Open AccessPerformance of a F .R. P. pan evaporimeter
Author(s) -
T. RAMANA RAO,
K. SUBBA RAO
Publication year - 1978
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v29i4.2951
Subject(s) - evaporation , advection , pan evaporation , environmental science , thermal , atmospheric sciences , meteorology , geography , geology , physics , thermodynamics
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.