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Impact of different Meteorological Parameters and Relationship with Short Crop Reference Evapotranspiration for Humid Climatic Conditions

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Author Affiliations

  • 1Department of SWE, CTAE, MPUAT, Udaipur, Rajasthan, India
  • 2Department of SWE, CTAE, MPUAT, Udaipur, Rajasthan, India
  • 3Department of SWE, CTAE, MPUAT, Udaipur, Rajasthan, India
  • 4Department of SWE, CTAE, MPUAT, Udaipur, Rajasthan, India
  • 5Department of Agricultural Statistics and Computer Application RCA, Udaipur, Rajasthan, India
  • 6Department of SWE, CTAE, MPUAT, Udaipur, Rajasthan, India

Int. Res. J. Earth Sci., Volume 4, Issue (8), Pages 1-4, August,25 (2016)

Abstract

Reference evapotranspiration (ETo) is influence by solar radiation, ambient temperature, relative humidity, and wind speed. The estimation ETo varies from one climate to another and within the climate, and depends on the location and time. The diverse stations were selected to test the influence of different meteorological variables on evapotranspiration under humid climate conditions of Konkan region. The recent twenty four years data (1991-2014) was considered for analysis. The correlation and linear regression analysis was used to find influence of meteorological parameters on evapotranspiration. The results showed that sunshine hours, air temperature and wind speed had strong and positive correlation with reference evapotranspiration and negatively with relative humidity. The evapotranspiration was not significantly influenced by Tmin and RHmin. The maximum relative humidity contributes more in ETo estimation and more emphasis is to be given during estimation for humid region like Konkan region. The maximum temperature influence 24% and 21% ETo at Awalegaon and Mulde station. The sunshine hours affect ETo in the range of 17 to 23% for different stations. The minimum temperature and minimum relative humidity influenced less in prediction of ETo. For Awalegaon and Mulde station more importance should be given to maximum temperature while for Vengurle station wind speed found more important for estimation ETo.

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