ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 37 Issue 5 > 2011,37(5):639-644. DOI:10.7519/j.issn.1000-0526.2011.05.018 Prev Next
Analysis of the February 2011 Atmospheric Circulation and Weather
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Abstract:
The following are the main characteristics of the general atmospheric circulation in February 2011. There is a stronger polar vortex center in the Northern Hemisphere than normal years. The circulation presents a four wave pattern in middle high latitudes. The subtropical high is weaker than normal years. The south branch trough is slightly weaker than normal years. The monthly mean precipitation is 11.4 mm, and is 4.9 mm less than normal. Northern China is under control by ridge in early and mid February. In North China and Huang Huai Plain etc., drought increases until the end of the month to get relief. The monthly mean temperature is -1.2 ℃, and is 1.7 ℃ higher than normal. There were two cold air processes affecting most areas of China. Part of the middle and east of China suffered from fog disasters.
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