Antarctic Sea Ice Variability in the Southern Ocean-Climate System

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Publisher : National Academies Press
ISBN 13 : 0309456002
Total Pages : 83 pages
Book Rating : 4.3/5 (94 download)

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Book Synopsis Antarctic Sea Ice Variability in the Southern Ocean-Climate System by : National Academies of Sciences, Engineering, and Medicine

Download or read book Antarctic Sea Ice Variability in the Southern Ocean-Climate System written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-04-24 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sea ice surrounding Antarctica has increased in extent and concentration from the late 1970s, when satellite-based measurements began, until 2015. Although this increasing trend is modest, it is surprising given the overall warming of the global climate and the region. Indeed, climate models, which incorporate our best understanding of the processes affecting the region, generally simulate a decrease in sea ice. Moreover, sea ice in the Arctic has exhibited pronounced declines over the same period, consistent with global climate model simulations. For these reasons, the behavior of Antarctic sea ice has presented a conundrum for global climate change science. The National Academies of Sciences, Engineering, and Medicine held a workshop in January 2016, to bring together scientists with different sets of expertise and perspectives to further explore potential mechanisms driving the evolution of recent Antarctic sea ice variability and to discuss ways to advance understanding of Antarctic sea ice and its relationship to the broader ocean-climate system. This publication summarizes the presentations and discussions from the workshop.

Southern Ocean-sea-ice Interaction

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)

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Book Synopsis Southern Ocean-sea-ice Interaction by : D. G. Martinson

Download or read book Southern Ocean-sea-ice Interaction written by D. G. Martinson and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sea Ice

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Publisher : John Wiley & Sons
ISBN 13 : 1118778383
Total Pages : 666 pages
Book Rating : 4.1/5 (187 download)

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Book Synopsis Sea Ice by : David N. Thomas

Download or read book Sea Ice written by David N. Thomas and published by John Wiley & Sons. This book was released on 2017-03-06 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 20 years the study of the frozen Arctic and Southern Oceans and sub-arctic seas has progressed at a remarkable pace. This third edition of Sea Ice gives insight into the very latest understanding of the how sea ice is formed, how we measure (and model) its extent, the biology that lives within and associated with sea ice and the effect of climate change on its distribution. How sea ice influences the oceanography of underlying waters and the influences that sea ice has on humans living in Arctic regions are also discussed. Featuring twelve new chapters, this edition follows two previous editions (2001 and 2010), and the need for this latest update exhibits just how rapidly the science of sea ice is developing. The 27 chapters are written by a team of more than 50 of the worlds’ leading experts in their fields. These combine to make the book the most comprehensive introduction to the physics, chemistry, biology and geology of sea ice that there is. This third edition of Sea Ice will be a key resource for all policy makers, researchers and students who work with the frozen oceans and seas.

The Role of the Southern Ocean/Sea Ice Interaction in Global Climate Change

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Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (228 download)

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Book Synopsis The Role of the Southern Ocean/Sea Ice Interaction in Global Climate Change by : Douglas G. Martinson

Download or read book The Role of the Southern Ocean/Sea Ice Interaction in Global Climate Change written by Douglas G. Martinson and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seasonal sea ice field of the Southern Ocean strongly modulates climate through its insulating effect and high albedo. Consequently, it plays a significant role in global climate and must be adequately parameterized for inclusion in large-scale circulation models attempting to predict the nature of global change. Recent field studies and modeling work show that the ice field is highly sensitive to the static stability and vertical fluxes in the Southern Ocean water column. Given the marginal stability and strong fluxes of the present-day water column, relatively small changes in the ocean/atmosphere may lead to significant changes in the stability or fluxes and thus the nature of the sea ice cover. These interactions link the local- and regional-scale processes to the global-scale processes, forming a Southern Ocean/climate feedback loop. The local-scale processes operate at sub-grid scales in most climate models; therefore the results of a local process-oriented model are reviewed to examine the nature of the local-regional interactions which are critical to this system. The model scalings, which describe the system parameter dependence, indicate the direction and magnitude of change of the key external parameters which will drive the system toward a more stable or more unstable state. They also allow a computationally efficient means of monitoring the key elements of the ocean/sea ice system in large-scale models. The main external parameters include: (1) depth of the pycnocline; (2) ratio of heat to salt through the pycnocline; (3) strength of the pycnocline; and (4) magnitude of atmospheric cooling. The divergence of the ice field also plays an important role.

Air-Ice-Ocean Interaction

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Publisher : Springer Science & Business Media
ISBN 13 : 0387783350
Total Pages : 218 pages
Book Rating : 4.3/5 (877 download)

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Book Synopsis Air-Ice-Ocean Interaction by : Miles McPhee

Download or read book Air-Ice-Ocean Interaction written by Miles McPhee and published by Springer Science & Business Media. This book was released on 2008-06-04 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: At a time when the polar regions are undergoing rapid and unprecedented change, understanding exchanges of momentum, heat and salt at the ice-ocean interface is critical for realistically predicting the future state of sea ice. By offering a measurement platform largely unaffected by surface waves, drifting sea ice provides a unique laboratory for studying aspects of geophysical boundary layer flows that are extremely difficult to measure elsewhere. This book draws on both extensive observations and theoretical principles to develop a concise description of the impact of stress, rotation, and buoyancy on the turbulence scales that control exchanges between the atmosphere and underlying ocean when sea ice is present. Several interesting and unique observational data sets are used to illustrate different aspects of ice-ocean interaction ranging from the impact of salt on melting in the Greenland Sea marginal ice zone, to how nonlinearities in the equation of state for seawater affect mixing in the Weddell Sea. The book’s content, developed from a series of lectures, may be appropriate additional material for upper-level undergraduates and first-year graduate students studying the geophysics of sea ice and planetary boundary layers.

Antarctic Sea Ice Variability in the Southern Ocean-Climate System

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Author :
Publisher : National Academies Press
ISBN 13 : 0309456037
Total Pages : 83 pages
Book Rating : 4.3/5 (94 download)

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Book Synopsis Antarctic Sea Ice Variability in the Southern Ocean-Climate System by : National Academies of Sciences, Engineering, and Medicine

Download or read book Antarctic Sea Ice Variability in the Southern Ocean-Climate System written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-03-24 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sea ice surrounding Antarctica has increased in extent and concentration from the late 1970s, when satellite-based measurements began, until 2015. Although this increasing trend is modest, it is surprising given the overall warming of the global climate and the region. Indeed, climate models, which incorporate our best understanding of the processes affecting the region, generally simulate a decrease in sea ice. Moreover, sea ice in the Arctic has exhibited pronounced declines over the same period, consistent with global climate model simulations. For these reasons, the behavior of Antarctic sea ice has presented a conundrum for global climate change science. The National Academies of Sciences, Engineering, and Medicine held a workshop in January 2016, to bring together scientists with different sets of expertise and perspectives to further explore potential mechanisms driving the evolution of recent Antarctic sea ice variability and to discuss ways to advance understanding of Antarctic sea ice and its relationship to the broader ocean-climate system. This publication summarizes the presentations and discussions from the workshop.

Climate Variability of Southern High Latitude Regions

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Publisher : CRC Press
ISBN 13 : 1000554597
Total Pages : 338 pages
Book Rating : 4.0/5 (5 download)

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Book Synopsis Climate Variability of Southern High Latitude Regions by : Neloy Khare

Download or read book Climate Variability of Southern High Latitude Regions written by Neloy Khare and published by CRC Press. This book was released on 2022-04-07 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to provide a comprehensive overview of climate change–related investigations carried out by Indian researchers through initiatives in southern high latitude regions. It explains climate variability over the Southern Ocean and Antarctica; air, sea, ice, and atmosphere interactions; and the impact of climate variability on sea ice and the polar atmosphere. The data were gathered at two Indian research bases, Maitri and Bharti, which are ideal sites to study and understand climatic evolution in Antarctic in the past and recent changes. This book helps to understand climatological perspectives and to evaluate some of the most pressing issues in the south polar region. FEATURES Highlights the achievements of India in the contemporary field of Antarctic climatology Presents four decades of research by Indian scientists in Antarctica, which is now shared for the first time with the global community Includes case studies on climatological and environmental conditions of natural archives to shed light on climate scenarios in the Southern Ocean and Antarctic regions Covers various aspects of climate variability and induced air-sea-ice-atmosphere interactions This book is edited by one of the top scientists and researchers of India in the field of paleoclimatology, and the contributors are experts in the Antarctic region.

Southern Ocean Sea Ice - Boundary Layer Interaction

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)

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Book Synopsis Southern Ocean Sea Ice - Boundary Layer Interaction by : P. Lemke

Download or read book Southern Ocean Sea Ice - Boundary Layer Interaction written by P. Lemke and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ocean, Ice, and Atmosphere

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Publisher : American Geophysical Union
ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Ocean, Ice, and Atmosphere by : Stanley S. Jacobs

Download or read book Ocean, Ice, and Atmosphere written by Stanley S. Jacobs and published by American Geophysical Union. This book was released on 1998-02-04 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this latest oceanology volume of the Antarctic Research Series, polar scientists describe and model air-sea and ice-ocean interactions, the formation and chemistry of deep and bottom waters, regional circulations, tidal heights and currents, ocean bathymetry, interannual variability and the Antarctic Slope Front.

Antarctic Sea Ice

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Publisher : American Geophysical Union
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Antarctic Sea Ice by : Martin O. Jeffries

Download or read book Antarctic Sea Ice written by Martin O. Jeffries and published by American Geophysical Union. This book was released on 1998-02-04 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Antarctic Research Series, Volume 74. In a 1971 Scientific Committee on Antarctic Research report that reviewed polar contrasts in sea ice, Lyn Lewis and Willy Weeks made the following observation: "People who study sea ice in the Arctic Basin are commonly asked if they have ever studied ice in Antarctica, and they answer 'why bother, it's the same old stuff." Noting this was "fortunately true to a considerable extent," they added "It is clear that future work will depend critically on the logistics facilities available to allow surface observations beyond the fast ice edge at all seasons of the year. Of almost equal importance will be the development of instruments and recording equipment suited for use in the polar environment" (Lewis, E. L., and W. F. Weeks, Sea Ice: Some Polar Contrasts, in, Antarctic Ice and Water Masses, edited by G. Deacon, Scientific Committee on Antarctic Research, Cambridge, 23-34, 1971). Lewis and Weeks made no specific mention of Earth-orbiting satellites, on which the first passive microwave sensor became operational in December 1972. Less than a year later the giant Weddell Polynya was observed for the first time. Perhaps more than any other development, this unexpected feature illustrated the potential to greatly expand our knowledge of sea ice through the application of spaceborne remote sensing. Simultaneously, it acted as a catalyst for a significant increase in the level of research.

Antarctic Sea Ice

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Publisher : American Geophysical Union
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Antarctic Sea Ice by : Michael P. Lizotte

Download or read book Antarctic Sea Ice written by Michael P. Lizotte and published by American Geophysical Union. This book was released on 1998-02-04 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Antarctic Research Series, Volume 73. The 4 million to 20 million square kilometers of sea ice that surrounds the Antarctic continent represents one of the largest and most dynamic ecosystems on Earth. This sea ice matrix provides a habitat for a wide variety of organisms, some of which live their entire lives within the ice while others are only occasional visitors. Large grazers, such as copepods and krill which come to the sea ice to feed, represent important links between sea ice biota and the pelagic environment. Unfortunately, because of the inherent difficulty of sampling such an environment, many aspects of this unique habitat are still poorly understood. The purpose of this volume is to present new information about this ecosystem so that its role within the Antarctic food-web (and as a sink for carbon dioxide) and its susceptibility to environmental changes can be better understood.

On Sea Ice

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Publisher : University of Alaska Press
ISBN 13 : 160223101X
Total Pages : 682 pages
Book Rating : 4.6/5 (22 download)

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Book Synopsis On Sea Ice by : Willy Weeks

Download or read book On Sea Ice written by Willy Weeks and published by University of Alaska Press. This book was released on 2010-06-15 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering more than seven percent of the earth’s surface, sea ice is crucial to the functioning of the biosphere—and is a key component in our attempts to understand and combat climate change. With On Sea Ice, geophysicist W. F. Weeks delivers a natural history of sea ice, a fully comprehensive and up-to-date account of our knowledge of its creation, change, and function. The volume begins with the earliest recorded observations of sea ice, from 350 BC, but the majority of its information is drawn from the period after 1950, when detailed study of sea ice became widespread. Weeks delves into both micro-level characteristics—internal structure, component properties, and phase relations—and the macro-level nature of sea ice, such as salinity, growth, and decay. He also explains the mechanics of ice pack drift and the recently observed changes in ice extent and thickness. An unparalleled account of a natural phenomenon that will be of increasing importance as the earth’s temperature rises, On Sea Ice will unquestionably be the standard for years to come.

Impact of the Southern Ocean Winds on Sea-ice - Ocean Interaction and Its Associated Global Ocean Circulation in a Warming World

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (69 download)

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Book Synopsis Impact of the Southern Ocean Winds on Sea-ice - Ocean Interaction and Its Associated Global Ocean Circulation in a Warming World by : Woo Geunn Cheon

Download or read book Impact of the Southern Ocean Winds on Sea-ice - Ocean Interaction and Its Associated Global Ocean Circulation in a Warming World written by Woo Geunn Cheon and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation discusses a linkage between the Southern Ocean (SO) winds and the global ocean circulation in the framework of a coarse-resolution global ocean general circulation model coupled to a sea-ice model. In addition to reexamination of the conventional linkage that begins with northward Ekman transport and extends to the North Atlantic (NA) overturning, the author investigates a new linkage that begins with the Southern Hemisphere (SH) sea-ice 0́3 ocean interaction perturbed by the anomalous SO winds and extends to the SH overturning, the response of the NA overturning, and the long-term baroclinic adjustment of the Antarctic Circumpolar Current (ACC). How the above two linkages will interact with each other in a warming world is also investigated. An interactive momentum flux forcing, allowing for the strength of momentum flux between atmosphere and sea ice to vary in response to the simulated sea-ice conditions, enhances wind-driven ice divergence to increase the fraction of leads and polynyas, which increases dense water formation, and thus intensifies convection. Within three experimental frameworks, this increased dense water consistently increases the Antarctic Bottom Water formation, which directly intensifies the SH overturning and indirectly weakens the NA overturning. As a result of the hemispheric change in overturning circulations, the meridional density gradient across the ACC appears to increase, ultimately increasing the baroclinic part of the ACC via an enhanced thermal wind shear. Subsequently, impacts of the poleward shifted and intensified SH subpolar westerly winds (SWWs) on the global ocean circulation are investigated in phases. When the SWWs are only shifted poleward, the effect of the anomalous winds is transmitted to the northern NA, decreasing both the NA overturning and the North Atlantic Deep Water (NADW) outflow. However, when the SWWs are shifted poleward and intensified, this effect is cut off by the intensified Deacon cell overturning, and is not transmitted to the northern NA, and instead increases the NADW outflow substantially. To sum up, with respect to the SO winds perturbed by the global warming, the SH overturning cell and the NADW outflow increase, leading to an increase in the volume transport of the ACC.

Atmospheric and Oceanic Fluid Dynamics

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Publisher : Cambridge University Press
ISBN 13 : 1139459961
Total Pages : 772 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis Atmospheric and Oceanic Fluid Dynamics by : Geoffrey K. Vallis

Download or read book Atmospheric and Oceanic Fluid Dynamics written by Geoffrey K. Vallis and published by Cambridge University Press. This book was released on 2006-11-06 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid dynamics is fundamental to our understanding of the atmosphere and oceans. Although many of the same principles of fluid dynamics apply to both the atmosphere and oceans, textbooks tend to concentrate on the atmosphere, the ocean, or the theory of geophysical fluid dynamics (GFD). This textbook provides a comprehensive unified treatment of atmospheric and oceanic fluid dynamics. The book introduces the fundamentals of geophysical fluid dynamics, including rotation and stratification, vorticity and potential vorticity, and scaling and approximations. It discusses baroclinic and barotropic instabilities, wave-mean flow interactions and turbulence, and the general circulation of the atmosphere and ocean. Student problems and exercises are included at the end of each chapter. Atmospheric and Oceanic Fluid Dynamics: Fundamentals and Large-Scale Circulation will be an invaluable graduate textbook on advanced courses in GFD, meteorology, atmospheric science and oceanography, and an excellent review volume for researchers. Additional resources are available at www.cambridge.org/9780521849692.

Ocean Circulation and Climate

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Publisher : Elsevier Inc. Chapters
ISBN 13 : 012805865X
Total Pages : 79 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Ocean Circulation and Climate by : David M. Holland

Download or read book Ocean Circulation and Climate written by David M. Holland and published by Elsevier Inc. Chapters. This book was released on 2013-10-22 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The polar oceans interact with both sea ice, formed in situ at the ocean surface, and land ice, flowing under gravity from the land onto the ocean surface. This ice–ocean interaction has profound consequences for the ocean and climate in a number of ways: a change in ocean surface albedo and surface energy balance where there is ice cover compared with open ocean, a change in global sea level when land ice flows into the ocean, and a transformation of water masses through melting or freezing of ice which subsequently influences the global conveyor belt. Another type of ice–ocean interaction, less well understood, is that between marine permafrost at the seafloor and the overlying ocean waters. Collectively, we refer to sea ice, land ice, and marine permafrost as the marine cryosphere. In this chapter, we review current understanding of the interaction of the marine cryosphere with the global ocean and discuss emerging technologies to improve observations and numerical modeling of these interactions. Projections for the state of the marine cryosphere into the current century and beyond are reviewed.

Sea Ice

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Publisher : John Wiley & Sons
ISBN 13 : 0470756926
Total Pages : 419 pages
Book Rating : 4.4/5 (77 download)

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Book Synopsis Sea Ice by : David N. Thomas

Download or read book Sea Ice written by David N. Thomas and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sea ice, which covers up to 7% of the planet’s surface, is a major component of the world’s oceans, partly driving ocean circulation and global climate patterns. It provides a habitat for a rich diversity of marine organisms, and is an extremely valuable source of information in studies of global climate change and the evolution of present day life forms. Increasingly sea ice is being used as a proxy for extraterrestrial ice covered systems. Sea Ice provides a comprehensive review of our current available knowledge of polar pack ice, the study of which is severely constrained by the logistic difficulties of working in such harsh and remote regions of the earth. The book’s editors, Drs Thomas and Dieckmann have drawn together an impressive group of international contributing authors, providing a well-edited and integrated volume, which will stand for many years as the standard work on the subject. Contents of the book include details of the growth, microstructure and properties of sea ice, large-scale variations in thickness and characteristics, its primary production, micro-and macrobiology, sea ice as a habitat for birds and mammals, sea ice biogeochemistry, particulate flux, and the distribution and significance of palaeo sea ice. Sea Ice is an essential purchase for oceanographers and marine scientists, environmental scientists, biologists, geochemists and geologists. All those involved in the study of global climate change will find this book to contain a wealth of important information. All libraries in universities and research establishments where these subjects are studied and taught will need multiple copies on their shelves. David Thomas is at the School of Ocean Sciences, University of Wales, Bangor, UK. Gerhard Dieckmann is at the Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany

Sea Ice Simulation in the Southern Ocean Including Vertical Boundary Layer Interactions

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)

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Book Synopsis Sea Ice Simulation in the Southern Ocean Including Vertical Boundary Layer Interactions by : A. Stossel

Download or read book Sea Ice Simulation in the Southern Ocean Including Vertical Boundary Layer Interactions written by A. Stossel and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: