Observed rainfall events and outgoing longwave radiation over contrasting river basins in Bihar, India

Authors

  • AMIT KUMAR Department of Earth and Environmental Sciences Indian Institute of Science Education and Research, Bhopal, India
  • P.PARTH SARTHI Department of Environmental Science, Central University of South Bihar, Gaya, Bihar, India
  • AMITA KUMARI Department of Earth and Environmental Sciences Indian Institute of Science Education and Research, Bhopal, India

DOI:

https://doi.org/10.54302/mausam.v73i2.5478

Keywords:

Rainfall event, India Meteorological Department (IMD), Kosi river basin, Punpun river basin, Outgoing Longwave Radiation (OLR).

Abstract

The long term extreme rainfall event analysis at the catchment scale is crucial for mitigation and prevention of flood like situations and water resource management.  This study evaluates the different rainfall events categorized by the India Meteorological Department (IMD) over the lower Kosi and Punpun river basin using the gridded rainfall data of 0.25° × 0.25° resolution for the period of 1979-2018. Further, the linkage between Outgoing Longwave Radiation (OLR) and rainfall events is examined. The daily accumulated rainfall shows large variation over the Kosi river basin in compare to the Punpun basin. The number of days of moderate and heavy rainfall over the lower Kosi River has significantly decreased. In addition, light and moderate rainfall over Punpun River has also decreased; however, it is non-significant. No significant trend in very heavy rainfall is found for both the river basin.  It is observed that the number of days in moderate rainfall events shows an acceptable negative correlation with Outgoing Longwave Radiation (OLR) over basins. This study will be helpful for the mitigation and prevention of disasters and sustainable water resource management under changing climate.

Downloads

Published

22-06-2022

How to Cite

[1]
A. . KUMAR, P. . SARTHI, and A. . KUMARI, “Observed rainfall events and outgoing longwave radiation over contrasting river basins in Bihar, India”, MAUSAM, vol. 73, no. 2, pp. 273–282, Jun. 2022.

Issue

Section

Research Papers

Most read articles by the same author(s)