修正的彭曼方程

修正的彭曼方程

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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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Geography SubjectPhysical GeographyClimatology
Earth System SubjectEarth Surface SystemAtmosphere

Detailed Description

修正的彭曼方程

 

式中,ET为实际蒸散;Ec为陆面可能蒸散;Eh为动态平衡下的蒸发(也称热力项)Em为空气动力项;f(u)为风速函数;us是距地面2m处的平均风速(m×s-1)ea是饱和水汽压;Rs为地面净辐射;as为地表反照率;Q为有云时到达地面的太阳总辐射;Q0为晴天时的太阳总辐射;𝑎为回归系数;n为实际日照时数;N为白昼时数;F为有效辐射;d为斯蒂芬-玻尔兹曼常数(地面比辐射率,对8~12mm窗区,雪面取0.99岩石区取0.89草甸区取0.98)W为整层水汽含量;z为海拔高度(km)g为鲍恩比方程湿度计算常数;Cp=0.24为空气定压比热;Ps为地面气压;L为蒸发热;Ta为气温;C为折算因子。

 

参考文献

陈乾,陈添宇:用NOAA卫星气象资料计算复杂地形下的流域蒸散。地理学报,1993,48(1)

 

How to cite

《资源环境数学模型手册》 (2018). 修正的彭曼方程, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/58f57e1c-601d-4312-abb1-34405128055f
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Contributor

contributed at 2018-12-04

Authorship

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

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