ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 50 Issue 6 > 2024,50(6):770-776. DOI:10.7519/j.issn.1000-0526.2024.051101 Prev Next
Analysis of the March 2024 Atmospheric Circulation and Weather
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Abstract:
The main characteristics of the general atmospheric circulation in March 2024 are as follows. There was one polar vortex center in the Northern Hemisphere, which was stronger than usual. The circulation in mid-high latitudes showed an anomalous four-wave pattern, and the Asian circulation was relatively flat and straight. The northern part of China was basically in a negative anomaly zone of the 500 hPa geopotential height field. The strength of Western Pacific subtropical high was stronger and more westward than in normal years, while the south branch trough was a little weaker than usual. The monthly mean temperature was 6.0℃ across China, which is 1.2℃ warmer than normal. The monthly mean precipitation amount was 24.0 mm, 18.4% less than in normal period (29.4 mm). However，the precipitation in the north of Inner Mongolia and the east of Northwest China was significantly more than that in normal years. During this month, one large-scale precipitation process occurred, and severe convection weather appeared frequently with three regional convection events with strong localized intensities. In addition, there were two cold air processes without causing large range of drop in temperature. Three sand-dust weather processes occurred in northern China, and the drought condition continued in winter and spring in the southwestern region of China.
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