Evaporation rates from different pans under humid tropical conditions

Authors

  • A SAMBASIVARAO Centre or Water Resources Development and Management, Calicut
  • VK VAMADEVAN Centre or Water Resources Development and Management, Calicut

DOI:

https://doi.org/10.54302/mausam.v37i3.2378

Abstract

Under humid tropical conditions, the relative evaporation .rates from Class A open pan, G.G.I. 3000 and Colorado sunken pans were studied.. The recorded evaporation values were compared with evaporation estimated with a modified Penman equation. The Inter relationship between evaporation values and the influence of weather parameters on evaporation were also studied using statistical correlations.

About 88-93 per cent of insolation was absorbed from the pan surfaces for evaporation. The seasonal variation of evaporation was between 4 and 10. mm/day and the variation In evaporation due to type of pan used was up to 3 mm/day. The estimated evaporation values were within +-2.0 mm/day from the measured values. The evaporation values from the sunken pans were higher than from Class A by 1-3 mm/day and they were also closely correlated. The aerodynamic parameters were closely correlated with evaporation from Class A than from the sunken pans. The high soil thermal regime the area during October to May has increased the evaporation from the sunken pans.

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Published

01-07-1986

How to Cite

[1]
A. SAMBASIVARAO and V. VAMADEVAN, “Evaporation rates from different pans under humid tropical conditions”, MAUSAM, vol. 37, no. 3, pp. 325–328, Jul. 1986.

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Section

Shorter Contribution