ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 31 Issue 12 > 2005,31(12):10-17. DOI:10.7519/j.issn.1000-0526.2005.12.002 Prev Next
Effect of Persistent Anomaly of Sea Surface Temperature in Tropical Ocean on Atmospheric Circulation in Early Summer in East Asia
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Abstract:
By the use of monthly mean sea surface temperature anomaly (SSTA) data and reanalys-is data from NCAR/NCEP, study of circulation transformation characteristics in the early summer (May or June) in East Asia under the conditions of persistent SSTA is conducted. The results indicate that in the warmer SSTA years, South Asia high and the subtropical high over western Pacific enhanced obviously, in contrast, in colder SSTA years. Subtropical westerly jet of the Northern Hemisphere over Asia-Europe land weakens and shifts northward clearly in warmer years, contemporary, temperature in lower troposphere over East Asia land is higher than or closes to normal, near surface temperature over the Tibetan Plateau is also above normal, while in colder years, temperature mentioned above is lower than or closes to normal, especially for temperature over the Plateau in May. It suggests that persistent SSTA are of great influence to seasonal transitions for East Asia in early summer.
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