摘要
利用湿润指数对开封市1981—2010年连续30年的气候资料进行分析,开封市这30年的气候以半干旱为主,湿润指数围绕0.50这一干湿分界指标呈现明显上下波动的趋势.一年当中只有7月和8月两个月份属于湿润期,而从10月到次年6月基本为干旱期,冬、春、秋三季属于半干旱气候,只有夏季属于湿润期,水分收入主要集中在夏季.
The 30 years consecutive climate datas of Kaifeng during 1981—2010 were analyzed based on humidity index.It was found that Kaifeng is mainly with semiarid climate,and the humidity index was around 0.50.This indicator for dividing dry and wet showed obviously fluctuate trend.Only July and August of the year belong to wet period,while the period from October to June of the following year is basically dry climate.Kaifeng in winter,spring and autumn is mainly dry climate,the wet period only in summer.The moisture income of kaifeng mainly concentrates in the summer.
出处
《河南科学》
2012年第4期488-491,共4页
Henan Science
基金
河南省气象局气象科学技术研究项目资助(Z201213)
关键词
湿润指数
开封市
干旱
湿润
特征
humidity index
Kaifeng
drought
moist
characteristics
