南方涛动指数与热带大洋暖池的相关分析  

Correltion Analysis between Changes of Southern Oscillation Index and Tropical Ocean Warm Pool

作　　者：张小龙 张捷 王文波 同明伟 Zhang Xiao-long(Meteorological Bureau,Shaanxi Yan’an,Yanan,Shaanxi 716100)

机构地区：[1]延安市气象局,陕西延安716100 [2]新余市气象局,江西新余338001

出　　处：《农业灾害研究》2023年第11期234-236,共3页Journal of Agricultural Catastrophology

摘　　要：利用1982—2016年南方涛动指数和热带印度洋-太平洋海表面温度(Sea Surface Temperature,SST)的资料,分析了南方涛动指数和热带大洋暖池的年际变化特征,探讨了南方涛动指数与暖池面积和强度的相关关系,为南方涛动和热带大洋暖池的研究提供参考。结果显示:热带大洋暖池的面积和强度均呈上升趋势,趋势率分别为13.717网格数/年和0.007℃/年,并分别有26~28年、20~22年和28年、20年的周期变化;南方涛动也有上升趋势,趋势率为0.018/年,且有16—18年和7—8年的周期性变化;南方涛动指数与暖池面积当月同期负相关显著,南方涛动指数在4、5和7~11月对其后2~10个月的热带大洋暖池面积均有良好滞后负相关。In this paper,the annual variations of the Southern Oscillation Index and the Tropical Ocean Warm Pool were analyzed by using the data of the 1982~2016year Southern Oscillation Index and the SST of the Tropical Indian Ocean and Tropical Pacific.The correlation between the Southern Oscillation Index and the area and intensity of the Warm Pool were also discussed for the study of southern oscudes and tropical ocean warm pools.The results show,the area and the intensity of the Tropical Oceanic Warm Pool were increasing.The trend rates were 13.717 grid/a and 0.007 ℃/a respectively.The area and the intensity of the warm pool have periodic changes of 26~28 a,20~22 a and 28 a,20 a respectively.The Southern Oscillation Index had an upward trend with a trend rate of 0.018/a,with periodic changes of 16~18 a and 7~8 a.The Southern Oscillation Index was negatively correlated with the warm pool area in the same month.The Southern Oscillation Index in April,May and July to November had a good lag negative correlation with the area of the Tropical Ocean Warm Pool for the next 2~10 months.

关 键 词：南方涛动指数 暖池面积 暖池强度 相关分析 

分 类 号：P733.1[天文地球—物理海洋学]