下行短波辐射变化与厄尔尼诺的相关性——以秦岭淮河地区为例  

Correlation of the Downward Shortwave Radiation Changes and El Nino:A Case Study of Qinling-Huaihe Region

作　　者：崔晓临[1] 王倩 张帅[1] CUI Xiaolin;WANG Qian;ZHANG Shuai(School of Surveying and Mapping Science and Technology,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安科技大学测绘科学与技术学院,陕西西安710054

出　　处：《测绘地理信息》2021年第3期122-126,共5页Journal of Geomatics

基　　金：国家自然科学基金(51104116)。

摘　　要：选用地-气系统辐射产品中的地表下行短波数据分析秦岭淮河地区辐射分量时间变化,得到如下结果:地表下行短波辐射年际变化整体呈下降趋势,分别在2002年7月和2004年9月发生显著下降;结合海洋尼诺指数对下行短波辐射进行相关分析,研究结果表明,2000-2016年间下行短波辐射发生突变的时间与厄尔尼诺事件发生的时间具有高度一致性,且辐射突变时间基本发生于厄尔尼诺事件的初期。同时下行短波辐射通量在发生厄尔尼诺现象时显著下降,在发生拉尼娜现象时显著上升。The downward shortwave data on surface in radiation products of the earth-atmosphere system are used to a-nalyze the time variation of the radiation components in Qinling-Huaihe region. The results are as follows: The interannual variation of the downward shortwave radiation on surface shows a downward trend, with significant declines in July 2002 and September 2004, respectively. Correlation analysis of the downward shortwave radiation is carried out with the oceanic Nino index, and the research results show that the time of the sudden change of the downward shortwave radiation and the time of the El Nino event are highly consistent, and the time of the radiation sudden change basically occurs in the early stage of the El Nino event from 2000 to 2016. At the same time, the downward shortwave radiation flux decreases significantly when El Nino occurs, and it increases significantly when La Nina occurs.

关 键 词：下行短波辐射 厄尔尼诺事件 时间变化特征 突变分析 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置] P422[自动化与计算机技术—控制科学与工程]