摘要
根据1955—2007年秦岭南北59个气象站点资料,分析了厄尔尼诺现象对秦岭南北降水的影响,比较秦岭南北降水对厄尔尼诺现象的响应及致灾效应.研究表明:秦岭南北降水对厄尔尼诺现象响应的趋势基本一致,但幅度有别;厄尔尼诺年秦岭以北(岭北)降水减少幅度大于秦岭以南(岭南),而厄尔尼诺次年岭南降水增加量大于岭北;秦岭分界作用明显,全球变化下秦岭南北降水差值越来越大,厄尔尼诺现象在一定程度上加剧了这种差距.
According to the meteorological data from 1955 to 2007 in northern and southern Qinling Mountains, the impact of El Nino on the precipitation is analyzed. The precipitation difference between northern and southern Qinling Mountains in response to the El Nino phenomenon is also compared, as well as its hazard effect. The result shows that the precipitation changes in response to El Nino between both sides are similar in trends but different in range. In the El Nino year,the precipitation of northern mountain decreases greater than that of southern, while the precipitation in Southern increases larger than that in Northern in the following year. The Qinling Moutains has an obvious role as the boundary of northern and southern. The precipitation margin in the southern and northern Qinling Moutains is becoming larger under the global change, with El Nino phenomenon making this gap wider.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第5期92-96,共5页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(40871052)
关键词
厄尔尼诺
降水变化
致灾效应
秦岭南北
El Nino
precipitation change
hazard effect
the southern and northern Qinling Moutains
