Relationship between North Pacific atmospheric pressure variations and Indian Monsoon rainfall

Analysis of mean sea level pressure (1925 to 1988) over the North Pacific Ocean (NPP) for the winter period (November to March) revealed a significant correlation with Indian Monsoon rainfall during the later period. Its correlation coefficients (CC) for different periods (during 1951–1988) are significant at the 1% to 5% levels. The temporal stability of these CCs is examined using 11, 21 and 31 year sliding windows. NPP is seen to play an important role in the regression models as revealed by the relative significance of its partial regression coefficients. The regression models developed are seen to perform well for the independent period.