Abstract

The purpose of this study is to examine the advantages of using higher resolution regional model in simulating the temperature and precipitation over India. The Regional Climate Model version 3 (RegCM3) has been integrated to simulate the Indian summer monsoon rainfall for a number of years at two horizontal resolutions 55 and 30 km. The characteristics of interannual variations in the contrasting monsoon years 2002 and 2003 have been examined in details at these resolutions. Comparison shows that the model simulated area weighted average magnitudes and spatial distribution of rainfall over India during June to September months reasonably compare with the respective gridded rainfall values of India Meteorological Department (IMD). Model simulated rainfall values with 30 km resolution are closer to the IMD values as compared to the simulated precipitation at 55 km model resolution. Also the spatial distribution of rainfall in RegCM3 with 30 km is more realistic than that of 55 km resolution. Comparison with NCEP/NCAR analysed fields shows that RegCM3 with 30 km resolution performs better than that with 55 km resolution in simulating the upper and lower level winds over India. It may be noted that both temperature and rainfall are important weather parameters for the farmers in terms of agricultural productions. Dynamical downscaling of the high resolution model simulated weather parameters will eventually help in agricultural risk management.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.