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  • 1
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Press
    Call number: PIK N 071-07-0343 ; PIK N 071-08-0070 ; PIK N 071-08-0096 ; M 17.4094
    Type of Medium: Monograph available for loan
    Pages: 996 S. , zahlr. Ill. , 1 CD-ROM
    ISBN: 9780521880091 , 978-0-521-70596-7
    Location: A 18 - must be ordered
    Location: A 18 - must be ordered
    Location: A 18 - must be ordered
    Location: Upper compact magazine
    Branch Library: PIK Library
    Branch Library: PIK Library
    Branch Library: PIK Library
    Branch Library: GFZ Library
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  • 2
    Call number: AWI A8-95-0060
    Type of Medium: Monograph available for loan
    Pages: XVI, 452 Seiten , Illustrationen
    Edition: Second revised editon 1986, reprinted 1995
    ISBN: 9027723435
    Series Statement: Atmospheric Sciences Library
    Language: English
    Note: Contents: Preface. - List of Principal Symbols. - Chapter 1. The Middle Atmosphere and Its Evolution. - 1.1 Introduction. - 1.2 Evolution of the Earth's atmosphere. - 1.3 Possible perturbations. - References. - Chapter 2. Chemical Concepts in the Atmosphere. - 2.1 Introduction. - 2.2 Thermodynamic considerations. - 2.3 Elementary chemical kinetics. - 2.3.1 Collision theory of bimolecular reactions. - 2.3.2 Unimolecular reactions. - 2.3.3 Termolecular reactions. - 2.4 Term symbols and their use. - 2.4.1 General. - 2.4.2 Selection rules for electronic radiative processes. - 2.5 Photolysis processes. - 2.6 Excited species in the middle atmosphere. - References and bibliography. - Chapter 3. Structure and Dynamics. - 3.1 Introduction. - 3.2 Vertical structure and some observed dynamical characteristics. - 3.3 Fundamental description of atmospheric dynamics. - 3.3.1 The primitive equations. - 3.3.2 The quasi-geostrophic potential vorticity equation. - 3.4 Effects of dynamics on chemical species. - 3.5 General circulation models. - 3.6 Dynamics of the stratosphere in two dimensions: a conceptual view. - 3.6.1 Zonal means and eddies. - 3.6.2 Descriptions of the mean meridional stratospheric circulation. - 3.7 The importance of wave transience and dissipation. - 3.8 One dimensional representations of the atmosphere. - References. - Chapter 4. Radiation. - 4.1 Introduction. - 4.2 Solar radiation at the top of the atmosphere. - 4.2.1 The sun as a black body. - 4.2.2 The observed solar spectrum. - 4.3 The attenuation of solar radiation in the atmosphere. - 4.3.1 Absorption. - 4.3.2 Scattering by molecules and aerosol particles. - 4.4 Radiative transfer. - 4.4.1 General equations. - 4.4.2 Solution of the equation of radiative transfer for wavelengths less than 4 µm : Multiple scattering. - 4.4.3 Solution of the radiative transfer equation at wavelengths longer than 4 µm : Absorption and emission of infrared radiation. - 4.5 The thermal effects of radiation. - 4.5.1 Heating due to absorption of radiation. - 4.5.2 Cooling by radiative emission. - 4.6 Photochemical effects of radiation. - 4.6.1 General. - 4.6.2 Absorption cross sections of the principal atmospheric molecules 4.6.3 Numerical calculation of photodissociation coefficients. - References. - Chapter 5. Composition and Chemistry. - 5.1 General. - 5.2 Oxygen compounds. - 5.2.1 Pure oxygen chemistry. - 5.2.2 The odd oxygen family and some observations. - 5.3 Carbon compounds. - 5.3.1 Methane. - 5.3.2 Methane oxidation chemistry. - 5.3.3 Some end products of methane oxidation: carbon monoxide and dioxide. - 5.4 Hydrogen compounds. - 5.4.1 General. - 5.4.2 Odd hydrogen chemistry. - 5.4.3 The odd hydrogen family and some observations. - 5.5 Nitrogen compounds. - 5.5.1 Sources of stratospheric nitrogen oxides. - 5.5.2 Chemistry of odd nitrogen and nitric acid in the stratosphere. - 5.5.3 The odd nitrogen family: lifetimes and observations. - 5.5.4 Chemistry of odd nitrogen in the lower thermosphere and mesosphere. - 5.5.5 The odd nitrogen family in the lower thermosphere and mesophere. - 5.6 Chlorine compounds. - 5.6.1 General. - 5.6.2 Chlorine chemistry. - 5.6.3 The odd chlorine family: lifetimes and observations. - 5.7 Other halogens. - 5.8 Sulfur compounds and formation ofaerosols. - 5.9 Generalized ozone balance. - References. - Chapter 6. The Ions. - 6.1 Introduction. - 6.2 Formation of ions in the middle atmosphere. - 6.2.1 Effect of solar radiation. - 6.2.2 The effect of energetic particles. - 6.2.3 Comparison of different ionization processes. - 6.3 Positive ion chemistry. - 6.3.1 Positive ions in the E region. - 6.3.2 Positive ions in the D region. - 6.3.3 Positive ions in the stratosphere. - 6.4 Negative ion chemistry. - 6.4.1 Negative ions in the D region. - 6.4.2 Negative ions in the stratosphere. - 6.5 Effect of ionic processes on neutral constituents. - 6.6 Radio waves in the lower ionosphere. - References. - Chapter 7. Possible Perturbations and Atmospheric Responses. - 7.1 Introduction. - 7.2 The importance of coupling in the study of perturbations. - 7.3 The effect of changes in the solar irradiance. - 7.4 Particle precipitation. - 7.5 Volcanic emissions. - 7.6 Anthropogenic emissions. - 7.6.1 Carbon dioxide. - 7.6.2 Methane. - 7.6.3 Nitrous oxide. - 7.6.4 Aircraft in the troposphere and lower stratosphere. - 7.6.5 The chlorofluorocarbons (CFC's). - 7.6.6 Simultaneous perturbations. - References. - Appendix A. Numerical values of physical constants and other data. - Appendix B. Conversion factors. - Appendix C. Reaction rate constants. - Appendix D. Estimated mixing ratio profiles. - Index.
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 3
  • 4
    Publication Date: 2019-12-03
    Description: The Southern Hemisphere Antarctic stratosphere experienced two noteworthy events in 2015: a significant injection of sulfur from the Calbuco volcanic eruption in Chile in April, and a record-large Antarctic ozone hole in October and November. Here, we quantify Calbuco's influence on stratospheric ozone depletion in austral spring 2015 using observations and an earth system model. We analyze ozonesondes, as well as data from the Microwave Limb Sounder. We employ the Community Earth System Model, version 1, with the Whole Atmosphere Community Climate Model (CESM1(WACCM)) in a specified dynamics setup, which includes calculations of volcanic effects. The Cloud Aerosol Lidar with Orthogonal Polarization data indicate enhanced volcanic liquid sulfate 532 nm backscatter values as far poleward as 68°S during October and November (in broad agreement with WACCM). Comparison of the location of the enhanced aerosols to ozone data supports the view that aerosols played a major role in increasing the ozone hole size, especially at pressure levels between 150 and 100 hPa. Ozonesonde vertical ozone profiles from the sites of Syowa, South Pole, and Neumayer, display the lowest individual October or November measurements at 150 hPa since the 1991 Mt. Pinatubo eruption period, with Davis showing similarly low values, but no available 1990s data. The analysis suggests that under the cold conditions ideal for ozone depletion, stratospheric volcanic aerosol particles from the moderate-magnitude eruption of Calbuco in 2015 greatly enhanced austral ozone depletion, particularly at 55–68°S, where liquid binary sulfate aerosols have a large influence on ozone concentrations.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 5
    Publication Date: 2022-05-25
    Description: Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of National Academy of Sciences for personal use, not for redistribution. The definitive version was published in Proceedings of the National Academy of Sciences of the United States of America 110 (2013): 7531-7532, doi:10.1073/pnas.1306240110.
    Description: Stratospheric ozone loss is on course to become a solved environmental problem, with all significant producing countries (including China and India) undertaking complete phaseouts of ozone-depleting substances. The universal concurrence and speed with which ozone loss has been addressed are sometimes heralded as signs that effective international agreements on other problems of the global commons are just around the corner. But progress on many other issues has been strikingly limited. Is ozone the exception, rather than the rule, and if so why? Here we present one way to illuminate why some environmental problems are more tractable than others by consideration of a “nested” (vs. non-nested) framework. We will refer to nesting as having three components: intellectual, societal, and institutional. Intellectual nesting refers to the academic communities that study the roots of the problem as well as possible solutions. Societal nesting refers to the sectors of human actors and activities that are associated with the problem. Institutional nesting describes the types of governance or management structures that could address the problem. We define a fully nested environmental problem as one for which the science of the problem is rooted within multiple, disparate disciplines, and for which the causes, impacts, and solutions are nested within different sectors of society and government. Within these definitions, we discuss marine biodiversity loss as an example of a deeply nested environmental problem, climate change as a mostly nested environmental problem, and ozone depletion as a much less nested environmental problem.
    Description: 2013-11-07
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
    Format: application/pdf
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  • 6
    Publication Date: 2020-03-05
    Description: Understanding the cooling effect of recent volcanoes is of particular interest in the context of the post-2000 slowing of the rate of global warming. Satellite observations of aerosol optical depth above 15 km have demonstrated that small-magnitude volcanic eruptions substantially perturb incoming solar radiation. Here we use lidar, Aerosol Robotic Network, and balloon-borne observations to provide evidence that currently available satellite databases neglect substantial amounts of volcanic aerosol between the tropopause and 15 km at middle to high latitudes and therefore underestimate total radiative forcing resulting from the recent eruptions. Incorporating these estimates into a simple climate model, we determine the global volcanic aerosol forcing since 2000 to be −0.19 ± 0.09 Wm−2. This translates into an estimated global cooling of 0.05 to 0.12°C. We conclude that recent volcanic events are responsible for more post-2000 cooling than is implied by satellite databases that neglect volcanic aerosol effects below 15 km.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 118 (1980), S. 58-85 
    ISSN: 1420-9136
    Keywords: NO2 distribution ; Ozone destruction by NO x
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The catalytic destruction of stratospheric ozone by the oxides of nitrogen is believed to be an important part of the global ozone balance. The lack of sufficient measurements of NO x concentrations has impeded efforts to quantify this process. Recent measurements of stratospheric nitrogen dioxide from ground-based stations as well as aircraft and balloons have provided a first approximation to a global distribution of NO2 vertical columns at sunset. These observed vertical columns have been translated into time-dependent vertical NO2 profiles by means of a one-dimensional atmospheric photochemical model. Using recent observations of air temperature and ozone along with this information, the independent instantaneous (one second) rates of ozone production from oxygen photolysis P(O3), of ozone destruction from pure oxygen species (Chapman reactions) L(O x ), and of ozone destruction by nitrogen oxides L(NO x ) were estimated over the three-dimensional atmosphere. These quantities are displayed as zonal average contour maps, summed over various latitude zones, summed over various altitude bands, and integrated globally between 15 and 45 km. Although the global summation between 15 and 45 km by no means tells the complete story, these numbers are of some interest, and the relative values are: P(O3), 100; L(O x ), 15; L(NO x ), 45±15. It is to be emphasized that this relative NO x contribution to the integrated ozone balance is not a measure of the sensitivity of ozone to possible perturbations of stratospheric NO x ; recent model results must be examined for current estimates of this sensitivity.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Human influence on climate has been detected in surface air temperature, sea level pressure, free atmospheric temperature, tropopause height and ocean heat content. Human-induced changes have not, however, previously been detected in precipitation at the global scale, partly because changes ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 427 (2004), S. 289-291 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ...The discovery in 1985 of an unprecedented 'hole' in Antarctica's ozone layer heralded the beginning of one of the most influential environmental stories of the late twentieth century. The tale of the missing ozone at the bottom of the world was made all the more intriguing by its strong seasonal ...
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Decision sciences 6 (1975), S. 0 
    ISSN: 1540-5915
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: One important aspect of experimental design is the decision whether to use a one- or two-tailed hypothesis test. Assuming that the sample size and the level of significance have been specified, the selection of an alternative hypothesis can materially affect the conclusion drawn from the experiment. In the past, this selection was made on a subjective basis or for pragmatic reasons which can bias the experiment. This paper suggests an expected value approach, maximizing the expected power of the test, to place the selection of alternative hypotheses in an objective and reliable decision framework.
    Type of Medium: Electronic Resource
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