Interannual and long-term variability in the North Atlantic Oscillation and Indian Summer monsoon rainfall

被引:1
作者
S. S. Dugam
S. B. Kakade
R. K. Verma
机构
[1] Indian Institute of Tropical Meteorology,
来源
Theoretical and Applied Climatology | 1997年 / 58卷
关键词
India; Climate Change; Waste Water; Water Pollution; Opposite Phasis;
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摘要
The interannual and decadal scale variability in the North Atlantic Oscillation (NAO) and its relationship with Indian Summer monsoon rainfall has been investigated using 108 years (1881–1988) of data. The analysis is carried out for two homogeneous regions in India, (Peninsular India and Northwest India) and the whole of India. The analysis reveals that the NAO of the preceding year in January has a statistically significant inverse relationship with the summer monsoon rainfall for the whole of India and Peninsular India, but not with the rainfall of Northwest India. The decadal scale analysis reveals that the NAO during winter (December–January–February) and spring (March–April–May) has a statistically significant inverse relationship with the summer monsoon rainfall of Northwest India, Peninsular India and the whole of India. The highest correlation is observed with the winter NAO. The NAO and Northwest India rainfall relationship is stronger than that for the Peninsular and whole of India rainfall on climatological and sub-climatological scales.
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页码:21 / 29
页数:8
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