The Pacific
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Pacific
Ocean is the largest ocean in the world. It covers nearly 28% of global surface
and of course larger than the land area of the globe. It stretches between Southern ocean in the
Deep South, to Asia, Australia and to major portions of western hemisphere. The
Sun shine over the Pacific and the clockwise (anticlockwise) sea gyrations in
Northern (Southern) hemisphere Pacific have an impact over global weather. The
western Pacific exhibits monsoonal winds and becomes the major cause for
rainfall In Asia. Similarly the heating
of western Pacific influences the weather pattern in India. The sea surface temperature anomaly and station
level pressure anomaly in the region between 5o N to 5o S
and 150o W to 120o W and more precisely between 160o
E to 150o W have a dramatic impact on Summer Monsoon Rainfall in
India. This tele connection was first
discovered by Sir Albert Walker.
Relatively strong intense heating in the far eastern portions of above
mentioned region in Pacific Ocean during this April 2012 may play a dramatic
role in Indian Summer Monsoon Rainfall [ISMR]. The delay in developing “Heat
Low” in Thar Desert region and far west desert / continental area may be
attributed to this effect. Hence monitoring of SOI and SST (NINO) anomaly in the
above mentioned region will help in prediction of ISMR.
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