Comparative assessment of evapotranspiration in Bhima sub-basin using spatial analysis for normal and ENSO years

Authors

  • DIGAMBAR S. LONDHE Visvesvaraya National Institute of Technology, Nagpur, Maharashtra
  • YASHWANT B. KATPATAL Visvesvaraya National Institute of Technology, Nagpur, Maharashtra

DOI:

https://doi.org/10.54386/jam.v22i2.159

Keywords:

Evapotranspiration, SWAT, ENSO, NDVI

Abstract

Evapotranspiration (ET) estimation is important for hydrological modelling and water management for irrigation. The present study estimates the reference evapotranspiration using FAO Penman-Monteith (FAO P-M) method and SWAT hydrological model, and its spatial variation during ENSO events during 1996 to 2013. The spatial variation of crop coefficient and actual evapotranspiration (ETa) is also analyzed. The results from these methods are compared for various El Niño-Southern Oscillation (ENSO) events and normal years. MODIS NDVI data was used to generate crop coefficients which were further used for generation of ETa.The results show that the ET0 estimated using FAO P-M is less during the pre-monsoon period than ET0 estimated using SWAT model. ET0values from FAO P-M show decreasing trends while those by SWAT show increasing trends. Also, ET0 shows higher values during post monsoon period of El Niño years as compared to La Niña and normal years.

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Published

01-06-2020

How to Cite

DIGAMBAR S. LONDHE, & YASHWANT B. KATPATAL. (2020). Comparative assessment of evapotranspiration in Bhima sub-basin using spatial analysis for normal and ENSO years. Journal of Agrometeorology, 22(2), 179–185. https://doi.org/10.54386/jam.v22i2.159

Issue

Vol. 22 No. 2 (2020): June

Section

Research Paper

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