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| Zabolotskikh, Elizaveta V.; Mitnik, Leonid M.; Chapron, Bertrand. |
| A methodology, based on model simulations and neural networks inversion, is proposed to jointly retrieve sea surface wind speed, sea surface temperature, atmospheric water vapor content, cloud liquid water content, and total atmospheric absorption at 10.65GHz using Advanced Microwave Scanning Radiometer 2 measurements. In particular, estimation of the total atmospheric absorption at 10.65GHz, which can be done with high accuracy due to the not so strong influence of liquid water and especially water vapor, helps to refine a new filter to considerably reduce masking ocean areas for severe weather systems, characterized by high wind speeds and moderate atmospheric absorption, appropriate for studying winter extratropical cyclone and polar low systems. A... |
| Tipo: Text |
Palavras-chave: Satellite passive microwave; Weather filter; High winds; AMSR-2; Atmospheric absorption. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00166/27752/25943.pdf |
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| Zabolotskikh, Elizaveta V.; Gurvich, Irina A.; Chapron, Bertrand. |
| With the sea-ice decline over the eastern part of the Eurasian Arctic (EEA), polar mesocyclones (MCs) and their most intensive representatives-polar lows (PLs)-can occur over more open-water areas. Visible and infrared MODIS images, active and passive microwave spaceborne instruments, and ERA Interim reanalysis data are combined and used to analyze the synoptic situations and to infer the factors influencingMC appearance and evolution over the Kara Sea, the Laptev Sea, the East Siberian Sea, and the Chukchi Sea. In recent years, the Arctic more often loses its summer sea-ice cover, and PLs may more commonly emerge within open-water Eastern Arctic regions during fall and summer months. This conclusion is derived basing on the analysis of more than 150 MCs... |
| Tipo: Text |
Palavras-chave: Arctic; Geoscience; Mesoscale cyclones. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00358/46870/48388.pdf |
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