山西农业大学学报（自然科学版）2012，Vol.32Issue(4)：379-384,6.
山西北部一次罕见的秋季连阴雨诊断分析
Analysis of a Rare Continuous Autumn Rain in Northern Shanxi Province
李效珍 1贾利芳 1李子龙 1何正梅1
作者信息
- 1. 山西省大同市气象局,山西大同037010
- 折叠
摘要
Abstract
The circulation process and physical features of a rare continuous autumn rain occurring in northern Shanxi province was analyzed in this paper. During this period, the large-scale circulation over Eurasia was relatively stable, a stable blocking anticyclone maintained nearby the Ural Mountains, the subtropical high pressure of the west Pacific was extraordinary strong, the short-wave trough was continuously split up to move toward east in mid-latitudes of Asian, 700 and 850 hpa shear lines were established frequently. Because the subtropical high pressure of the west Pacific exceptionally inclined to north west, the peripheral high and low altitude jet stream transferred sufficient water-vapor to Shanxi. When Ural blocking high established, the north cold air slided before the keel, the low vortexes were formed in the Lake Baikal, and the small splitting trouph at its bottom shifted down to south, the cold and warm airs con-vergeed formed the long time continuous rain weather in north Shanxi. When the blocking high weakened , the high-pressure ridge shifted from the Lake Baikal to Xinjiang, the subtropical high-pressure moved southeast. The sky was controlled by northwest gas flow, and the continuous rain weather ended.关键词
秋季连阴雨/环流特征/物理量场特征Key words
Autumn continuous rain/Circulation pattern/Physical vector field feature分类
农业科技引用本文复制引用
李效珍,贾利芳,李子龙,何正梅..山西北部一次罕见的秋季连阴雨诊断分析[J].山西农业大学学报（自然科学版）,2012,32(4):379-384,6.
