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Current Journal of Applied Science and Technology

Current Journal of Applied Science and Technology, ISSN: 2457-1024; 2231-0843 (old),Vol.: 24, Issue.: 3

Original-research-article

Comparison of Potential Evapotranspiration Models and Establishment of Potential Evapotranspiration Curves for Temperate Kashmir Valley

 

Latief Ahmad1*, Sabah Parvaze1, S. S. Mahdi1, B. S. Dekhle2, Saqib Parvaze3, Maliqa Majid3 and Fozia Shafiq Wani4

1Division of Agronomy, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar - 190025, Jammu and Kashmir, India.
2Division of Agricultural Statistics, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar - 190025, Jammu and Kashmir, India.
3Division of Agricultural Engineering, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar - 190025, Jammu and Kashmir, India.
4Division of Soil Science, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar - 190025, Jammu and Kashmir, India.

 

Article Information
Editor(s):
(1) Ahmed Fawzy Yousef, Geology Department, Desert Research Center, Egypt.
Reviewers:
(1) Lidija Tadić, University of Osijek, Croatia.
(2) Sebahattin Kaya, Bingol University, Turkey.
Complete Peer review History: http://www.sciencedomain.org/review-history/21829

 

Abstracts

 

Potential evapotranspiration (PET) is a crucial indicator of hydrologic regime of a region. It is an important variable in the estimation of actual evapotranspiration (AET) in hydrological and ecosystem modeling. Evapotranspiration affects the amount of runoff and thus the irrigation water requirements of crops as well as water resources management. The present study has been carried out to compare the commonly used PET methods for the Shalimar weather station in district Srinagar of Kashmir Valley. FAO-56 Penman-Monteith equation is a standard method in estimating the PET. Other methods of PET estimation namely Modified-Penman, Hargreaves, Turc, Blaney Criddle, Christiansen, and Open Pan were compared with reference to Penman-Monteith method. Modified-Penman method was most correlated with the FAO-56 PM method with the coefficient of determination (R2) as high as 0.99. Modified-Penman method was followed by Hargreaves method with R2 of 0.98. Hargreaves method was then used to establish PET curves for other districts of Kashmir valley namely, Anantnag, Budgam, Baramulla, Kulgam, Kupwara and Pulwama where only data on air temperature is available. The highest annual PET was obtained for District Budgam being 951 mm and the least was obtained for district Baramulla being 759 mm.

 

Keywords :

Potential evapotranspiration; PET curves; FAO-56 Penman-Monteith; Kashmir Valley.

 

Full Article - PDF    Page 1-10    Article Metrics

 

DOI : 10.9734/CJAST/2017/36356

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