Antarctic Sea Ice Cover 1973 1976
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Total Pages | : 228 |
Release | : 1983 |
Genre | : Microwave remote sensing |
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Data from the Electrically Scanning Microwave Radiometer (ESMR) on the Nimbus 5 satellite are used to determine the extent and distribution of Antarctic sea ice. The characteristics of the southern ocean, the mathematical formulas used to obtain quantitative sea ice concentrations, the general characteristics of the seasonal sea ice growth/decay cycle and regional differences, and the observed seasonal growth/decay cycle for individual years and interannual variations of the ice cover are discussed. The sea ice data from the ESMR are presented in the form of color-coded maps of the Antarctic and the southern oceans. The maps show brightness temperatures and concentrations of pack ice averaged for each month, 4-year monthly averages, and month-to-month changes. Graphs summarizing the results, such as areas of sea ice as a function of time in the various sectors of the southern ocean are included. The images demonstrate that satellite microwave data provide unique information on large-scale sea ice conditions for determining climatic conditions in polar regions and possible global climatic changes.
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Total Pages | : 206 |
Release | : 1983 |
Genre | : Sea ice |
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Author | : |
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Total Pages | : 220 |
Release | : 1983 |
Genre | : Microwave remote sensing |
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Author | : National Academies of Sciences, Engineering, and Medicine |
Publisher | : National Academies Press |
Total Pages | : 83 |
Release | : 2017-04-24 |
Genre | : Science |
ISBN | : 0309456002 |
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.
Author | : Claire L. Parkinson |
Publisher | : |
Total Pages | : 316 |
Release | : 1987 |
Genre | : Microwave remote sensing |
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Author | : |
Publisher | : |
Total Pages | : 320 |
Release | : 1987 |
Genre | : Microwave remote sensing |
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Author | : Ed Zwally |
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Total Pages | : 206 |
Release | : 1983 |
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Author | : |
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Total Pages | : 228 |
Release | : 1983 |
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Author | : H. Jay Zwally |
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Total Pages | : 206 |
Release | : 1976 |
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Author | : Per Gloersen |
Publisher | : |
Total Pages | : 324 |
Release | : 1992 |
Genre | : Microwave remote sensing |
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