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Analysis of linkage between NDVI variability in Tibetan Plateau and South Asian summer monsoon
Author(s): 
Pages: 273-278
Year: Issue:  3
Journal: Journal of Chengdu University Of Information Technology

Keyword:  青藏高原植被变化南亚夏季风;
Abstract: 利用1982年1月-2001年12月青藏高原植被归一化指数(NDVI)和NCEP/NCAR再分析月平均资料,应用相关分析、奇异值分解(SVD)和经验正交分解(EOF)的方法,分析了青藏高原冬季的NDVI变化与南亚夏季风的关系.通过分析表明,高原植被与南亚地区850hPa纬向风场和纬向风垂直切变(U850hPa-U200hPa)有比较好的正相关关系.用纬向风垂直切变EOF分析的第一特征向量对应的时间系数定义一个南亚夏季风指数(EOFI),该系数与高原冬季NDVI相关较好,而且能较好地反映南亚夏季风的变化.
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