compared to the Lower Bhima (K6) region, where the temperature was in the range
33 –33.5
C.
Daily maximum temperature of the Bhima sub-basin is increasing in comparison
with historical observed data. This increasing trend is reflected by the percentage (%)
changes in average daily maximum temperature over the subbasins and is
represented through the spatial maps and histograms plots for the different RCP
scenarios in Figs. 2.6 and 2.7. A histogram below each of the spatial maps is used to
summarize climate data. The histogram plot illustrates a visual interpretation of
numerical data by showing the number of data points that fall within a specified
range of values. A redline in the histogram indicates a mean percentage change. The
ranges of percentage (%) change in average daily maximum temperature are ascending in order from RCP 2.6 to RCP 8.5 scenarios. However, there is a marginal
change of 1% for the RCP 2.6 scenario as the variation is of the order of 3.3–4.3%.
Further, an identical percentage (%) change of average daily maximum temperature
for RCP 4.5 and RCP 6.0 occurs in the range of 6.4–8.0%. As expected, the highest
percentage (%) change in the range 12.6–14.6% changes in the average daily
maximum temperature is seen for the RCP 8.5 scenario.
Monthly average changes in percentage (%) over the basin for daily maximum
temperature based on the ensemble average of projections from five GCMs are
presented in Table 2.1.
Fig. 2.5 Average daily maximum temperature (in
C) over the Bhima sub-basin during 1986–2005
2 Regional Assessment of Impacts of Climate Change: A Statistical Downscaling. . .
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