per 100 years during the period 1901-2007. Also, as with mean temperature, there has been
an acceleration in trends of both maximum and minimum temperatures during 1971-2007. At
the regional level, the homogenous regions
11
of east coast, west coast and the peninsula show
an increasing trend in the frequency
12
of hot days but northern India (north of 22 degree N)
does not. With respect to the frequency of cold days, however, all seven homogenous regions
show a decreasing trend (in the frequency of cold days).
With regard to precipitation, Indian monsoon rainfall from 1871-2009 shows only a slight
negative trend. But there is significant spatial variation in these trends over this period.
Also, there is an increase in extreme rainfall events and their intensities (GoI 2010, Sen Roy
and Balling 2004).