ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 43 Issue 7 > 2017,43(7):894-900. DOI:10.7519/j.issn.1000-0526.2017.07.014 Prev Next
Analysis of the April 2017 Atmospheric Circulation and Weather
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Abstract:
The main characteristics of the general atmospheric circulation in April 2017 are as follows. Double polar vortex centers existed in the Northern Hemisphere, but weaker than usual. The circulation in Eurasian middlehigh latitude showed a fourwave pattern. The strength of Western Pacific subtropical high is stronger than that in normal years. While the south branch trough was almost equal to normal. The monthly mean temperature was 12.0℃, 1.0℃ higher than normal, and the monthly mean precipitation amount was 44.0 mm, which was 2% less than normal. One nationwide strong cold air process happened in this month. There were more precipitation weather events in southern China in this month, with three regional rainstorm processes seen. In addition, two blowing sand weather events happened in the northern China and hail disaster attacked some places of many provinces.
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