluding remarks. - 7. Predictions for the next 100 years. - 7.1 Introduction. - 7.2 Possible future greenhouse gas emission scenarios and the IPCC models. - 7.3 Changes in the atmospheric circulation and the modes of climate variability. - 7.4 The main meteorological elements. - 7.5 The ocean circulation and water masses. - 7.6 Sea ice. - 7.7 Seasonal snow cover and the terrestrial environment. - 7.8 Permafrost. - 7.9 Atmospheric gases and aerosols. - 7.10 Terrestrial ice, the ice shelves and sea level. - 7.11 Concluding remarks. - 8. Summary and future research needs. - 8.1 Introduction. - 8.2 Gaining improved understanding of past climate change. - 8.3 Modelling the high latitude climate system. - 8.4 Data required. - 8.5 Concluding remarks. - References. - Index.
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    Publication Date: 2023-07-18
    Language: English
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    Springer
    Publication Date: 2023-07-18
    Description: ‘Transgovernance: Advancing Sustainability Governance’ analyses what implications recent and ongoing changes in the relations between politics, science and media – together characterized as the emergence of a knowledge democracy – may have for governance for sustainable development, on global and other levels of societal decision making, and vice versa: How can the discussion on sustainable development contribute to a knowledge democracy? How can concepts such as second modernity, reflexivity, configuration theory, (meta)governance theory and cultural theory contribute to a ‘transgovernance’ approach which goes beyond mainstream sustainability governance? This volume presents contributions from various angles: international relations, governance and metagovernance theory, (environmental) economics and innovation science. It offers challenging insights regarding institutions and transformation processes, and into the paradigms behind contemporary sustainability governance. This book gives the sustainability governance debate a new context. It transforms classical questions into new options for societal decision making and identifies starting points and strategies aimed at effective governance of transitions to sustainability.
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  • 19
    Publication Date: 2023-07-18
    Description: The concept of boundary work has been put forward as an analytical approach towards the study of interactions between science and policy. While the concept has been useful as a case-study approach, there are several weaknesses and constraints when using the concept in a more systemic analysis of the interactions between knowledge production and sustainable development decision-making at the international level, such as its inability to capture the diversity of institutions involved in such boundary work. Another inability involves a lack of conceptualisation of the impacts of the specific conditions of intergovernmental decision-making, such as rules for representation and the mode of negotiation. This chapter suggests complementing the concept of boundary work with a configuration approach based on a two-dimensional conceptualisation of the boundary space in international decision-making that allows the positioning of institutions with regard to their degree of politicisation and their position in terms of national and regional representation. Such an approach could be a useful guide in the further conceptualisation and application of the boundary concept.
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  • 20
    Publication Date: 2023-07-18
    Description: Hydrothermal carbonization (HTC) is an aqueous-phase route to produce carbon materials using biomass or biomass-derived precursors. In this paper, a comprehensive physicochemical and textural characterization of HTC materials obtained using four different precursors, namely, xylose, glucose, sucrose, and starch, is presented. The development of porosity in the prepared HTC materials as a function of thermal treatment (under an inert atmosphere) was specifically monitored using N2 and CO2 sorption analysis. The events taking place during the thermal treatment process were studied by a combined thermogravimetric/infrared (TGA-IR) measurement. Interestingly, these inexpensive biomass-derived carbon materials show good selectivity for CO2 adsorption over N2 (CO2/N2 selectivity of 20 at 273 K, 1 bar and 1:1 gas composition). Furthermore, the elemental composition, morphologies, degree of structural order, surface charge, and functional groups are also investigated.
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  • 21
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    In:  Soils of Urban, Industrial, Traffic, Mining and Military Areas. SUITMA 7. Abstracts
    Publication Date: 2023-07-18
    Description: The recognition of soils and their functions by the public and, in particular, the planning community isgenerally poor. However, conversion of soils to urban uses is occurring at an unprecedented rate dueto an increasing share of the population living in urban areas and changing lifestyles. Urban planners,developers and planning agencies allocate urban lands to varying uses but land use decisions aregenerally not based on soil information as urban growth is managed predominantly for economicdevelopment. However, urban areas must also deal with challenges such as demographic change,urban densification, climate change and infrastructure provision. Thus, managing urban sustainabilityhas to include ecological aside economic, cultural, and political dimensions. Urban developmentneeds to be managed to minimize negative impacts and maximize environmental quality. Policydecisions towards maximizing short-term economic benefits must be balanced by decisions towardssustainable use and management of urban soils as urban land use has long-term consequences. Therecognition of soils by the planning community can particularly be improved by highlighting the valueof urban soil functions for the well-being of urban dwellers. This approach was recommended at thedialogue session ’Urbanization: Challenges to Soil Management‘ during the first Global Soil Week2012 in Berlin, Germany. Further suggestions how to raise the awareness about urban soils and howto deal with challenges regarding their management will be presented.
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  • 22
    Publication Date: 2023-07-18
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  • 23
    Publication Date: 2023-07-18
    Description: Temporal and spatial patterns in eastern North Atlantic sea-surface temperatures (SST) were reconstructed for marine isotope stage (MIS) 11c using a submeridional transect of five sediment cores. The SST reconstructions are based on planktic foraminiferal abundances and alkenone indices, and are supported by benthic and planktic stable isotope measurements, as well as by ice-rafted debris content in polar and middle latitudes. Additionally, the larger-scale dynamics of the precipitation regime over northern Africa and the western Mediterranean region was evaluated from iron concentrations in marine sediments off NW Africa and planktic δ 13C in combination with analysis of planktic foraminiferal abundances down to the species level in the Mediterranean Sea. Compared to the modern situation, it is revealed that during entire MIS 11c sensu stricto (ss), i.e., between 420 and 398ka according to our age models, a cold SST anomaly in the Nordic seas co-existed with a warm SST anomaly in the middle latitudes and the subtropics, resulting in steeper meridional SST gradients than during the Holocene. Such a SST pattern correlates well with a prevalence of a negative mode of the modern North Atlantic Oscillation. We suggest that our scenario might partly explain the longer duration of wet conditions in the northern Africa during MIS 11c compared to the Holocene.
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  • 24
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    In:  The Roads From Rio: Lessons Learned from Twenty Years of Multilateral Environmental Negotiations
    Publication Date: 2023-07-18
    Language: English
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  • 25
    Publication Date: 2023-07-18
    Description: The dynamics of the 18O(3P) + 32O2 isotope exchange reaction were studied using crossed atomic and molecular beams at collision energies (Ecoll) of 5.7 and 7.3 kcal/mol, and experimental results were compared with quantum statistical (QS) and quasi-classical trajectory (QCT) calculations on the O3(X1A’) potential energy surface (PES) of Babikov et al. [D. Babikov, B. K. Kendrick, R. B. Walker, R. T. Pack, P. Fleurat-Lesard, and R. Schinke, J. Chem. Phys.118, 6298 (2003)]. In both QS and QCT calculations, agreement with experiment was markedly improved by performing calculations with the experimental distribution of collision energies instead of fixed at the average collision energy. At both collision energies, the scattering displayed a forward bias, with a smaller bias at the lower Ecoll. Comparisons with the QS calculations suggest that 34O2 is produced with a non-statistical rovibrational distribution that is hotter than predicted, and the discrepancy is larger at the lower Ecoll. If this underprediction of rovibrational excitation by the QS method is not due to PES errors and/or to non-adiabatic effects not included in the calculations, then this collision energy dependence is opposite to what might be expected based on collision complex lifetime arguments and opposite to that measured for the forward bias. While the QCT calculations captured the experimental product vibrational energy distribution better than the QS method, the QCT results underpredicted rotationally excited products, overpredicted forward-bias and predicted a trend in the strength of forward-bias with collision energy opposite to that measured, indicating that it does not completely capture the dynamic behavior measured in the experiment. Thus, these results further underscore the need for improvement in theoretical treatments of dynamics on the O3(X1A’) PES and perhaps of the PES itself in order to better understand and predict non-statistical effects in this reaction and in the formation of ozone (in which the intermediate O3 * complex is collisionally stabilized by a third body). The scattering data presented here at two different collision energies provide important benchmarks to guide these improvements.
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  • 26
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    In:  Recarbonization of the biosphere : ecosystems and the global carbon cycle
    Publication Date: 2023-07-18
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  • 27
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    In:  The Asahi Shimbun AJW, January 27, 2013
    Publication Date: 2023-07-18
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  • 28
    Publication Date: 2023-07-18
    Description: Institutions for biodiversity governance are located at the interface of human and ecological systems. The analysis of such institutions is challenged due to addressing a multitude of complex interactions between these two systems occurring at different natural scales and levels of human organization. Due to this complexity, empirical analysis of biodiversity management often leads to context-specific explanations, providing little scope for comparative work or the development of more generalised, theory-based accounts. We aim at reducing complexity in understanding human-biodiversity relations, making cases comparable across sites, and propose that, in order to address complexity, we need a method of abstraction that leads to the development of a more structured analysis, based on selection of explanatory factors according to cconceptual models as well as empirical significance. We suggest that the stylisation of typical "resource use-perspectives" - the combination of typical transactions that are inextricably linked by the interest of the actor - can be a useful method for realizing appropriate model selection. In this paper, we provide an account of how use-perspectives can be developed and to what kind of analysis they can contribute, using the example of agrobiodiversity in grain as seed, food, or genetic material.
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  • 29
    Publication Date: 2023-07-18
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    In:  Recarbonization of the biosphere : ecosystems and the global carbon cycle
    Publication Date: 2023-07-18
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  • 31
    Publication Date: 2023-07-18
    Description: Abstract. It has been claimed for more than a century that atmospheric new particle formation is primarily influenced by the presence of sulfuric acid. However, the activation process of sulfuric acid related clusters into detectable particles is still an unresolved topic. In this study we focus on the PARADE campaign measurements conducted during August/September 2011 at Mt Kleiner Feldberg in central Germany. During this campaign a set of radicals, organic and inorganic compounds and oxidants and aerosol properties were measured or calculated. We compared a range of organic and inorganic nucleation theories, evaluating their ability to simulate measured particle formation rates at 3 nm in diameter (J3) for a variety of different conditions. Nucleation mechanisms involving only sulfuric acid tentatively captured the observed noon-time daily maximum in J3, but displayed an increasing difference to J3 measurements during the rest of the diurnal cycle. Including large organic radicals, i.e. organic peroxy radicals (RO2) deriving from monoterpenes and their oxidation products, in the nucleation mechanism improved the correlation between observed and simulated J3. This supports a recently proposed empirical relationship for new particle formation that has been used in global models. However, the best match between theory and measurements for the site of interest was found for an activation process based on large organic peroxy radicals and stabilised Criegee intermediates (sCI). This novel laboratory-derived algorithm simulated the daily pattern and intensity of J3 observed in the ambient data. In this algorithm organic derived radicals are involved in activation and growth and link the formation rate of smallest aerosol particles with OH during daytime and NO3 during night-time. Because the RO2 lifetime is controlled by HO2 and NO we conclude that peroxy radicals and NO seem to play an important role for ambient radical chemistry not only with respect to oxidation capacity but also for the activation process of new particle formation. This is supposed to have significant impact of atmospheric radical species on aerosol chemistry and should be taken into account when studying the impact of new particles in climate feedback cycles.
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  • 32
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    In:  Recarbonization of the biosphere : ecosystems and the global carbon cycle
    Publication Date: 2023-07-18
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  • 33
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    In:  Journal of plant nutrition and soil science
    Publication Date: 2023-07-18
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  • 34
    Publication Date: 2023-07-18
    Description: Variations in the poleward-directed Atlantic heat transfer was investigated over the past 135ka with special emphasis on the last and present interglacial climate development (Eemian and Holocene). Both interglacials exhibited very similar climatic oscillations during each preceding glacial terminations (deglacial TI and TII). Like TI, also TII has pronounced cold-warm-cold changes akin to events such as H1, Blling/Allerd, and the Younger Dryas. But unlike TI, the cold events in TII were associated with intermittent southerly invasions of an Atlantic faunal component which underscores quite a different water mass evolution in the Nordic Seas. Within the Eemian interglaciation proper, peak warming intervals were antiphased between the Nordic Seas and North Atlantic. Moreover, inferred temperatures for the Nordic Seas were generally colder in the Eemian than in the Holocene, and vice versa for the North Atlantic. A reduced intensity of Atlantic Ocean heat transfer to the Arctic therefore characterized the Eemian, requiring a reassessment of the actual role of the ocean-atmosphere system behind interglacial, but also, glacial climate changes.
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  • 35
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    In:  IASS Fact Sheet
    Publication Date: 2023-07-18
    Description: The use of fossil hydrocarbons in the energy and transport sectors is a major source of greenhouse gas emissions. It also ties our society to ever dwindling reserves. Synthetic fuels could play a crucial role in establishing a carbon neutral energy supply.
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  • 36
    Publication Date: 2023-07-18
    Description: The energy demand of the world is foreseen to be increased due to the improvements on the living standard of the developing countries and the development of the global economy. The increase in sustainability of the energy supply must be considered as a must to avoid spoiling natural resources for the next human generations and more dramatic effects such as the so-called global atmospheric warming. The utilization of CO2-free energy sources, as in the case of renewables, is one of the most promising ways to attain such objectives. Nevertheless, the massive energy production with such energy sources are far from being practically feasible in the short-medium term and an innovative solution should be put into practice for the CO2-free exploitation of the huge fossil fuel resources already available. This general assumption is also applicable to any energy carrier such as Hydrogen or electricity. In this case, an analysis is done of the Hydrogen production processes and the discussion of the need to develop a CO2-free production scheme like methane cracking is shown.
    Language: English
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  • 37
    Publication Date: 2023-07-18
    Description: Large point sources such as major population centers (MPCs) emit pollutants which can be deposited nearby or transported over long distances before deposition. We have used tracer simulations of aerosols emitted from MPCs worldwide to assess the fractions which are deposited at various distances away from their source location. Considering only source location, prevailing meteorology, and the aerosol size and solubility, we show that fine aerosol particles have a high potential to pollute remote regions. About half of the emitted mass of aerosol tracers with an ambient diameter ≤1.0 μm is typically deposited in regions more than 1000 km away from the source. Furthermore, using the Köppen-Geiger climate classification to categorize the sources into various climate classes we find substantial differences in the deposition potential between these classes. Tracers originating in arid regions show the largest remote deposition potentials, with values more than doubled compared to the smallest potentials from tracers in tropical regions. Seasonal changes in atmospheric conditions lead to variations in the remote deposition potentials. On average the remote deposition potentials in summer correspond to about 70-80% of the values in winter, with a large spread among the climate classes. For tracers from tropical regions the summer remote deposition values are only about 31% of the winter values, while they are about 95% for tracers from arid regions.
    Language: English
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  • 38
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    In:  IASS Blog, 17.11.2014
    Publication Date: 2023-07-18
    Description: In the basement, in an alcove that's almost a small room, stands a small wood stove. If it weren't on a pedestal, it would barely be a metre high; but even so it's small, almost cute. The wood from which it's made appears to be untreated; its whiteness is rustic, quaint, innocent. It takes a minute to realise what's wrong. A 'wood stove' should be a stove for burning wood - not one made of wood. It should make combustion possible without itself being combustible.
    Language: English
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  • 39
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    In:  Transgovernance: advancing sustainability governance
    Publication Date: 2023-07-18
    Description: Sustainable development is all over the place. The concept is broad and vague. The vagueness of the concept has a Janus face. It has been called a unifying concept because its vagueness breeds a consensus that might be utilised later on. Vagueness is an asset if it triggers action. On the other hand, if sustainable development is everything, maybe it is nothing… Although – or maybe because – the concept is vague, it has overwhelming appeal on political agendas, programmes and dialogues. The precautionary principle is the nucleus of a powerful moral imperative. The multidimensional nature of the concept, covering ecological, economic and social aspects of change relates to our needs for integration. Sustainable development as a concept bears a persuasive character. Actors of all kinds may contribute to it, citizens, enterprises, NGOs, governments et cetera. Thinking about the governance of sustainable development leads us to the recognition of a multi-level, multi-scale, multi-disciplinary character of the problematique. Moreover, the term development refers to change, to transitions and transformations. Governance of sustainable development therefore has to cope with complex dynamics. This chapter deals with the specific consequences of sustainability governance inside knowledge democracies. The concept of knowledge democracy sheds new light on the emerging relationships between politics, media and science. It shows how the emergence of participatory democracy besides representative democracy, the revolutionary rise of social media besides corporate media, the emergence of transdisciplinary trajectories besides classical disciplinary science lead to explosions of complex interactions. We will digress upon the variety of possible future variants of knowledge democracies, quiet and turbulent ones, in relation to the quest for sustainable development. Our main conclusion will be that strategies for sustainability may vary with the types of knowledge democracies around.
    Language: English
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  • 40
    Publication Date: 2023-07-18
    Language: English
    Type: info:eu-repo/semantics/report
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  • 41
    Publication Date: 2023-07-18
    Description: In this study we compare the response of four state-of-the-art Earth system models to climate engineering under scenario G1 of two model intercomparison projects: GeoMIP (Geoengineering Model Intercomparison Project) and IMPLICC (EU project "Implications and risks of engineering solar radiation to limit climate change"). In G1, the radiative forcing from an instantaneous quadrupling of the CO 2 concentration, starting from the preindustrial level, is balanced by a reduction of the solar constant. Model responses to the two counteracting forcings in G1 are compared to the preindustrial climate in terms of global means and regional patterns and their robustness. While the global mean surface air temperature in G1 remains almost unchanged compared to the control simulation, the meridional temperature gradient is reduced in all models. Another robust response is the global reduction of precipitation with strong effects in particular over North and South America and northern Eurasia. In comparison to the climate response to a quadrupling of CO 2 alone, the temperature responses are small in experiment G1. Precipitation responses are, however, in many regions of comparable magnitude but globally of opposite sign.
    Language: English
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  • 42
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    In:  Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
    Publication Date: 2023-07-18
    Description: We examine the claim that in governance for solar climate engineering research, and especially field tests, there is no need for external governance beyond existing mechanisms such as peer review and environmental impact assessments that aim to assess technically defined risks to the physical environment. By drawing on the historical debate on recombinant DNA research, we show that defining risks is not a technical question but a complex process of narrative formation. Governance emerges from within, and as a response to, narratives of what is at stake in a debate. In applying this finding to the case of climate engineering, we find that the emerging narrative differs starkly from the narrative that gave meaning to rDNA technology during its formative period, with important implications for governance. While the narrative of rDNA technology was closed down to narrowly focus on technical risks, that of climate engineering continues to open up and includes social, political and ethical issues. This suggests that, in order to be legitimate, governance must take into account this broad perception of what constitutes the relevant issues and risks of climate engineering, requiring governance that goes beyond existing mechanisms that focus on technical risks. Even small-scale field tests with negligible impacts on the physical environment warrant additional governance as they raise broader concerns that go beyond the immediate impacts of individual experiments.
    Language: English
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  • 43
    Publication Date: 2023-07-18
    Language: English
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  • 44
    Publication Date: 2023-07-18
    Language: English
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  • 45
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    In:  IASS Blog, 01.12.2014
    Publication Date: 2023-07-18
    Description: It is often claimed that a higher ratio of natural gas to coal in our energy mix can mitigate current carbon dioxide emissions and serve as a 'bridge' to future renewable-based scenarios. This is because the carbon footprint of energy produced through the combustion of methane is about half that of energy produced from coal.
    Language: English
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  • 46
    Publication Date: 2023-07-18
    Description: The Indo-Gangetic Plain (IGP) region is one of the most densely populated regions in the World, but ground-based observations of air pollutants are highly limited in this region. Here, surface ozone observations made during March 2009-June 2011 at a semi-urban site (Pantnagar; 29.0°N, 79.5°E, 231m amsl) in the IGP region are presented. Ozone mixing ratios show a daytime photochemical buildup with ozone levels sometimes as high as 100 ppbv. Seasonal variation in 24-h average ozone shows a distinct spring maximum (39.3±18.9 ppbv in May) while daytime (1130-1630h) average ozone shows an additional peak during autumn (48.7±13.8 ppbv in November). The daytime, but not daily average, observed ozone seasonality is in agreement with the space-borne observations of OMI tropospheric column NO2, TES CO (681hPa), surface ozone observations at a nearby high altitude site (Nainital) in the central Himalayas and to an extent with results from a global chemistry transport model (MATCH-MPIC). It is suggested that spring and autumn ozone maximum are mainly due to photochemistry, involving local pollutants and small-scale dynamical processes. Biomass burning activity over the northern Indian region could act as an additional source of ozone precursors during spring. The seasonal ozone photochemical buildup is estimated to be 32-41 ppbv during spring and autumn and 9-14 ppbv during August-September. A correlation analysis between ozone levels at Pantnagar and Nainital along with the mixing depth data suggests that emissions and photochemical processes in the IGP region influence the air quality of pristine Himalayan region, particularly during midday hours of spring. The evening rate of change (8.5 ppbv hr-1) is higher than the morning rate of change, which is dissimilar to those at other urban or rural sites. Ozone seasonality over the IGP region is different than that over southern India. Results from the MATCH-MPIC model capture observed ozone seasonality but overestimate ozone levels. Model simulated daytime ratios of H2O2/HNO3 are higher and suggesting that this region is in a NOx-limited regime. A chemical box model (NACR Master Mechanism) is used to further corroborate this using a set of sensitivity simulations, and to estimate the integrated net ozone production in a day (72.9 ppbv) at this site.
    Language: English
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  • 47
    Publication Date: 2023-07-18
    Description: In this study the sensitivity of the model performance of the chemistry transport model (CTM) LOTOS-EUROS to the description of the temporal variability of emissions was investigated. Currently the temporal release of anthropogenic emissions is described by European average diurnal, weekly and seasonal time profiles per sector. These default time profiles largely neglect the variation of emission strength with activity patterns, region, species, emission process and meteorology. The three sources dealt with in this study are combustion in energy and transformation industries (SNAP1), nonindustrial combustion (SNAP2) and road transport (SNAP7). First of all, the impact of neglecting the temporal emission profiles for these SNAP categories on simulated concentrations was explored. In a second step, we constructed more detailed emission time profiles for the three categories and quantified their impact on the model performance both separately as well as combined. The performance in comparison to observations for Germany was quantified for the pollutants NO2, SO2 and PM10 and compared to a simulation using the default LOTOS-EUROS emission time profiles. The LOTOS-EUROS simulations were performed for the year 2006 with a temporal resolution of 1 h and a horizontal resolution of approximately 25 × 25km2. In general the largest impact on the model performance was found when neglecting the default time profiles for the three categories. The daily average correlation coefficient for instance decreased by 0.04 (NO2), 0.11 (SO2) and 0.01 (PM10) at German urban background stations compared to the default simulation. A systematic increase in the correlation coefficient is found when using the new time profiles. The size of the increase depends on the source category, component and station. Using national profiles for road transport showed important improvements in the explained variability over the weekdays as well as the diurnal cycle for NO2. The largest impact of the SNAP1 and 2 profiles were found for SO2. When using all new time profiles simultaneously in one simulation, the daily average correlation coefficient increased by 0.05 (NO2), 0.07 (SO2) and 0.03 (PM10) at urban background stations in Germany. This exercise showed that to improve the performance of a CTM, a better representation of the distribution of anthropogenic emission in time is recommendable. This can be done by developing a dynamical emission model that takes into account regional specific factors and meteorology.
    Language: English
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  • 48
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    In:  IASS Blog, 18.12.2014
    Publication Date: 2023-07-18
    Language: English
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  • 49
    Publication Date: 2023-07-18
    Language: English
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  • 50
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    In:  Recarbonization of the biosphere : ecosystems and the global carbon cycle
    Publication Date: 2023-07-18
    Language: English
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