Analysis on Similarity Characteristics of 4 Heavy Rainstorms of Regional Station near FAST

作者：Qixue PAN,Yaling XIE,Yidong MO,Yang CHEN

摘要：Based on routine data of MICAPS system and data of regional automatic station,characteristics of similar environmental field for 4 heavy rainstorms of regional station in Luodian County near FAST in summer were analyzed.It was found that 4 heavy rainstorms of regional station had internal similarity:it maintained high-altitude situation of"high in west and low in east"from Lake Baikal to North China;the Western Pacific subtropical high was zonal;ridge line of subtropical high was near 15°N;θse at 850 hPa reached certain index value,showing that air mass had extremely strong warm and humid characteristics.Under common influence of high-altitude trough,low-value system at low layer and weak cold air,heavy rainstorm occurred.

发文机构：Qiannan Meteorological Bureau Pingtang Meteorological Bureau

关键词：FASTRegionalautomaticstationHeavyrainstorm

分类号： P45[天文地球—大气科学及气象学]