安徽农业科学2017，Vol.45Issue(11)：164-167,4.
热带海温的时空变化及其与我国降水的关系
Spatiotemporal Variation of Tropical SST and Its Relationship with Precipitation in China
洛桑旺姆 1达琼 1赤桑单吉 1拉珍1
作者信息
- 1. 西藏自治区山南市气象局,西藏山南 856100
- 折叠
摘要
Abstract
Using the NOAA / NASA sea surface temperature extension reconstruction data and the national station observation data from 1979 to 2014,starting from the annual average sea surface temperature(SST) of equator,the temporal and spatial characteristics of tropical SST and the effect of Indian Ocean-Pacific SST on the annual precipitation in China were analyzed by the empirical orthogonal function (EOF) method.The results showed that the annual average SST in the tropical region was 26 ℃ from 1979 to 2014,and the warm zone of SST was mainly concentrated in the equatorial region of the Indian Ocean and the western Pacific.The tropical SST anomalies were characterized by the fact that the first eigenvector field was consistent with the same area in the Indian Ocean SST,and the Pacific SST was weak El Ni(n)o (La Ni(n)a).The time coefficient and the annual precipitation were mainly positive correlation in Xinjiang,Tibet,Qinghai,Gansu and Hetao area.The second eigenvector field was El Ni(n)o (La Ni(n)a) in the Pacific SST,and the Indian Ocean SST was characterized by dipole type.There was a significant positive correlation between time coefficient and annual precipitation in Tibet and the middle reaches of the Yellow River,and significant negative correlation between the eastern part of the Northeast and the south of the Yangtze River.The third eigenvector field was weak El Ni(n)o (La Ni(n)a) in the Pacific SST,and the Indian Ocean SST was the north-south type,there was significant negative correlations between time coefficient and annual precipitation in Tibet,Xinjiang,Fujian and the northwest part of the northeast.关键词
热带海温/时空变化/降水/偶极子/厄尔尼诺Key words
Tropical SST/Spatiotemporal variation/Precipitation/Dipole/El Ni(n)o分类
农业科技引用本文复制引用
洛桑旺姆,达琼,赤桑单吉,拉珍..热带海温的时空变化及其与我国降水的关系[J].安徽农业科学,2017,45(11):164-167,4.
