Geoscience Reference
In-Depth Information
Fig. 5 Simulated development and movement of a monsoon depression that has been observed within the
period from 18 to 22 September 1991: The panels show the MSLP (mean sea level pressure) contour lines at
999 hPa around the centre of the depression as simulated by REMO without (left) and with (right) irrigation
irrigation projects an increase of more than 4 C in general and more than 6 C over the
central Indian region. In contrast, the REMO simulation with irrigation projects much less
warming, with a temperature increase ranging from 2 to 4 C. This highlights the role of
irrigation in attenuating the climate change signal over the South Asian region. Thus, it can
be concluded that the irrigation performed over the twentieth century may have already
masked recent climate change signals over this region.
2.2 Conclusions and Perspectives for the Impact of Irrigation on Climate
The results presented in Sect.
2.1
signify the role of irrigation in effecting the local
temperature, which in turn effects large-scale circulations and precipitation of the SASM.
Fig. 6 Projected 2 m temperature changes (2085-2099 minus 1985-1999) in C for REMO without
(left panel) and with irrigation (right panel)
