ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 40 Issue 5 > 2014,40(5):642-648. DOI:10.7519/j.issn.1000-0526.2014.05.016 Prev Next
Analysis of Atmosphere Circulation and Weather in February 2014
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Abstract:
The main characteristics of the general atmospheric circulation in February 2014 are as follows: There were two polar vortex centres in the Northern Hemisphere and both of them are stronger than normal. The atmospheric circulation represents a four wave pattern over the middle high latitudes. The northwestern Pacific subtropical high is weaker than normal and the south branch trough is more to the west than normal. The monthly mean temperature is -2.3℃, 0.6℃ lower than normal. The monthly mean precipitation amount is 17.5 mm, which is similar to the normal value. During this month, there is one nationwide cold wave process. Obvious rain and snow weathers are seen in the north of China, relieving the drought situation in the winter wheat area. The snow and rain processes are more in the south of China with a large range impacted, which makes many places suffer from cryogenic rain/snow weather and cold damages. Besides, three fog and haze processes appear in the middle and eastern part of China.
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