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Radiation Controls the Interannual Variability of Evaporation of a Subtropical Lake
Author(s) -
Xiao Wei,
Zhang Zhen,
Wang Wei,
Zhang Mi,
Liu Qiang,
Hu Yongbo,
Huang Wenjing,
Liu Shoudong,
Lee Xuhui
Publication year - 2020
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
eISSN - 2169-8996
pISSN - 2169-897X
DOI - 10.1029/2019jd031264
Subject(s) - evaporation , albedo (alchemy) , longwave , environmental science , advection , shortwave radiation , atmospheric sciences , bowen ratio , entrainment (biomusicology) , precipitation , subtropics , outgoing longwave radiation , radiation , eddy covariance , energy balance , cloud cover , climatology , sensible heat , meteorology , geology , ecosystem , convection , physics , cloud computing , art , ecology , computer science , acoustics , biology , operating system , quantum mechanics , rhythm , thermodynamics , art history , fishery , performance art
Does lake evaporation increase or decrease under the scenario of climate warming? This paper aims to answer this question by investigating the controlling mechanism of interannual variations in lake evaporation at a subtropical lake. The research methodology is based on continuous eddy covariance measurement over >7 years and a diagnostic analysis using the surface energy balance principle. The results indicate that lake evaporation was enhanced mainly by increasing energy inputs including solar radiation and incoming longwave radiation and was weakened by surface feedback through outgoing longwave radiation. The incoming longwave radiation was positively correlated with cloud cover. Bowen ratio and surface albedo had slight effect on the change of lake evaporation. The annual lake evaporation can be predicted by the Priestly‐Taylor model using a larger coefficient of 1.39 than the original value of 1.26, suggesting that advection or entrainment in the atmospheric boundary layer may play a role in lake evaporation.