Performance of a F .R. P. pan evaporimeter
DOI:
https://doi.org/10.54302/mausam.v29i4.2951Abstract
Based on parallel evaporation measurements taken for 14 months on a standard U.S.A. class A pan evaporimeter and on an identically exposed and dimensioned pan made of Fibreglass Reinforced plastic (F.R.P.) material, it is found that they do not compare well with each other in performance. Differences in their behaviour are explained in terms of the thermal properties of the pan. By virtue of the lack of heat exchange with the environment above ground as in the case of a standard U .S.A. class A pan and by the absence of advection interactions in ground as in the case of a sunken GGI-3000 pan, the fibreglass pan fared better in approaching values of evaporation from a giant sunken 20 m2 tank of 2 m depth.
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