青藏高原地面加热场强度与ENSO循环的关系  

The Relationship between the Intensity of Surface Heating Fields over the Qinghai-Xizang Plateau and ENSO Cycle

作　　者：李栋梁[1] 何金海[1] 汤绪[2] 雷小途[3] 侯依玲[3] 

机构地区：[1]南京信息工程大学 [2]上海市气象局,上海200030 [3]上海市气候中心,上海200030

出　　处：《高原气象》2007年第1期39-46,共8页Plateau Meteorology

基　　金：国家自然科学基金重点项目(40633018);国家自然科学基金项目(40475038;40665002);上海市气象局"副热带季风研究"专项共同资助

摘　　要：分析了近50年青藏高原地面加热场强度距平指数、Ni^no C区海温指数、SOI和印缅槽指数的统计相关,结果表明,ENSO指数和印缅槽指数在月、季时间尺度上具有很好的持续性。青藏高原地面加热场强度距平指数和印缅槽指数与Ni^no C区海温指数存在很好的正相关,与SOI有显著的负相关。由此建立了一个通过印缅槽将ENSO循环与青藏高原地面加热场联系起来,解释西北区东部及河套干旱形成的概念模型。Using the data of intensity departure index of surface heating fields over Qinghai-Xizang Plateau, the indexes of the SST of the Nino C, SOI and the intensity of the India-Burma trough in recent 50 years, The result shows that there is a good persistence for index of ENSO and the intensity of the India-Burma trough in month and season time scales. It has a good positive relation that the intensity departure index of surface heating fields over Qinghai-Xizang Plateau and index of the intensity of the India-Burma trough with index of the SST of the Nino C, but it has a good negative with SOI. A concept model has been get up by above research, this model was contacted that ENSO circulation and surface heating fields over Qinghai-Xizang Plateau by India-Burma trough that explain the dry of the northwest eastern region and the Hetao and its vicinity area.

关 键 词：青藏高原 地面加热场强度 ENSO 印缅槽 

分 类 号：P434.5[天文地球—大气科学及气象学]