Updating Class A pan coefficients (Kp) for estimating reference evapotranspiration (ETo) in the humid tropical region of Kerala

Updating Class A pan coefficients (Kp) for estimating reference evapotranspiration (ETo) in the humid tropical region of Kerala

Authors

  • Celine George Centre for Water Resources Development and Management Sub centre, Manimalakunnu, Oliyappuram P.O., Koothattukulam 686 679, Kerala

Keywords:

Evaporation, Penman-Monteith method, Pan coefficient

Abstract

Evapotranspiration and evaporation are important parameters in water resource management and environment studies. This paper analyses six models for estimating pan coefficient (Kp) values in the humid tropical zone of Kerala. Estimated pan coefficients were not statistically accurate enough to be used for pan-to-ETo conversion. A significant increasing trend was observed for pan coefficient, whereas for evaporation and evapotranspiration, significant decreasing trends were observed over time. For the humid climate condition, the best Kp value for estimation of ETo is the constant value method and this constant value of Kp is to be updated for different climatic conditions.

Author Biography

Celine George, Centre for Water Resources Development and Management Sub centre, Manimalakunnu, Oliyappuram P.O., Koothattukulam 686 679, Kerala

Scientist

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Published

16-10-2012

How to Cite

George, C. (2012). Updating Class A pan coefficients (Kp) for estimating reference evapotranspiration (ETo) in the humid tropical region of Kerala. Journal of Tropical Agriculture, 50(1), 84–87. Retrieved from https://jtropag.kau.in/index.php/ojs2/article/view/274

Issue

Section

Short communications

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