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Arctic sea ice reaches lowest extent in 2008, second lowest ever recorded
September 17, 2008
The Arctic sea ice cover appears to have reached its minimum extent for the year, the second-lowest extent recorded since satellite record-keeping began in 1979, according to the University of Colorado at Boulder's National Snow and Ice Data Center, or NSIDC. While slightly above the record-low minimum set on Sept. 16, 2007, this season further reinforces the strong negative trend in summertime sea ice extent observed over the past 30 years, according to NSIDC researchers. NSIDC will issue a press release at the beginning of October with full analysis of the possible causes behind this year's low ice conditions, particularly interesting aspects of the melt season, the conditions going into the winter growth season ahead, and graphics comparing this year to the long-term record. University of Colorado at Boulder

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Arctic Sea Ice Ecosystem
by Alexander Melnikov (Author)
The Arctic ocean is a major component of the world's atmospheric ocean system and within this ocean, sea ice is the key dominant environmental feature. This three to five metre thick perenial sea ice cover affects the magnitude of both heat and matter fluxes from the atmosphere and supports a tightly coupled biological community - the Arctic sea ice ecosystem. This work is dedicated to the study of the composition, structure and dynamics of the Arctic sea ice ecosystem. It considers the permanent Arctic sea ice cover as an integral steady-state ecological system. Detailed descriptions are given of time-scale characteristics, physical and chemical ice properties, and the species composition of sea-ice bio data. The ecological mechanisms which govern the ecosystem on both the vertical and...
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Arctic Sea Ice Decline: Observations, Projections, Mechanisms, and Implications (Geophysical Monograph)
by Eric T. Deweaver (Editor), Cecilia M. Bitz (Editor), L. Bruno Tremblay (Editor)
This volume addresses the rapid decline of Arctic sea ice, placing recent sea ice decline in the context of past observations, climate model simulations and projections, and simple models of the climate sensitivity of sea ice. Highlights of the work presented here include:
? An appraisal of the role played by wind forcing in driving the decline;
? A reconstruction of Arctic sea ice conditions prior to human observations, based on proxy data from sediments;
? A modeling approach for assessing the impact of sea ice decline on polar bears, used as input to the US Fish and Wildlife Service's decision to list the polar bear as a threatened species under the Endangered Species Act;
? Contrasting studies on the existence of a "tipping point", beyond which Arctic sea ice decline will...
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Scientific Value of Arctic Sea Ice Imagery Derived Products
by Committee on the Scientific Value of Arctic Sea Ice Imagery Derived Products (Author), Energy, and National Security Committee on Climate (Author), National Research Council (Author)
During the 1990s, a government program brought together environmental scientists and members of the intelligence community to consider how classified assets and data could be applied to further the understanding of environmental change. As part of the Medea program, collection of overhead classified imagery of sea ice at four sites around the Arctic basin was initiated in 1999, and two additional sites were added in 2005. Collection of images during the summer months at these six locations has continued until the present day. Several hundred unclassified images with a nominal resolution of 1 meter have been derived from the classified images collected at the 6 Arctic sites. To assist in the process of making the unclassified derived imagery more widely useful, the National...
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The Arctic Crusoe: A Tale of the Polar Sea or, Arctic Adventures on the Sea of Ice.
by Percy B. St. John (Author)
This book is a facsimile reprint and may contain imperfections such as marks, notations, marginalia and flawed pages.
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The sea of ice, or, The arctic adventurers.
by Percy B. (Percy Bolingbroke) St. John (Creator)
Title: The sea of ice, or, The arctic adventurers.
Author: St. John, Percy B. (Percy Bolingbroke)
Publisher: Gale, Sabin Americana
Description:
Based on Joseph Sabin's famed bibliography, Bibliotheca Americana, Sabin Americana, 1500--1926 contains a collection of books, pamphlets, serials and other works about the Americas, from the time of their discovery to the early 1900s. Sabin Americana is rich in original accounts of discovery and exploration, pioneering and westward expansion, the U.S. Civil War and other military actions, Native Americans, slavery and abolition, religious history and more.
Sabin Americana offers an up-close perspective on life in the western hemisphere, encompassing the arrival of the Europeans on the shores...
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Understanding Recent Variability in the Arctic Sea Ice Cover - Synthesis of Model Results and Observations
This thesis provides a continuation of the analysis of the diminishing sea ice trend in the Arctic Ocean by examining results from the NPS 1/12 degree pan-Arctic coupled ice-ocean model. While many previous studies have analyzed changes in ice extent and concentration, this research focuses on ice thickness as it gives a better representation of ice volume variability. The skill of the model is examined by comparing its ice thickness output to actual sea ice thickness data gathered during the last three decades. The model comparison is made against the most recently released collection of Arctic ice draft measurements conducted by U.S. Navy submarines between 1979 and 2000. The NPS model indicates an accelerated thinning trend in Arctic sea ice during the last decade. The validation of...
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Climate Change in Eurasian Arctic Shelf Seas: Centennial Ice Cover Observations (Springer Praxis Books / Geophysical Sciences)
by Ivan E. Frolov (Author), Zalmann M. Gudkovich (Author), Valery P. Karklin (Author), Evgeny G. Kovalev (Author), Vasily M. Smolyanitsky (Author)
In this book the eminent authors analyse the ice cover variability in the Arctic Seas during the 20th and early 21st centuries. In the first two chapters, they show that multi-year changes of the sea-ice extent in the Arctic Seas were formed by linear trends and long-term (climatic) cycles lasting about 10, 20 and 60 years. The structure of temporal variability of the western region (Greenland – Kara) differs significantly from the eastern region seas (Laptev and Chukchi). In the latter region, unlike the former area, relatively short-period cycles (up to 10 years) predominate. The linear trends can be related to a super-secular cycle of climatic changes over about 200 years. The most significant of these cycles, lasting 60 years, is most pronounced in the western region seas.
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After the Ice: Life, Death, and Geopolitics in the New Arctic
by Alun Anderson (Author)
An eye-opening look at the winners and losers in the high-stakes story of Arctic transformation, from nations to natives to animals to the very landscape itself The Arctic—like the canary in the coal mine—has reacted more quickly and dramatically to global warming than many had anticipated. Hundreds of scientists are urgently trying to predict just how the Arctic will change and how those changes will in turn affect the rest of the planet. But plenty of other people, driven by profit rather than data, are interested as well. The riches of the world’s last virgin territory have spurred the reawakening of old geopolitical rivalries. The United States, Canada, Russia, Norway, and the Danish territory of Greenland all control areas around the Arctic Ocean. We face a new era of oil...
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![Estimating the time of melt onset and freeze onset over Arctic sea-ice area using active and passive microwave data [An article from: Remote Sensing of Environment]](http://ecx.images-amazon.com/images/I/41SQKTKC4JL._SX120__PC__PE00_.jpg)
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Estimating the time of melt onset and freeze onset over Arctic sea-ice area using active and passive microwave data [An article from: Remote Sensing of Environment]
by G.I. Belchansky (Author), D.C. Douglas (Author), I.N. Mordvintsev (Author), P (Author)
This digital document is a journal article from Remote Sensing of Environment, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description: Accurate calculation of the time of melt onset, freeze onset, and melt duration over Arctic sea-ice area is crucial for climate and global change studies because it affects accuracy of surface energy balance estimates. This comparative study evaluates several methods used to estimate sea-ice melt and freeze onset dates: (1) the melt onset database derived from SSM/I passive microwave brightness temperatures (T"bs) using Drobot and Anderson's [J. Geophys. Res. 106 (2001) 24033] Advanced Horizontal Range...
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![Arctic sea ice trends and narwhal vulnerability [An article from: Biological Conservation]](http://ecx.images-amazon.com/images/I/51P1T5EY1VL._SX120__PC__PE00_.jpg)
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Arctic sea ice trends and narwhal vulnerability [An article from: Biological Conservation]
by K.L. Laidre (Author), M.P. Heide-Jorgensen (Author)
This digital document is a journal article from Biological Conservation, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description: Conservation measures related to global climate change require that species vulnerability be incorporated into population risk models, especially for those that are highly susceptible to rapid or extreme changes due to specialized adaptation. In the case of Arctic cetaceans, effects of climate change on habitat and prey availability have been subject to intense speculation. Climate perturbations may have significant impacts on the fitness and success of this group, yet measuring these parameters for...
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