近30年河南省夏季地面水汽压演变特征及其与降水量的关系  

Evolution Characteristics of the Summer Surface Vapor Pressure and the Relation with Precipitation in Recent 30 Years in Henan Province

作　　者：刘园园[1,2] 周顺武[1] 王传辉[3] 吴裴裴 

机构地区：[1]中国气象局.河南省农业气象保障与应用技术重点开放实验室,郑州450003 [2]承德市气象局,河北承德067000 [3]安徽省气象局,合肥230061

出　　处：《气象与环境科学》2013年第2期37-41,共5页Meteorological and Environmental Sciences

基　　金：国家自然科学基金项目(41275095);中国气象局农业气象保障与应用技术重点开放实验室科研基金项目(AMF201109)资助

摘　　要：利用河南省49个地面气象台站近30 a(1979 2008年)的逐月地面水汽压资料,分析了近30 a来河南省夏季水汽压的演变特征,讨论了夏季地面水汽压与地面降水的关系。结果表明:河南省夏季水汽压和降水量在空间分布上都呈现出由西北向东南递增的特征;夏季地面水汽压和降水量空间分布主要呈现出全省一致型。通过Morlet小波分析发现,夏季水汽压存在着的准2 a和3～5 a的年际振荡,而夏季降水量存在准2 a和准6～7 a的年际振荡。M-K检验表明,夏季水汽压和降水量均在20世纪80年代中后期存在由少到多的突变。Using the monthly surface vapor pressure data of 49 meteorological stations in Henan province from 1979 to 2008,evolution characteristics of the summer vapor pressure are studied.The relation between the summer surface vapor pressure and precipitation is discussed.The results are as follows.The summer vapor pressure and precipitation distribution exhibit similar features,they are both showed increasing trend from the northwest to the southeast.The spatial distribution of the summer vapor pressure and precipitation are performance out overall consistent.Based on the Morlet wavelet,the summer vapor pressure has 2 years and 3 to 5 years notable interannual oscillations,while the summer precipitation has the cycle with 2 years and 6 to 7 years.The summer surface vapor pressure and precipitation show mutation from less to more in the late 1980s of the last century by M-K test.

关 键 词：夏季地面水汽压 降水 空间分布 年际变化 突变 

分 类 号：P468[天文地球—大气科学及气象学]