地表蒸发过程分析公式

地表蒸发过程分析公式

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Chinese {{currentDetailLanguage}} Chinese

地表蒸发过程分析公式

 

(1)根据地表红外温度计算裸地蒸发率:

式中,Es为地表蒸发率;Hs(kg×m-3)是在温度为Ts时地表空气的绝对湿度;Ha(kg×m-3)是高度Z处的空气绝对湿度;rc为空气动力学阻力。

(2)根据地表能量平衡方程式计算地表温度Ts

式中,Ts为地表温度;L为水的汽化潜热;Es为蒸发率;LEs为蒸发所消耗的能量;Rn为净辐射;A为加热空气的显热;Z1为一土层的厚度;l1为土层Z1的导热率;T1为土层Z1的温度。

(3)均质一维非饱和水运动方程:

式中,D(q)K(q)为非饱和土壤水扩散率与导水率;t为时间;Z为从地面向下的距离;q为地表土壤含水量。

(4)一维瞬态的导热微分方程:

式中,T为土壤温度;C为土壤热容量;l为土壤的导热率;其他变量同上。

 

参考文献

杨邦杰,曾德超,唐登银:裸地蒸发过程的数值模拟。地理学报,1988,43(4)

 

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How to Cite

《资源环境数学模型手册》 (2018). 地表蒸发过程分析公式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/022b67f8-e63e-4ee5-8dd3-6d18216ab1dc
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Last modifier : 
Anxun Ren
Last modify time : 
2020-11-03
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Contributor(s)

initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feedback

History

Last modifier : 
Anxun Ren
Last modify time : 
2020-11-03
Modify times : 
View History

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