ALBERT

Note: Contents I. Selected scientific and coordinating staff Research Unit 1a: The polar atmosphere and cryosphere in a changing climate Boike, Julia Diekmann, Bernhard Eisen, Olaf Grosse, Guido Hellmer, Hartmut H. Herzschuh, Ulrike Humbert, Angelika Lantuit, Hugues Mollenhauer, Gesine Rex, Markus Wilhelms, Frank Research Unit lb: Climate interactions with polar seas, marine ecosystems Bridging research and society: products, tools and climate services and biogeochernical processes Boetius, Antje Bracher, Astrid Brey, Thomas Haas, Christian Kanzow, Torsten Klaas, Christine Meyer, Bettina Pörtner, Hans-Otto Richter, Claudio Rost, Björn Soltwedel, Thomas Strass, Volker H. Waite, Anya M. Research Unit 2: Fragile coasts and she!f seas Abele, Doris Boersma, Maarten Buschbaum, Christian Gerdts, Gunnar John, Uwe Kasten, Sabine Koch, Boris Wegner, K. Mathias Wiltshire, Karen Helen Research Unit 3: The Earth system from a polar perspective: data, modeling and synthesis Bijma, Jelle Jokat, Wilfried Jung, Thomas Knorr, Gregor Köhler, Peter Laepple, Thomas Lamy, Frank Lohmann, Gerrit Schlindwein, Vera Stein, Rüdiger Tiedemann, Ralf Wolf-Gladrow, Dieter Research Unit 4: Bridging research and society: products, tools and climate services Bergmann, Melanie Buck, Bela H. Frickenhaus, Stephan Grosfeld, Klaus Gutow, Lars Krause, Gesche Research Unit 5: Research infrastructure - performance categories LK I and LK II Nixdorf, Uwe II. Indicators and resources 1. Indicators and resources by Research Units 2. Indicators and resources by user facilities 3. Indicators and resources by program Program PACES II "Marine, Coastal and Polar Systems" 4. Indicators for the center Ill. Definition of indicators IV. List of abbreviations Imprint

Note: Contents List of most commonly used abbreviations I. Helmholtz Association - Mission and Strategy II. Helmholtz Research Field Earth and Environment II.1 Overview II. 2 Programs Ill. Alfred Wegener Institute Helmholtz Centre III.1 Organization Ill. 2 Strategic partnerships and cooperation Ill. 3 Research infrastructure Ill. 4 Career development, talent management and equal opportunity Ill. 5 Knowledge and technology transfer Ill. 6 Scientific awards and appointments Ill. 7 Membership of international Boards and Committees 2013-2016 (selection) IV. Research Units IV. 1a Research Unit 1a The polar atmosphere and cryosphere in a changing climate IV. 1a.1 Mission statement IV. 1a.2 Introduction IV. 1a.3 Scientific questions IV. 1a.4 Approach of the Research Unit IV. 1a.5 Structure of the Research Unit IV. 1a.6 Scientific outcomes IV. 1a.7 Leadership of and contributions to large national and international projects and programs IV. 1a.8 Career development and personnel turnover IV. 1a.9 Overview of Contribution to Grand Challenges IV. 1a.10 Outlook IV. 1a.11 Budget, personnel and publications IV. 1a.12 References IV. 1b Research Unit 1b Climate interactions with polar seas, marine ecosystems and biogeochemical processes IV. 1b.1 Mission statement IV. 1b.2 Introduction IV. 1b.3 Scientific questions IV. 1b.4 Approach of the Research Unit IV. 1b.5 Structure of the Research Unit IV. 1b.6 Scientific outcomes IV. 1b.7 Leadership of and contributions to large national and international projects and programs IV. 1b.8 Career development and personnel turnover IV. 1b.9 Overview of contribution to Grand Challenges IV. 1b.10 Outlook IV. 1b.11 Budget, personnel and publications IV. 1b.12 References IV.2 Research Unit 2 Fragile coasts and shelf seas IV. 2.1 Mission statement IV. 2.2 Introduction IV. 2.3 Scientific questions IV. 2.4 Approach of the Research Unit IV. 2.5 Structure of the Research Unit IV. 2.6 Scientific outcomes IV. 2.7 Leadership of and contributions to large national and international projects and programs IV. 2.8 Career development and personnel turnover IV. 2.9 Overview of contribution to Grand Challenges IV. 2.10 Outlook IV. 2.11 Budget, personnel and publications IV. 2.12 References IV. 3 Research Unit 3 The Earth system from a polar perspective: data, modeling and synthesis IV. 3.1 Mission statement IV. 3.2 Introduction IV. 3.3 Scientific questions IV. 3.4 Approach of the Research Unit IV. 3.5 Structure of the Research Unit IV. 3.6 Scientific outcomes IV. 3.7 Leadership and contributions to large national and international projects and programs IV. 3.8 Career development and personnel turnover IV. 3.9 Overview of contribution to Grand Challenges IV. 3.10 Outlook IV. 3.11 Budget, personnel and publications IV. 3.12 References IV. 4 Research Unit 4 Bridging research and society: products, tools and climate services IV. 4.1 Mission statement IV. 4.2 Introduction IV. 4.3 Scientific tasks and services IV. 4.4 Approach of the Research Unit IV. 4.5 Structure of the Research Unit IV. 4.6 Scientific outcomes IV. 4.7 Leadership of and contributions to large national and international projects and programs IV. 4.8 Career development and personnel turnover IV. 4.9 Outlook IV. 4.10 Budget, personnel and publications IV. 4.11 References IV.5 Research Unit 5 Research infrastructure - performance categories LK I and LK II IV. 5.1 Mission statement IV. 5.2 Overview IV. 5.3 Research Unit SA IV. 5.4 Research Unit 58 (LK II Infrastructure) V. Recommendations of the Helmholtz Senate V.1 Recommendations of the Helmholtz Senate V.2 Detailed recommendations of the Helmholtz Senate for each Research Unit (not covered above) Imprint

Note: Contents 1 Using Lake Sedimentary DNA to Reconstruct Biodiversity Changes / Eric Capo, Cécilia Barouillet, and John P. Smol 2 The Sources and Fates of Lake Sedimentary DNA / Charline Giguet-Covex, Stanislav Jelavić, Anthony Foucher, Marina A. Morlock, Susanna A. Wood, Femke Augustijns, Isabelle Domaizon, Ludovic Gielly, and Eric Capo 3 The Sedimentary Ancient DNA Workflow / Peter D. Heintzman, Kevin Nota, Alexandra Rouillard, Youri Lammers, Tyler J. Murchie, Linda Armbrecht, Sandra Garcés-Pastor, and Benjamin Vernot 4 Bacterial and Archaeal DNA from Lake Sediments / Aurèle Vuillemin, Marco J. L. Coolen, Jens Kallmeyer, Susanne Liebner, and Stefan Bertilsson 5 Cyanobacterial DNA from Lake Sediments / Marie-Eve Monchamp and Frances R. Pick 6 Protist DNA from Lake Sediments / Cécilia Barouillet, Isabelle Domaizon, and Eric Capo 7 Diatom DNA from Lake Sediments / Katharina Dulias, Laura S. Epp, and Kathleen R. Stoof-Leichsenring 8 Aquatic Vegetation DNA from Lake Sediments / Aloïs Revéret, Inger G. Alsos, and Peter D. Heintzman 9 Aquatic Animal DNA from Lake Sediments / Irene Gregory-Eaves, Marie-Eve Monchamp, and Zofia E. Taranu 10 Terrestrial Plant DNA from Lake Sediments / Sandra Garcés-Pastor, Kevin Nota, Dilli P. Rijal, Sisi Liu, Weihan Jia, Maria Leunda, Christoph Schwörer, Sarah E. Crump, Laura Parducci, and Inger G. Alsos 11 Terrestrial Fauna and Hominin DNA from Sedimentary Archives / Tyler J. Murchie, Charline Giguet-Covex, Peter D. Heintzman, Viviane Slon, and Yucheng Wang 12 An Overview of Biodiversity and Network Modeling Approaches: Applications to Sedimentary DNA Records / Zofia E. Taranu, Irene Gregory-Eaves, and Marie-Eve Monchamp 13 Perspectives and Future Developments Within Sedimentary DNA Research / Luke E. Holman, Yi Wang, Rikai Sawafuji, Laura S. Epp, Kristine Bohmann, and Mikkel Winther Pedersen Glossary, Acronyms and Abbreviations Index

Note: Contents Preface Part I Anatomy of a cyclone 1 Anatomy of a cyclone 1.1 A 'typical' extra-tropical cyclone 1.2 Describing the atmosphere 1.3 Air masses and fronts 1.4 The structure of a typical extra-tropical cyclone Review questions 2 Mathematical methods in fluid dynamics 2.1 Scalars and vectors 2.2 The algebra of vectors 2.3 Scalar and vector fields 2.4 Coordinate systems on the Earth 2.5 Gradients of vectors 2.6 Line and surface integrals 2.7 Eulerian and Lagrangian frames of reference 2.8 Advection Review questions 3 Properties of fluids 3.1 Solids, liquids, and gases 3.2 Thermodynamic properties of air 3.3 Composition of the atmosphere 3.4 Static stability 3.5 The continuum hypothesis 3.6 Practical assumptions 3.7 Continuity equation Review questions 4 Fundamental forces 4.1 Newton's second law: F=ma 4.2 Body, surface, and line forces 4.3 Forces in an inertial reference frame 4.4 Forces in a rotating reference frame 4.5 The Navier-Stokes equations Review questions 5 Scale analysis 5.1 Dimensional homogeneity 5.2 Scales 5.3 Non-dimensional parameters 5.4 Scale analysis 5.5 The geostrophic approximation Review questions 6 Simple steady motion 6.1 Natural coordinate system 6.2 Balanced flow 6.3 The Boussinesq approximation 6.4 The thermal wind 6.5 Departures from balance Review questions 7 Circulation and vorticity 7.1 Circulation 7.2 Vorticity 7.3 Conservation of potential vorticity 7.4 An introduction to the vorticity equation Review questions 8 Simple wave motions 8.1 Properties of waves 8.2 Perturbation analysis 8.3 Planetary waves Review questions 9 Extra-tropical weather systems 9.1 Fronts 9.2 Frontal cyclones 9.3 Baroclinic instability Review questions Part II Atmospheric phenomena 10 Boundary layers 10.1 Turbulence 10.2 Reynolds decomposition 10.3 Generation of turbulence 10.4 Closure assumptions Review questions 11 Clouds and severe weather 11.1 Moist processes in the atmosphere 11.2 Air mass thunderstorms 11.3 Multi-cell thunderstorms 11.4 Supercell thunderstorms and tornadoes 11.5 Mesoscale convective systems Review questions 12 Tropical weather 12.1 Scales of motion 12.2 Atmospheric oscillations 12.3 Tropical cyclones Review questions 13 Mountain weather 13.1 Internal gravity waves 13.2 Flow over mountains 13.3 Downslope windstorms Review questions 14 Polar weather 14.1 Katabatic winds 14.2 Barrier winds 14.3 Polar lows Review questions 15 Epilogue: the general circulation 15.1 Fueled by the Sun 15.2 Radiative-convective equilibrium 15.3 The zonal mean circulation 15.4 The angular momentum budget 15.5 The energy cycle Appendix A - symbols Appendix Β - constants and units Bibliography Index

Note: Inhaltsverzeichnis Vorwort Kapitel 1 Dringlichst gesucht – Wege aus der Klimakrise Alarmstufe Rot für Mensch und Natur Lösungen für das Treibhausgas-Problem? CONCLUSIO: Die Klimakrise kennt nur eine Lösung: Treibhausgasneutralität Kapitel 2 Die Rolle des Ozeans im Kohlenstoffkreislauf der Erde Wie der Ozean Kohlendioxid aufnimmt CONCLUSIO: Kohlenstoffspeicher Ozean: Riesig, effizient und in Gefahr 67 Kapitel 3 Das ungenutzte Klimaschutzpotenzial der Ökosysteme an Land Wälder, Wiesen und Böden als Kohlenstoffspeicher CONCLUSIO: Lösungen, die viel zu selten umgesetzt werden Kapitel 4 Marine CDR-Verfahren: Forschung unter Zeit- und Erwartungsdruck Ein Ozean der Möglichkeiten oder gefährlicher Hype? Kapitel 5 Mehr Kohlenstoffeinlagerung in Wiesen und Wäldern des Meeres? Blue Carbon: Ein Lösungsansatz mit doppeltem Nutzen CONCLUSIO: Küstenökosysteme: Marine Kohlenstoffsenke mit unverzichtbaren Zusatzleistungen Kapitel 6 Künstlicher Auftrieb: Die Idee von der Begrünung des Ozeans Eine Anschubhilfe für die biologische Kohlenstoffpumpe CONCLUSIO: Künstlicher Auftrieb – Prädikat: „nur bedingt nützlich“ Kapitel 7 Gezielte Eingriffe in die Meereschemie Alkalinitätserhöhung: Verfahren in den Kinderschuhen CONCLUSIO: Alkalinitätserhöhung – theoretisch verstanden, im Feld jedoch kaum getestet Kapitel 8 Kohlendioxid verpressen tief unter dem Meer Gasspeicherung in Sandsteinschichten und Basaltgestein CONCLUSIO: Kohlendioxidspeicherung unter dem Meer: Ein umstrittenes Verfahren im Aufwind Kapitel 9 Leitprinzipien und Regeln für einen Einsatz mariner CDR-Verfahren Wie regelt man eine verstärkte CO2-Aufnahme des Meeres? CONCLUSIO: Regulierung möglicher CDR-Einsätze: Gebraucht werden klare Strategien und Vorschriften Gesamt-Conclusio Abkürzungen Quellenverzeichnis Mitwirkende Index Partner und Danksagung Abbildungsverzeichnis Impressum .

Note: Contents: Preface. - Acknowledgements. - 1 The meteorology of monsoons. - 1.1 Introduction. - 1.2 Meteorology of the tropics. - 1.3 The Indian Ocean monsoon system. - 1.4 Theory of monsoons. - 2 Controls on the Asian monsoon over tectonic timescales. - 2.1 Introduction. - 2.2 The influence of Tibet. - 2.3 Oceanic controls on monsoon intensity. - 2.4 Summary. - 3 Monsoon evolution on tectonic timescales. - 3.1 Proxies for monsoon intensity. - 3.2 Monsoon reconstruction by oceanic upwelling. - 3.3 Continental climate records. - 3.4 Eolian dust records. - 3.5 Evolving flora of East Asia. - 3.6 History of Western Pacific Warm Pool and the Monsoon. - 3.7 Summary. - 4 Monsoon evolution on orbital timescales. - 4.1 Introduction. - 4.2 Orbital controls on monsoon strength. - 4.3 Eolian records in North-east Asia. - 4.4 Monsoon records from cave deposits. - 4.5 Monsoon variability recorded in ice caps. - 4.6 Monsoon variability recorded in lacustrine sediments. - 4.7 Salinity records in marine sediments. - 4.8 Pollen records in marine sediments. - 4.9 Paleoproductivity as an indicator of monsoon strength. - 4.10 The Early Holocene monsoon. - 4.11 Mid–Late Holocene monsoon. - 4.12 Summary. - 5 Erosional impact of the Asian monsoon. - 5.1 Monsoon and oceanic strontium. - 5.2 Reconstructing erosion records. - 5.3 Reconstructing exhumation. - 5.4 Estimating marine sediment budgets. - 5.5 Erosion in Indochina. - 5.6 Erosion in other regions. - 5.7 Monsoon rains in Oman. - 5.8 Changes in monsoon-driven erosion on orbital timescales. - 5.9 Tectonic impact of monsoon strengthening. - 5.10 Climatic control over Himalaya exhumation. - 5.11 Summary. - 6 The Late Holocene monsoon and human society. - 6.1 Introduction. - 6.2 Holocene climate change and the Fertile Crescent. - 6.3 Holocene climate change and the Indus Valley. - 6.4 Holocene climate change and early Chinese cultures. - 6.5 Monsoon developments since 1000 AD. - 6.6 Monsoon and religion. - 6.7 Impacts of future monsoon evolution. - 6.8 Summary. - References. - Further reading. - Index.

Note: Contents Preface PART I Framework of Climate Science CHAPTER 1 Overview of Climate Science Climate and Climate Change 1-1 Geologic Time Tools of Climate Science: Temperature Scales 1-2 How This Book Is Organized Development of Climate Science 1-3 How Scientists Study Climate Change Overview of the Climate System 1-4 Components of the Climate System 1-5 Climate Forcing 1-6 Climate System Responses 1-7 Time Scales of Forcing Versus Response 1-8 Differing Response Rates and Climate-System Interactions 1-9 Feedbacks in the Climate System Climate Interactions and Feedbacks: Positive and Negative Feedbacks CHAPTER 2 Climate Archives, Data, and Models Climate Archives, Dating, and Resolution 2-1 Types of Archives 2-2 Dating Climate Records 2-3 Climatic Resolution Climatic Data 2-4 Biotic Data 2-5 Geological and Geochemical Data Climate Models 2-6 Physical Climate Models 2-7 Geochemical Models PART II Tectonic-Scale Climate Change CHAPTER 3 CO2and Long-Term Climate Greenhouse Worlds Faint Young Sun Paradox Carbon Exchanges Between Rocks and the Atmosphere 3-1 Volcanic Input of Carbon from Rocks to the Atmosphere 3-2 Removal of CO2 from the Atmosphere by Chemical Weathering Climatic Factors That Control Chemical Weathering Is Chemical Weathering Earth’s Thermostat? 3-3 Greenhouse Role of Water Vapor Is Life the Ultimate Control on Earth’s Thermostat? 3-4 Gaia Hypothesis Looking Deeper into Climate Science: Organic Carbon Subcycle Was There a “Thermostat Malfunction”? A Snowball Earth? CHAPTER Plate Tectonics and Long-Term Climate Plate Tectonics 4-1 Structure and Composition of Tectonic Plates 4-2 Evidence of Past Plate Motions Polar Position Hypothesis 4-3 Glaciations and Continental Positions Since 500 Myr Ago Modeling Climate on the Supercontinent Pangaea 4-4 Input to the Model Simulation of Climate on Pangaea Looking Deeper into Climate Science: Brief Glaciation 440 Myr Ago 4-5 Output from the Model Simulation of Climate on Pangaea Tectonic Control of CO2 Input: BLAG Spreading-Rate Hypothesis 4-6 Control of CO2 Input by Seafloor Spreading 4-7 Initial Evaluation of the BLAG Spreading Rate Hypothesis Tectonic Control of CO2Removal: Uplift-Weathering Hypothesis 4-8 Rock Exposure and Chemical Weathering 4-9 Case Study: The Wind River Basin of Wyoming 4-10 Uplift and Chemical Weathering 4-11 Case Study: Weathering in the Amazon Basin 4-12 Weathering: Both a Climate Forcing and a Feedback? CHAPTER 5 Greenhouse Climate What Explains the Warmth 100 Myr Ago? 5-1 Model Simulations of the Cretaceous Greenhouse 5-2 What Explains the Data-Model Mismatch? 5-3 Relevance of Past Greenhouse Climate to the Future Sea Level Changes and Climate 5-4 Causes of Tectonic-Scale Changes in Sea Level 5-5 Effect of Changes in Sea Level on Climate Looking Deeper into Climate Science: Calculating Changes in Sea Level Asteroid Impact Large and Abrupt Greenhouse Episode near 50 Myr Ago CHAPTER 6 From Greenhouse to Icehouse: The Last 50 Million Years Global Climate Change Since 50 Myr Ago 6-1 Evidence from Ice and Vegetation 6-2 Evidence from Oxygen Isotope Measurements 6-3 Evidence from Mg/Ca Measurements Do Changes in Geography Explain the Cooling? 6-4 Gateway Hypothesis 6-5 Assessment of Gateway Changes Hypotheses Linked to Changes in CO2 6-6 Evaluation of the BLAG Spreading Rate Hypothesis 6-7 Evaluation of the Uplift Weathering Hypothesis Climate DebateTiming of the Uplift in Western North America Future Climate Change at Tectonic Scales Looking Deeper into Climate Science: Organic Carbon: Monterrey Hypothesis PART III Orbital-Scale Climate Change CHAPTER 7 Astronomical Control of Solar Radiation Earth’s Orbit Today 7-1 Earth’s Tilted Axis of Rotation and the Seasons 7-2 Earth’s Eccentric Orbit: Distance Between Earth and Sun Long-Term Changes in Earth’s Orbit 7-3 Changes in Earth’s Axial Tilt Through Time Tools of Climate Science: Cycles and Modulation 7-4 Changes in Earth’s Eccentric Orbit Through Time 7-5 Precession of the Solstices and Equinoxes Around Earth’s Orbit Looking Deeper into Climate Science: Earth’s Precession as a Sine Wave Changes in Insolation Received on Earth 7-6 Insolation Changes by Month and Season 7-7 Insolation Changes by Caloric Seasons Searching for Orbital-Scale Changes in Climatic Records 7-8 Time Series Analysis 7-9 Effects of Undersampling Climate Records 7-10 Tectonic-Scale Changes in Earth’s Orbit CHAPTER 8 Insolation Control of Monsoons Monsoon Circulations 8-1 Orbital-Scale Control of Summer Monsoons Orbital-Scale Changes in North African Summer Monsoons 8-2 “Stinky Muds” in the Mediteranean 8-3 Freshwater Diatoms in the Tropical Atlantic 8-4 Upwelling in the Equatorial Atlantic Orbital Monsoon Hypothesis: Regional Assessment 8-5 Cave Speleothems in China and Brazil 8-6 Phasing of Summer Monsoons Looking Deeper into Climate Science: Insolation-Driven Monsoon Responses: Chronometer for Tuning Monsoon Forcing Earlier in Earth’s History 8-7 Monsoons on Pangaea 200 Myr Ago 8-8 Joint Tectonic and Orbital Control of Monsoons CHAPTER 9 Insolation Control of Ice Sheets Milankovitch Theory: Orbital Control of Ice Sheets Modeling the Behavior of Ice Sheets 9-1 Insolation Control of Ice Sheet Size 9-2 Ice Sheets Lag Behind Summer Insolation Forcing 9-3 Delayed Bedrock Response Beneath Ice Sheets Looking Deeper into Climate Science: Ice Volume Response to Insolation 9-4 Full Cycle of Ice Growth and Decay 9-5 Ice Slipping and Calving Northern Hemisphere Ice Sheet History 9-6 Ice Sheet History: δ18O Evidence 9-7 Confirming Ice Volume Changes: Coral Reefs and Sea Level Is Milankovich’s Theory the Full Answer? Looking Deeper into Climate Science: Sea Level on Uplifting Islands CHAPTER 10 Orbital-Scale Changes in Carbon Dioxide and Methane Ice Cores 10-1 Drilling and Dating Ice Cores 10-2 Verifying Ice-Core Measurements of Ancient Air 10-3 Orbital-Scale Carbon Transfers: Carbon Isotopes Orbital-Scale Changes in CO2 10-4 Where Did the Missing Carbon Go? 10-5 δ13C Evidence of Carbon Transfer How Did the Carbon Get into the Deep Ocean? 10-6 Increased CO2 Solubility in Seawater 10-7 Biological Transfer from Surface Waters A Closer Look at Climate Science: Using δ13C to Measure Carbon Pumping 10-8 Changes in Deep-Water Circulation Orbital-Scale Changes in CH4 Orbital-Scale Climatic Roles: CO2and CH4 CHAPTER 11 Orbital-Scale Interactions, Feedbacks, and Unsolved Problems Climatic Responses Driven by the Ice Sheets Mystery of the 41,000-Year Glacial World 11-1 Did Insolation Really Vary Mainly at 41,000 Years? 11-2 Interhemispheric Cancellation of 23,000-Year Ice Volume Responses? 11-3 CO2 Feedback at 41,000 Years? Mystery of the ~100,000-Year Glacial World 11-4 How Is the Northern Ice Signal Transferred South? Why did the Northern Ice Sheets Vary at ~100,000 Years? Looking Deeper into Climate Science: Link Between Forcing and the Time Constants of Ice Response 11-5 Ice Interactions with Bedrock 11-6 Ice Interactions with the Local Environment 11-7 Ice Interactions with Greenhouse Gases PART IV Deglacial Climate Change CHAPTER 12 Last Glacial Maximum Glacial World: More Ice, Less Gas 12-1 Project CLIMAP: Reconstructing the Last Glacial Maximum 12-2 How Large Were the Ice Sheets? 12-3 Glacial Dirt and Winds Testing Model Simulations Against Biotic Data 12-4 COHMAP: Data-Model Comparisons 12-5 Pollen: Indicator of Climate on the Continents 12-6 Using Pollen for Data-Model Comparisons Data-Model Comparisons of Glacial Maximum Climates 12-7 Model Simulations of Glacial Maximum Climates 12-8 Climate Changes near the Northern Ice Sheets 12-9 Climate Changes far from the Northern Ice Sheets How Cold Were the Glacial Tropics? 12-10 Evidence for a Small Tropical Cooling 12-11 Evidence for a Large Tropical Cooling 12-12 Actual Cooling Was Medium-Small CHAPTER 13 Climate During and Since the Last Deglaciation Fire and Ice: Shift in the Balance of Power 13-1 When Did the Ice Sheets Melt? 13-2 Coral Reefs and Rising Sea Level 13-3 Glitches in the Deglaciation: Deglacial Two-Step To

Note: Table of contents Foreword to the German Edition Foreword to the English Edition Acknowledgments Introduction How to use this book Identification characters Glossary Key to the genera Key to the diatom genera covered by this book Genera and species Achnanthes Bory 1822 Achnanthidium Kützing 1844 Adlofia Lange-Bertalot in Moser et al. 1998 Amphipleura Kützing 1844 Amphora Ehrenberg ex Kützing 1844 Aneumastus D.G. Mann et A.J. Stickle in Round et al. 1990 Anomoeoneis Pfitzer 1871 Astartiella Witkowski, Lange-Bertalot et Metzeltin in Moser et al. 1998 Bacillaria Gmelin 1791 Berkeleya Greville 1827 Biremis D.G. Mann et E.J. Cox 1990 Brachysira Kützing 1836 Caloneis P.T. Cleve 1894 Campylodiscus Ehrenberg 1844 Cavinula D.G. Mann et A.J. Stickle in Round et al. 1990 Chamaepinnularia Lange-Bertalot et Krammer in Lange-Bertalot & Metzeltin 1996 Cocconeis Ehrenberg 1837 Cosmioneis D.G. Mann et A.J. Stickle in Round et al. 1990 Craticula Grunow 1868 Crenotia A.Z. Wojtal 2013 Ctenophora (Grunow) Williams et Round 1986 Cylindrotheca Rabenhorst 1859 Cymatopleura W. Smith 1851 Cymbella C. Agardh 1830 Cymbellafalsa Lange-Bertalot et Metzeltin 2009 Cymbellonitzschia Hustedt in A. Schmidt et al. 1924 Cymbopleura (Krammer) Krammer 1999 Delicata Krammer 2003 Denticula Kützing 1844 Diadesmis Kützing 1844 Diatoma Bory 1824 Didymosphenia M. Schmidt 1899 Dipioneis Ehrenberg 1844 Ellerbeckia R.M. Crawford 1988 Encyonema Kützing 1833 Encyonopsis Krammer 1997 Entomoneis Ehrenberg 1845 Epithemia Brebisson ex Kützing 1844 Eucocconeis P.T. Cleve ex F. Meister 1912 Eunotia Ehrenberg 1837 Fallacia A.J. Stickle et D.G. Mann in Round et al. 1990 Fistulifera Lange-Bertalot 1997 Fragilaria Lyngbye 1819 Fragilariforma Williams et Round 1988 Frustulia Rabenhorst 1853 Geissleria Lange-Bertalot et Metzeltin 1996 Gliwiczia M. Kulikovskiy, Lange-Bertalot et A. Witkowski 2013 Gomphocymbellopsis Krammer 2003 Gomphoneis Cleve 1894 Gomphonema Ehrenberg 1832 Gomphosphenia Lange-Bertalot 1995 Gyrosigma Hassall 1845 Flalamphora (Cleve) Levkov 2009 Hannaea R.M. Patrick 1966 Hantzschia Grunow 1877 Hippodonta Lange-Bertalot, Metzeltin et Witkowski 1996 Humidophila Lowe, Kociolek, Johansen, Van de Vijver, Lange-Bertalot et Kopalovä 2014 Karayevia F.E. Round et L. Bukhtiyarova ex F. E. Round Khursevichia M.S. Kulikovskiy, Lange-Bertalot et Metzeltin 2012 Kobayasiella Lange-Bertalot 1999 Kolbesia F.E. Round et L. Bukhtiyarova ex F.E. Round 1998 Lemnicola Round et Basson 1997 Luticola D.G. Mann in Round et al. 1990 Mastogloia Thwaites in W. Smith 1856 Mayamaea Lange-Bertalot 1997 Melosira C. Agardh 1824 Meridion C. Agardh 1824 Microcostatus Johansen et Sray 1998 Navicula Bory 1822 Navicymbula Krammer 2003 Neidiomorpha Lange-Bertalot et Cantonati 2010 Neidium Pfitzer 1871 Nitzschia Hassall 1845 Nupela Vyverman et Compere 1991 Odontidium Kützing 1844 Orthoseira Thwaites 1848 Paraplaconeis M.S. Kulikovskiy, Lange-Bertlot et Metzeltin 2012 Parlibellus EJ. Cox 1988 Peronia Brebisson et Arnott ex Kitton 1868 Pinnularia Ehrenberg 1843 Placoneis Mereschkowsky 1903 Planothidium Round et Bukhtiyarova 1996 Platessa Lange-Bertalot 2004 Prestauroneis K. Bruder et Medlin 2008 Psammothidium Bukhtiyarova et Round 1996 Pseudofallacia Liu, Kociolek et Wang 2012 Pseudostaurosira Williams et Round 1988 Reimeria Kociolek et Stoermer 1987 Rhoicosphenia Grunow 1860 Rhopalodia O. Müller 1895 Rossithidium Bukhtiyarova et Round 1996 Sellaphora Mereschkowsky 1902 Simonsenia Lange-Bertalot 1979 Skabitschewskia Kulikovskiy et Lange-Bertalot 2015 Stauroforma Flower, Jones et Round 1996 Stauroneis Ehrenberg 1843 Stauronella Mereschkowsky 1901 Staurosira Ehrenberg 1842 Staurosirella Williams et Round 1988 Stenopterobia Brebisson ex Van Heurck 1896 Surirella Turpin 1828 Tabellaria Ehrenberg ex Kützing 1844 Tabularia (Kützing) D.M. Williams et Round 1986 Tetracyclus Ralfs 1843 Tryblionella W. Smith 1853 Ulnaria (Kützing) P. Compere 2001 Selected brackish-water taxa found along the northern Germany coastline References Plates Index to the species

Note: Dissertation, Universität Potsdam, 2023 , CONTENTS 1 SCIENTIFIC BACKGROUND AND RESEARCH QUESTIONS 1.1 Extreme events and attribution 1.2 Arctic climate change and mid-latitude linkages 1.3 Research questions 2 FOUNDATIONS 2.1 Atmospheric basics 2.1.1 Governing equations 2.1.2 Zonal wind and temperature profiles 2.1.3 Atmospheric waves and instabilities 2.1.4 Large-scale variability patterns and blocking 2.2 Atmospheric circulation regimes 2.2.1 Dynamical concepts 2.2.2 Regime computation 2.2.3 Regime number 2.3 Arctic climate change 2.3.1 Recent trends in Arctic sea ice and temperatures 2.3.2 Surface fluxes and energy balance in Arctic regions 2.3.3 Polar amplification mechanisms 2.3.4 Arctic-mid-latitude linkages 2.4 Weather and climate extremes 2.4.1 Recent trends 2.4.2 Dynamical driver of temperature extremes 3 DATA AND METHODS 3.1 ERA5 reanalysis 3.2 Model experiments 3.2.1 The atmospheric general circulation model ECHAM6 3.2.2 Polar Amplification Intercomparison Project data 3.3 Methods 3.3.1 Statistical significance 3.3.2 Extreme definition 4 RESULTS AND DISCUSSION 4.1 Mean circulation in ERA5 and ECHAM6 experiments 4.1.1 Climatological mean states in ERA5 and the reference simulation 4.1.2 Climatological responses in ECHAM6 sensitivity experiments 4.2 Circulation regimes and sea ice-induced frequency changes 4.2.1 Regime structures in ERA5 and ECHAM6 experiments 4.2.2 Regime frequency changes in ERA 4.2.3 Regime frequency changes in ECHAM6 experiments 4.3 Changes in Northern Hemispheric temperature extremes induced by sea ice loss 4.3.1 Extreme occurrence frequency changes 4.3.2 Temperature return level changes 4.4 Links between circulation regimes and extremes over Europe 4.4.1 Winter temperature extremes 4.4.2 Summer heat extremes 4.4.3 Winter wind extremes 4.5 Decomposition of sea ice-induced frequency changes in European winter extremes 4.5.1 Midwinter cold extremes along a SCAN storyline 4.5.2 January warm extremes along a ATl- storyline 4.5.3 February warm extremes along a NAO+ storyline 4.5.4 Comparison with futSST 4.5.5 January wind extremes along a ATL- storyline 4.6 Circulation Analogue-based approach for summer season 4.6.1 ERA5 event definitions 4.6.2 Reference flows and analogues in ERA5 4.6.3 Circulation analogues in ECHAM6 experiments 4.6.4 Decomposition of sea ice-induced changes in European heat extremes 5 CONCLUSION 5.1 Summary 5.2 Final discussion and outlook Appendix A METHODS A.1 Principal Component Analysis A.2 𝑘-Means clustering A.2.1 Algorithm A.2.2 Computation of circulation regimes A.3 Taylor diagram A.4 Regression model for describing ERA5 regime frequency changes A.4.1 General setup A.4.2 Multinomial Logistic Regression A.4.3 Linear predictor A.5 Definition and calculation of return levels A.5.1 Block maxima approach and Generalized Extreme Value distribution A.5.2 Return level estimation A.6 Framework for conditional extreme event attribution Appendix B ADDITIONAL FIGURES B.1 Circulation regimes and sea ice-induced frequency changes B.2 Changes in Northern Hemispheric temperature extremes induced by sea ice loss B.3 Links between circulation regimes and extremes over Europe B.3.1 Conditioned vs. unconditioned ERA5 and wind extreme probabilities B.3.2 Wind and synoptic-scale activity anomalies B.4 Decomposition of sea ice-induced frequency changes in European winter extremes B.5 Circulation Analogue-based approach for summer season B.6 Miscellaneous B.6.1 Recent Arctic sea ice trends B.6.2 futSST forcing field B.6.3 Fluxes over sea ice and ocean surfaces in ECHAM6 BIBLIOGRAPHY