ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Analysis on Synoptic and Climatic Features of Temperature Inversion Under Diff erent Conditions of Geographical Environment in Winter
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Abstract:
Three upper air sounding stations of Jilin Province, Changchun, Linjia ng, and Yanji, are located on middle plain, south mountain area, and east basin of the province, respectively. Temporal and spatial distribution characteristics , statistical characteristics, synoptic and climatic features, and causes of tem perature inversion occurring in the winter of Jilin Province are analyzed on the basis of the data from three stations mentioned above. Analysis results indicat e that (1) the inversion is of high frequency in the middle plain, median in the mountain area, and low in the east basin, but the frequency of severe inversion is on the opposite; (2) the inversion base often lies near the surface in the middle plain, below 400m in the mountain area, and below 200m in the basin; (3) the thickness of the severe inversion on surface is usually less than 1000m; ( 4) inversions in the plain and mountain area are mainly caused by radiation and subsidence, whileinversions in the basin can be caused by radiation and subside nce, or advection. The situation field characteristics of different inversions a re also studied.
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