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Research Article Open access CC BY 4.0

Impact of Climate Change on Potential Evapotranspiration in Bawal and Karnal Districts of Haryana, India: A Spatio-temporal Analysis

Rahul Punia, Anurag, Manjeet, Khemendra Choudhary, Pardeep Kumar

International Journal of Environment and Climate Change · pp. 54–67 · Published 28 Jul 2025

10.9734/ijecc/2025/v15i84955

Abstract

Crop water demands are determined in part by potential evapotranspiration (PET), which is essential to irrigation planning. Therefore, using the non-parametric Mann–Kendall (MK) test, trends in PET were found over Bawal and Karnal in Haryana (India) in the current study. Using weather data for 35 years from 1985 to 2019, PET values were first approximated using the Thornthwaite method for various time frames. At Bawal and Karnal, PET was observed to rise significantly over the yearly, kharif, rabi, pre-monsoon, monsoon, and post-monsoon time scales. Wind speed was shown to have a dynamic influence on the observed PET variations at the annual time scale and throughout all seven seasons in the Bawal and Karnal upon investigating the causal meteorological parameters accountable for the reported PET trends in these regions. The study's findings corroborate the theory that evapotranspiration rises over Bawal and Karnal.

Evapotranspiration trend PET meteorological parameters Bawal and Karnal

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