ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 47 Issue 8 > 2021,47(8):1021-1028. DOI:10.7519/j.issn.1000-0526.2021.08.009 Prev Next
Analysis of the May 2021 Atmospheric Circulation and Weather
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
The main characteristics of the general atmospheric circulation in May 2021 is that the two polar vortex centers were in the Northern Hemisphere and stronger than usual. The circulation finished the transition from a threewave pattern to a fourwave pattern and the 500 hPa geopotential height presented the distribution of a fourwave pattern in middlehigh latitudes of Northern Hemisphere. The strength of Western Pacific subtropical high was stronger than that in normal years, and the South China Sea summer monsoon erupted in the sixth pentad. The monthly mean temperature was 16.9°C, 0.7°C higher than normal. The monthly mean precipitation amount was 74.8 mm, 8% more than normal. Six regional rainfall processes occurred in China this month. Meanwhile, several provinces were attacked by gales and hailstorm, including the tornadoes seen in Wuhan, Hubei Province and also that in Jiangsu Province, which led in economic losses and casualties to same degree. In addition, four dustsand events occurred in the northern part of China, making a wide range of impacts and being the most compared with such events in the same period since 2002. The drought maintained or developed in the provinces of Yunnan and Sichuan, but the drought condition in most parts of South China got relieved at the end of May.
Keywords:
Project Supported:
Clc Number:
Mobile website
