ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 47 Issue 12 > 2021,47(12):1555-1560. DOI:10.7519/j.issn.1000-0526.2021.12.011 Prev Next
Analysis of the September 2021 Atmospheric Circulation and Weather
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Abstract:
The main characteristics of the general atmospheric circulation in September 2021 are as follows. The polar vortex showed a singlepole pattern. The circulation presented a threewave pattern in middlehigh latitudes. The northwestern Pacific subtropical high extended remarkably more westward than normal. The monthly mean precipitation amount was 83.8 mm, which is 28.5% more than normal (65.2 mm). The monthly mean temperature was 18.2℃, 1.6℃ higher than normal. Four largerange heavy precipitation processes occurred over China, of which Southwest China, North China and Northeast China were caught by severe precipitation, and some local areas suffered from serious disasters. Four typhoons were generated over northwestern Pacific Ocean and the South China Sea, but none landed on China. The east of Southwest China, the east of Northwest China to North China, the Huanghuai Region and other places suffered from torrential rain and flood disasters. Autumn rain in West China came earlier than normal and were stronger. The meteorological droughtin Northwest China eased but continued in South China.〖JP〗 Periodic high temperatures occurred in the south of China with some areas experiencing drought.
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