Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR028737 |
Sigmoid generalized complementary equation for evaporation over wet surfaces: A nonlinear modification of the Priestley–Taylor equation | |
Songjun Han; Fuqiang Tian; Wei Wang; Liming Wang | |
2021-08-07 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | The deviations of the Priestley–Taylor (PT) coefficient from a fixed value around 1.26 indicate a nonlinear dependence of wet surface evaporation () on the equilibrium evaporation (, which is the radiation term in Penman potential evaporation ()). The linear PT equation with a fixed coefficient underestimates for small but overestimates for large , whereas the Penman equation with calibrated linear wind function has the opposite bias. In this study, the sigmoid generalized complementary (SGC) equation by Han and Tian (2018a) was applied to estimate the wet surface evaporation by setting its asymmetric parameter to infinity. The SGC equation with one fixed parameter captures the nonlinear dependence of on over wet surfaces by including the aerodynamic component of with a reference wind function, and amends the shortages of the linear PT and Penman equation. By using datasets over open water surfaces of lakes and ocean, wetlands, and paddy fields, the validation results indicate that the wet surface SGC equation performed better than the linear PT and Penman equations on evaporation estimation. The success of the wet surface SGC equation has implications for the extension of the complementary principle to consider varying aerodynamic conditions over wet surfaces. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335399 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Songjun Han,Fuqiang Tian,Wei Wang,等. Sigmoid generalized complementary equation for evaporation over wet surfaces: A nonlinear modification of the Priestley–Taylor equation[J]. Water Resources Research,2021. |
APA | Songjun Han,Fuqiang Tian,Wei Wang,&Liming Wang.(2021).Sigmoid generalized complementary equation for evaporation over wet surfaces: A nonlinear modification of the Priestley–Taylor equation.Water Resources Research. |
MLA | Songjun Han,et al."Sigmoid generalized complementary equation for evaporation over wet surfaces: A nonlinear modification of the Priestley–Taylor equation".Water Resources Research (2021). |
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