ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
General Circulation over Northern Hemisphere in 1993 and Their Impact on the Weather and Climate in China
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Abstract:
General circulation features over the Northern Hemisphere in 1993 are analysed. It is shown that the subtropical high over the west Pacific is stronger than normal,and extends to the,west,and at the same time moves southward continuosly.Meridinal circulation is dominant in the middle latitude of Asia in the spring and summer.The East Asia/Pacific teleconnection pattern is very stable.At 500hPa,the geopotential height over the Qinghai-Xizang plateau is higher than normal since March.The southern branch trough is weaker than normal. At 100hPa,the geopotential height in the low latitude is above normal, but that in the middle-high latitude is below normal.The location of the South Asia High is farther to the south than normal. A new El Nino event took place in the tropical Pacific in 1993. The anomaly of both the tropical Pacific and atmosphere circulation exerted a significant impact on the weather and climate in China.
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