Pre-monsoon zonal wind Index over Tibetan Plateau and sub-seasonal Indian summer monsoon rainfall variability

被引：8
|
作者：
Dugam, S. S. [1 ]
Bansod, S. D. [1 ]
Kakade, S. B. [1 ]
机构：
[1] Indian Inst Trop Meteorol, Pune 411008, Maharashtra, India
来源：
GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷
关键词：
EURASIAN SNOW COVER; LARGE-SCALE CIRCULATION; HEAT-SOURCES; SURROUNDING AREAS; ANOMALIES; PRECIPITATION; CLIMATE; MASS;
D O I：
10.1029/2009GL038207
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
In this paper, by using the Principal Component Analysis (PCA) technique monthly zonal wind indices over Tibetan Plateau (25 degrees N-45 degrees N, 75-105 degrees E) (TP) at 200 hPa have been constructed for the period 1948-2006. These indices are referred as Tibetan Zonal Wind Index (TZWI). The relationship between the TZWI and Indian summer monsoon rainfall on monthly basis has been studied by the correlation analysis. From the analysis, it is observed that pre-monsoon months (April and May) of TZWI show the significant inverse relationship with June and July rainfall over India respectively. The study may be useful for forecasting rainfall activity in June and July months, which are crucial months from the agricultural point of view. Citation: Dugam, S. S., S. D. Bansod, and S. B. Kakade (2009), Pre-monsoon zonal wind Index over Tibetan Plateau and sub-seasonal Indian summer monsoon rainfall variability, Geophys. Res. Lett., 36, L11809, doi:10.1029/2009GL038207.
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页数：4
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