Abstract
Knowledge of trends and variations of current and historical hydro-climatological variables are pertinent to the future development and sustainable management of water resources of a given region. Rainfall is a principal element of the hydrological cycle, so that understanding its behavior may be of profound social and economic significance. The detection of trends and oscillations in precipitation time series yields important information for the understanding of climate. However, rainfall changes are particularly hard to gauge, because rainfall is not uniform and varies considerably from place to place and time to time, even on small scales. The Sitanadi basin has a tropical monsoon climate. The highland of the district experiences mainly orographic rainfall. Rainfall data for 42 years were considered for the study and SPI was calculated for the whole period. SPI values of the rain gauge stations of the Sitanadi basin were found to vary from +2.43 to -2.50. In all rain gauge stations higher abnormality is observed in pre monsoon season compared to post monsoon season. The validation based on station gauge rainfall data showed that the SPIs calculated were reliable for monitoring drought regions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.