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Modelling The Last Glacial Maximum And Abrupt Climate Changes During The Last Glacial Interglacial Cycle
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Book Synopsis Modelling the Last Glacial Maximum and Abrupt Climate Changes During the Last Glacial-interglacial Cycle by : Xun Gong
Download or read book Modelling the Last Glacial Maximum and Abrupt Climate Changes During the Last Glacial-interglacial Cycle written by Xun Gong and published by . This book was released on 2012 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ice Ages and Interglacials by : Donald Rapp
Download or read book Ice Ages and Interglacials written by Donald Rapp and published by Springer Science & Business Media. This book was released on 2009-08-22 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book studies the history and gives an analysis of extreme climate change on Earth. In order to provide a long-term perspective, the first chapter briefly reviews some of the wild gyrations that occurred in the Earth’s climate hundreds of millions of years ago: snowball Earth and hothouse Earth. Coming closer to modern times, the effects of continental drift, particularly the closing of the Isthmus of Panama are believed to have contributed to the advent of ice ages in the past three million years. This first chapter sets the stage for a discussion of ice ages in the geological recent past (i.e. within the last three million years, with an emphasis on the last few hundred thousand years). The second chapter discusses geological evidence for ice ages – how geologists surmised their existence prior to actual subsurface data that proved the theory. The following two chapters look at ice cores (primarily from Greenland and Antarctica). Chapter 3 discusses how ice core data is processed and Chapter 4 summarizes data obtained from ice cores. Chapter 5 discusses the processing of data obtained from ocean sediments, and summarizes the results, while the following chapter discusses data from other sources, such as "Devil’s Cave." Chapter 7 summarizes the experimental results from Chapters 4, 5, and 6. It provides the foundation for comparison with theories in later chapters. In a perfect world, this data would be totally separate and disconnected from theory. Unfortunately, as the author shows, dating of much of the data was accomplished by "tuning" to the astronomical theory, which introduces circular reasoning. Chapter 8 provides a brief overview of the various theories that have been devised to "explain" the patterns of alternating ice ages and interglacials that have occurred over the past three million years. This serves as an introduction to the following three chapters which presents the astronomical theory in its various manifestations, compare the astronomical theory with data, and then compare other theories with data. Finally, Chapter 12 summarizes what we think we know about ice ages and, more importantly, what we don’t know.
Book Synopsis The Great Ice Age by : R. C. L. Wilson
Download or read book The Great Ice Age written by R. C. L. Wilson and published by Psychology Press. This book was released on 2000 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Great Ice Age documents and explains the natural climatic and palaeoecologic changes that have occurred during the past 2.6 million years, outlining the emergence and global impact of our species during this period. Exploring a wide range of records of climate change, the authors demonstrate the interconnectivity of the components of the Earths climate system, show how the evidence for such change is obtained, and explain some of the problems in collecting and dating proxy climate data. One of the most dramatic aspects of humanity's rise is that it coincided with the beginnings of major environmental changes and a mass extinction that has the pace, and maybe magnitude, of those in the far-off past that stemmed from climate, geological and occasionally extraterrestrial events. This book reveals that anthropogenic effects on the world are not merely modern matters but date back perhaps a million years or more.
Book Synopsis Abrupt Climate Change by : National Research Council
Download or read book Abrupt Climate Change written by National Research Council and published by National Academies Press. This book was released on 2002-04-23 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The climate record for the past 100,000 years clearly indicates that the climate system has undergone periodic-and often extreme-shifts, sometimes in as little as a decade or less. The causes of abrupt climate changes have not been clearly established, but the triggering of events is likely to be the result of multiple natural processes. Abrupt climate changes of the magnitude seen in the past would have far-reaching implications for human society and ecosystems, including major impacts on energy consumption and water supply demands. Could such a change happen again? Are human activities exacerbating the likelihood of abrupt climate change? What are the potential societal consequences of such a change? Abrupt Climate Change: Inevitable Surprises looks at the current scientific evidence and theoretical understanding to describe what is currently known about abrupt climate change, including patterns and magnitudes, mechanisms, and probability of occurrence. It identifies critical knowledge gaps concerning the potential for future abrupt changes, including those aspects of change most important to society and economies, and outlines a research strategy to close those gaps. Based on the best and most current research available, this book surveys the history of climate change and makes a series of specific recommendations for the future.
Book Synopsis Abrupt Climatic Change by : W.H. Berger
Download or read book Abrupt Climatic Change written by W.H. Berger and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, St. Hugues de Biviers, France, October 16-22, 1985
Book Synopsis Encyclopedia of Paleoclimatology and Ancient Environments by : Vivien Gornitz
Download or read book Encyclopedia of Paleoclimatology and Ancient Environments written by Vivien Gornitz and published by Springer Science & Business Media. This book was released on 2008-10-31 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of Springer’s Major Reference Works, this book gives the reader a truly global perspective. It is the first major reference work in its field. Paleoclimate topics covered in the encyclopedia give the reader the capability to place the observations of recent global warming in the context of longer-term natural climate fluctuations. Significant elements of the encyclopedia include recent developments in paleoclimate modeling, paleo-ocean circulation, as well as the influence of geological processes and biological feedbacks on global climate change. The encyclopedia gives the reader an entry point into the literature on these and many other groundbreaking topics.
Book Synopsis Palaeoclimatic Research and Models by : Anver Ghazi
Download or read book Palaeoclimatic Research and Models written by Anver Ghazi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Palaeoclimatology is presently experiencing a period of rapid growth of techniques and concepts. Studies of earth's past climates ryrovide excellent opportunities to examine the interactions between the atmosrhere, oceans, cryosphere and the land surfaces. Thus, there is a growing recognition of the need of close collaboration between palaeoclimatologists and the climate mode 11 ers. The workshop "Palaeoclimatic Research and Models (PRaM)" was organized by the Directorate General for Science, Research and Development within the framework of the Climatology Research Programme of the Commission of the European Communities (CEC). The aim of the workshop was to give to the members of the Contact Group "Climate Models" and "Reconstitution of Past Climates" of the CEC Climatology Research Program~e and to some invited scientists the opportunity to discuss problems of mutual interest. About 35 experts fr.om 10 countries took nart in the workshop. In general, palaeoclimatologists were asked to identify and discuss the data corresponding to the three topics as defined by the programme committee: 1) Abrupt Climate Changes 2) Initiation of Glaciation 3) Glaciated polar regions and their impact on global climate. Climate modellers were asked to give their views as to how these specific problems could be modelled, what use could be ~ade of the available palaeoclimatic data and which complementary data are needed for modelling.
Book Synopsis The Oceans and Rapid Climate Change by : Dan Seidov
Download or read book The Oceans and Rapid Climate Change written by Dan Seidov and published by American Geophysical Union. This book was released on 2001-01-09 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the role of the ocean in fast climate changes in the past and conceivable future. The first half of the 16 papers present data interpretation, hypotheses based on data analyses, and ideas that shed new light on past climates and their evolution. The remaining papers describe climate system models that focus on the global ocean, starting with simpler, ocean-only models that develop into full, three-dimensional models of entire climate systems. Topics include the key climate transitions during the Quaternary period, stochastic resonance in the North Atlantic, and the relationship between glacial- to-interglacial changes of ocean circulation and eolian sediment transport. No index. c. Book News Inc.
Book Synopsis The Climate of Past Interglacials by : F. Sirocko
Download or read book The Climate of Past Interglacials written by F. Sirocko and published by Elsevier. This book was released on 2006-12-08 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, climate fluctuations, such as the Little Ice Age, show that interglacial climate chage in not entirely stable, but responds to even subtle changes in radiative forcing. Through research, it has been made clear that even an abrupt change of climate within years is not just a theoretical possibility but has in fact happened in the prehistoric past. It is therefore clear that in principal it could happen again. Human civilaization has exploded under the mild and relatively stable climatic conditions that have prevailed over the last 11,000 years. This book focuses on revisiting the past and to study climate and environment in a suite of experiments where boundary conditions are similar but not identical to today so we can learn about the climate-environment system, its sensitivity, thresholds and feedback. The palaeoclimate community holds an important key to scientific information on climate change that provides a basis for appropriate adaptation and mitigation strategies. The authors of this book have taken up this challenge and summarize their results in this special volume. It presents state-of-the-art science on new reconstructions from all spheres of the Earth System and on their synthesis, on methodological advances, and on the current ability of numerical models to simulate low and high frequency changes of climate, environment, and chemical cycling related to interglacials. * Summarizes important information on climate change, providing a basis for appropriate adaptation and mitigation strategies for human civilization* Reports on new reconstuctions on methodological advances, numerical models simulating low and high frequence changes, and chemical cycling related to interglacials* Incorporates palaeovegetaion and numerical modeling of climate and environmental and geochemical parameters to address regional feedback to global change with successful data-models
Book Synopsis The Ecology of Abrupt Climate Changes During the Last Glacial Period by :
Download or read book The Ecology of Abrupt Climate Changes During the Last Glacial Period written by and published by . This book was released on 2019 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Global Warming Cycles by : Julie Kerr Casper
Download or read book Global Warming Cycles written by Julie Kerr Casper and published by Infobase Publishing. This book was released on 2010 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on the mechanisms that caused past climate changes, putting the Earth repeatedly into and out of ice ages.
Book Synopsis Understanding Earth's Deep Past by : National Research Council
Download or read book Understanding Earth's Deep Past written by National Research Council and published by National Academies Press. This book was released on 2011-08-02 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is little dispute within the scientific community that humans are changing Earth's climate on a decadal to century time-scale. By the end of this century, without a reduction in emissions, atmospheric CO2 is projected to increase to levels that Earth has not experienced for more than 30 million years. As greenhouse gas emissions propel Earth toward a warmer climate state, an improved understanding of climate dynamics in warm environments is needed to inform public policy decisions. In Understanding Earth's Deep Past, the National Research Council reports that rocks and sediments that are millions of years old hold clues to how the Earth's future climate would respond in an environment with high levels of atmospheric greenhouse gases. Understanding Earth's Deep Past provides an assessment of both the demonstrated and underdeveloped potential of the deep-time geologic record to inform us about the dynamics of the global climate system. The report describes past climate changes, and discusses potential impacts of high levels of atmospheric greenhouse gases on regional climates, water resources, marine and terrestrial ecosystems, and the cycling of life-sustaining elements. While revealing gaps in scientific knowledge of past climate states, the report highlights a range of high priority research issues with potential for major advances in the scientific understanding of climate processes. This proposed integrated, deep-time climate research program would study how climate responded over Earth's different climate states, examine how climate responds to increased atmospheric carbon dioxide and other greenhouse gases, and clarify the processes that lead to anomalously warm polar and tropical regions and the impact on marine and terrestrial life. In addition to outlining a research agenda, Understanding Earth's Deep Past proposes an implementation strategy that will be an invaluable resource to decision-makers in the field, as well as the research community, advocacy organizations, government agencies, and college professors and students.
Book Synopsis An Inverse Model Study of Abrupt Climate Change During Last Ice Age by : Shaoping Lu
Download or read book An Inverse Model Study of Abrupt Climate Change During Last Ice Age written by Shaoping Lu and published by . This book was released on 2010 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geologic records and climate model simulations suggest that changes in the meridional heat transport in the Atlantic Ocean were involved in the abrupt warming events -- the so-called Dansgaard-Oeschger Interstadials (DOIs) -- that punctuated an otherwise cold Greenland climate during the last glacial period. However, the role of Northern Hemisphere (NH) ice sheets in these events remains a subject of controversy. Here we report on the first attempt to combine quantitatively a paleo-temperature proxy with simplified ocean models, with the specific purpose of extracting information about the changes in mass balance of the NH ice sheets during the last glaciation. A Greenland paleotemperature record is combined with the climate models using Bayesian Stochastic Inversion (BSI) in order to estimate the changes that would be required to alter the Atlantic Ocean mass and heat transports between ~30 and 39 thousand years ago. The mean sea level changes implied by changes in NH ice sheet mass balance agree in amplitude and timing with reconstructions from the geologic record, which gives some support to the freshwater forcing hypothesis. Our results are unaffected by uncertainties in the representation of vertical buoyancy transport in the tropical ocean, in large part because the global adjustments to high latitude freshening bypass the tropics and affect sinking rate in the opposite pole. However, the solutions are sensitive to assumptions about physical processes at polar latitudes. We find that the inversion reproduces the gradual changes in sea level and Antarctic temperature inferred from the independent evidence provided by proxy records. The Greenland warm event lasting over 3000 years (DOI 8) can be explained by sustained growth of NH ice sheet and reduced supply of icebergs to the North Atlantic. Our results indicate a more involved role of the NH ice sheets than previously thought, in which both collapse and subsequent growth would be required to explain the full series of the long (> 3000 years) warm events recorded in Greenland ice.
Book Synopsis Marine Isotope Stage 3 in Southern South America, 60 KA B.P.-30 KA B.P. by : Germán Mariano Gasparini
Download or read book Marine Isotope Stage 3 in Southern South America, 60 KA B.P.-30 KA B.P. written by Germán Mariano Gasparini and published by Springer. This book was released on 2016-07-26 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents isotope data reflecting changes in temperature derived from core samples in South America. Marine Isotope Stage (MIS) is examined in detail with respect to Stage 3. With over 20 chapters, this detailed treatise discusses high climatic variability, paleoclimatic events, Dansgaard-Oeschger cycles, continental vertebrates, sea level changes, vegetation and climate changes based on pollen records, and the non-Amazon landscape and fauna from 65 to 20 ka B.P. The book also looks at the earth’s magnetic field and climate change during MIS 3 and MIS 5 and presents a comparison between both stages with respect to marine deposits in Uruguay. With case studies drawn from Brazil, Argentina and Uruguay this book presents research from the some of the worlds experts in this field.
Book Synopsis Mechanisms of Global Climate Change at Millennial Time Scales by : Lloyd D. Keigwin
Download or read book Mechanisms of Global Climate Change at Millennial Time Scales written by Lloyd D. Keigwin and published by American Geophysical Union. This book was released on 1999-01-26 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributors describe the current understanding of abrupt climate variations that have occurred at millennial to submillennial time scales, events now recognized as characteristics of the global climate during the last glaciation. Subjects covered include analysis of modern climate and ocean dynamics, paleoclimate reconstructions derived from the marine, terrestrial and ice core records, and paleoclimate modeling studies. The breadth of global paleoclimate knowledge presented here provides information required to answer many questions and provides a road map to address remaining problems. Most material is from a June 1998 conference. Lacks a subject index. Annotation copyrighted by Book News, Inc., Portland, OR.
Book Synopsis Ocean Circulation by : Andreas Schmittner
Download or read book Ocean Circulation written by Andreas Schmittner and published by John Wiley & Sons. This book was released on 2013-05-02 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 173. The ocean's meridional overturning circulation (MOC) is a key factor in climate change. The Atlantic MOC, in particular, is believed to play an active role in the regional and global climate variability. It is associated with the recent debate on rapid climate change, the Atlantic Multi-Decadal Oscillation (AMO), global warming, and Atlantic hurricanes. This is the first book to deal with all aspects of the ocean's large-scale meridional overturning circulation, and is a coherent presentation, from a mechanistic point of view, of our current understanding of paleo, present-day, and future variability and change. It presents the current state of the science by bringing together the world's leading experts in physical, chemical, and biological oceanography, marine geology, geochemistry, paleoceanography, and climate modeling. A mix of overview and research papers makes this volume suitable not only for experts in the field, but also for students and anyone interested in climate change and the oceans.
Book Synopsis Abrupt Climate Change: North Atlantic Volatility During the Last Ice Age and Modern Arctic Sea Ice Retreat by : Ian L. Eisenman
Download or read book Abrupt Climate Change: North Atlantic Volatility During the Last Ice Age and Modern Arctic Sea Ice Retreat written by Ian L. Eisenman and published by . This book was released on 2008 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last glacial period was characterized by abrupt switches between cold and warm climate regimes recorded in Greenland ice cores. The proximity of Greenland to the sea ice edge, among other factors, suggests that sea ice played an important role in these climate changes. In modern times, recent decades have seen a rapid retreat of Arctic sea ice. The author investigates the physical processes governing these abrupt changes in North Atlantic climate. The questions are approached using global climate models, idealized models, and observational analysis. The main findings of this research are summarized as follows: (i) the atmospheric response to receding glacial ice sheets, with sea ice amplification, may have contributed to the Younger Dryas abrupt cold interval 12,000 years ago; (ii) glacial climate may allow multiple states supported by feedbacks between sea ice and ocean circulation, with Dansgaard-Oeschger abrupt warming cycles being jumps between them; (iii) the disparity between rates of annual maximum (March) and annual minimum (September) sea ice extent retreat during recent decades may be due to coastline geometry; (iv) due to the impact of cloud simulation errors on Arctic sea ice, global climate model simulations of present-day sea ice conditions may agree less well than previous studies have suggested; (v) the possibility of a "tipping point" as Arctic sea ice recedes may be unlikely in the near future but likely in a more distant approach to perennially ice-free Arctic Ocean conditions. This work has direct implications regarding the cause of abrupt climate changes during the last glacial period, the characteristics of modern observed sea ice retreat, and the prediction of future changes in Arctic sea ice conditions.
