Synoptic aspects of the catastrophic flood formation in the northeast of Australia during extreme La Nina 2010-2011

Semenov, E.K.; Platonov, V.S.; Sokolikhina, E.V.

Авторы: Semenov E.K., Platonov V.S., Sokolikhina E.V.
Журнал: Russian Meteorology and Hydrology
Том: 37
Номер: 2
Год издания: 2012
Издательство: Allerton Press Inc.
Местоположение издательства: United States
Первая страница: 90
Последняя страница: 97
DOI: 10.3103/S1068373912020033
Аннотация: A synoptic mechanism of the formation of atmospheric circulation anomalies over the tropics of the Indian and Pacific oceans observed during the La Nia 2010-2011 culmination is considered using the daily data of the NCEP/NCAR reanalysis. It was established that the most destructive flood during the whole modern history of Australia was caused by the unprecedented activity of the tropical cyclogenesis in the circulation system of the Australian summer monsoon. The tropical cyclones affected in turn the monsoon regions of Australia both from the Indian Ocean through the system of the equatorial zone of westerlies and from the Pacific Ocean through the system of the eastern trade wind. The Pacific trade wind during the Australian flood was maximally developed and the South Pacific high was shifted considerably from the coast of Peru and Chile to the center of the ocean. It is demonstrated that the maximum values of negative SST anomalies were observed not in the east of the Pacific Ocean as in the case of the "canonical" La Nia but they were shifted significantly to the west to the line of the date change. All this enables to refer the extreme La Nia 2010-2011 to La Nia of Modoki type.
Добавил в систему: Платонов Владимир Сергеевич

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Synoptic aspects of the catastrophic flood formation in the northeast of Australia during extreme La Nina 2010-2011статья

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