河南汛期暴雨时空分布特征及成因分析  

Distribution and Cause Analysis of the Flood Season Rainstorm in Henan Province

作　　者：侯春梅[1] 陈忠民[2] 康雯瑛 李新 郭学峰[1] 王美兰[5] 

机构地区：[1]河南省气象科技服务中心,郑州450003 [2]河南省气象科学研究所,郑州450003 [3]河南省气象学会,郑州450003 [4]平顶山市气象局,河南平顶山467001 [5]河南省气象培训中心,郑州450003

出　　处：《气象与环境科学》2008年第2期39-42,共4页Meteorological and Environmental Sciences

摘　　要：利用1990-2004年河南暴雨资料，分析了河南汛期暴雨空间分布特征，结果表明：豫西山区暴雨日最少，省内淮河流域暴雨日最多，豫北暴雨日次多。上述空间分布特征与地形、西太平洋副热带高压及低值系统影响有关。此外，河南暴雨从5月开始增多，7月最多，8月开始逐渐减少，这一时间分布特征与季风影响有关。河南汛期暴雨，多数发生在副高与高空槽及中低层低值系统相配合的情况下。By using the rainstorm data in the 1990 -2004 period, the distribution of the flood season rainstorm in Henan province is studied. The results show the flood season rainstorm in western Henan is the least and it is the most in the Huaihe River Basin and it is the second most in northern Henan. This distribution is related to the terrain, the West Pacific subtropical high and the low-value system. The flood season rainstorm in Henan province increases from May and reaches maximum in July, and it begins gradually reduced from August. This temporal distribution is in relation to the monsoon. The most flood season rainstorm in Henan province occurs with the subtropical high accompanying by the upper trough or the low-value system at low middle layer.

关 键 词：汛期暴雨 分布特征 地形影响 副热带高压 低值系统 季风 

分 类 号：P426.613[天文地球—大气科学及气象学]