摘要
对河南省61个气象观测站1958—2013年的季降水量时间序列进行SEOF分析,研究河南省降水量主模态季节演变的时空变化特征,重点分析了前4个模态的时空分布特征。结果表明:前3个模态具有明显的年际变化和阶段性变化特征;第3模态为冬季旱(涝)-春季涝(旱)-夏季北部太行山涝(旱)、其他地区旱(涝)-秋季旱(涝)型,冬春两季模态为高度负相关关系,冬秋两季模态则为极显著的正相关关系;第4模态年际变化相对较小,但阶段性变化特征明显。
The observed seasonal rainfall data at 61 meteorological stations in Henan from 1958 to 2013 are used to analyze the spatial and temporalvariations of dominant modes in Henan based on Season-reliant Empirical Orthogonal Function（ SEOF） analysis. The first four modes are analyzed emphatically. The results show that the first three modes of drought and flood patterns have obvious characteristics of interannual variation and staged variation. The third mode in the northern Taihang Mountain areasis drought（ flood） in winterflood（ drought） in spring-flood（ drought） in summer,and in other areas is drought（ flood） in summer-drought（ flood） in autumn.The winter-spring mode hasa highly negative correlation,while the autumn-winter mode has a significant positive correlation. Compared with the first three modes,the interannual variation of the fourth mode is relatively small,but the staged change isdistinct.
作者
陈罗成
程芳芳
王纪军
CHEN Luocheng;CHENG Fangfang;WANG Jijun(Henan KeyLaboratory of Agrometeorological Ensuring and Applied Technique, China Meteorological Administration, Zhengzhou 450003, China;Forecast and Technology Department, Henan Meteorological Bureau, Zhengzhou 450003, China;Meteorological Bureau of Zhengzhou, Zhengzhou 450003, China;Henan Province Climate Center, Zhengzhou 450048, China)
出处
《华北水利水电大学学报（自然科学版）》
2018年第3期31-37,共7页
Journal of North China University of Water Resources and Electric Power：Natural Science Edition
基金
中国气象局农业气象保障与应用技术重点开放实验室项目(AMF201509)
"十三五"国家重点研发计划项目(2016YFA0601501
2017YFC0404401
2017YFA0605002
2016YFC0402405
2017YFC0404602)
关键词
旱涝时空特征
SEOF
降水量
主模态
季节演变
河南省
spatial-temperal character of flood and drought
SEOF
precipitation
dominate modes
seasonal evolution
Henan province
作者简介
陈罗成（1984-），男，河南洛阳人，助理工程师，硕士，从事气候与气候变化方面的研究。E-mail：clcouc@163．com。;通信作者：王纪军（1970-），男，河南洛阳人，教授级高级工程师，博士，从事气候与气候变化方面的研究。E-mail：wjj-wang@hotmail．com。
