The Asssessment of the Impacts of Climate Change over the Kangsabati River using Hydrological Modeling
This paper attempts to quantify the effect of climate change over the Kangsabati basin in Bankura, West Bengal. A very well calibrated (R2 = 0.9968, NSE = 0.91) physically distributed hydrological model, Soil and Water Assessment Tool (SWAT) uses futuristic climatic data from HadRM2 in order to predict the future water availability scenario of one of Bengal’s most physically diversified regions. General Circulation Models are widely accepted as the primary tool used for analysis of potential increased green house gases and more recently, aerosols. Two outputs of these models are temperature and precipitation. Water availability in the basin under changed climate scenario was evaluated using the projected daily precipitation for 2041-2050 as supplied by IITM, Pune. There work is based on the model HadRM2, the Regional Model of Hadley Centre for Climatic Prediction, UK at a resolution of 0.44° latitude X 0.44° longitude. A very well calibrated SWAT model was exercised over the Raipur sub basin of the Kangsabati River in the Bankura district of West Bengal. The SWAT model presented a projected scenario of various parameters for the years 2042-2050 essential towards water resources planning over the area.
Keywords: Climate Change, River, Modeling, SWAT, Projected Availability Scenario
Sujana Dhar
Research Scholar, School of Water Resources Engineering, Jadavpur University
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Ref: C09P0057