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.
出处
《气象与环境科学》
2008年第2期39-42,共4页
Meteorological and Environmental Sciences
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
flood season rainstorm
distribution
terrain influence
subtropical high
low-value system
monsoon
