Analysis of the Arctic sea ice conditions for 2011 at the onset of summer minimum
| Autor: | I. N. Mordvintsev, I. V. Alpatsky, Viatcheslav V. Rozhnov, N. G. Platonov |
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| Rok vydání: | 2012 |
| Předmět: |
Drift ice
Arctic sea ice decline Atmospheric Science geography geography.geographical_feature_category Antarctic sea ice Oceanography Arctic ice pack Physics::Geophysics Climatology Sea ice thickness Sea ice Cryosphere Environmental science Astrophysics::Earth and Planetary Astrophysics Sea ice concentration Physics::Atmospheric and Oceanic Physics |
| Zdroj: | Izvestiya, Atmospheric and Oceanic Physics. 48:1027-1038 |
| ISSN: | 1555-628X 0001-4338 |
| DOI: | 10.1134/s0001433812090125 |
| Popis: | The summer minimum of the Arctic sea ice area and extent have been estimated for 2011 using satellite passive microwave data. Compared with sea ice conditions during the satellite era (1979 to the present), the Arctic ice cap is close in size to the absolute minimum recorded in 2007. However, the spatial distribution of sea ice at the end of summer differed in 2007 and 2011 due to the atmospheric circulation effect on the position of the ice edge. It is shown that the decreasing rate of the ice cover has increased fourfold since 2003. A linear model has been developed for the global short-term prediction of Arctic ice conditions and historical reconstruction (until the middle of the 20th century, including the pre-satellite era) of summer ice conditions from the air temperature fields using the dimensionality reduction technique (principal component analysis) and canonical correlation analysis. The simulation results confirm the drastic change in the sea ice area at the end of summer after 2002. |
| Databáze: | OpenAIRE |
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