| Development of a Model for Water and Heat Exchange Between the Atmosphere and a Water Body |
| |
| 作者姓名： | 孙蔬芬 颜金凤 夏南 孙长海 |
| |
| 作者单位： | State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric Physics Chinese Academy of Sciences，Beijing 100029，Shanghai Institute of Applied Mathematics and Mechanics Shanghai University，Shanghai 200072，Shanghai Institute of Applied Mathematics and Mechanics Shanghai University，Shanghai 200072，Shanghai Institute of Applied Mathematics and Mechanics Shanghai University，Shanghai 200072 |
| |
| 摘 要： | A model for studying the heat and mass exchange between the atmosphere and a water body is developed, in which the phase change process of water freezing in winter and melting in summer and the function of the convective mixing process are taken into consideration. The model uses enthalpy rather than temperature as the predictive variable. It helps to set up governing equations more concisely, to deal with the phase change process more easily, and make the numerical scheme simpler. The model is verified by observed data from Lake Kinneret for a non-frozen lake in summer time, and Lake Lower Two Medicine for a frozen lake in winter time. Reasonably good agreements between the model simulations and observed data indicate that the model can serve as a component for a water body in a land surface model. In order to more efficiently apply the scheme in a climate system model, a sensitivity study of various division schemes with less layers in the vertical direction in the water body is conducted. The results of the study show that the division with around 10 vertical layers could produce a prediction accuracy that is comparable to the fine division with around 40 layers.
|
| 关 键 词： | 温度变化 贮水池模型 对流混合 模型确认 |
| 收稿时间： | 10 September 2006 |
| 修稿时间： | 2006-09-10 |
Development of a model for water and heat exchange between the atmosphere and a water body |
| |
| Sun?Shufen,Yan?Jinfeng,Xia?Nan,Sun?Changhai.Development of a Model for Water and Heat Exchange Between the Atmosphere and a Water Body[J].Advances in Atmospheric Sciences,2007,24(5):927-938. |
| |
| Authors: | Sun Shufen Yan Jinfeng Xia Nan Sun Changhai |
| |
| Institution: | State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics
(LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072,Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072,Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072 |
| |
| Abstract: | A model for studying the heat and mass exchange between the atmosphere and a water body is developed,in which the phase change process of water freezing in winter and melting in summer and the function of the convective mixing process are taken into consideration. The model uses enthalpy rather than temperature as the predictive variable. It helps to set up governing equations more concisely, to deal with the phase change process more easily, and make the numerical scheme simpler. The model is verified by observed data from Lake Kinneret for a non-frozen lake in summer time, and Lake Lower Two Medicine for a frozen lake in winter time. Reasonably good agreements between the model simulations and observed data indicate that the model can serve as a component for a water body in a land surface model. In order to more efficiently apply the scheme in a climate system model, a sensitivity study of various division schemes with less layers in the vertical direction in the water body is conducted. The results of the study show that the division with around 10 vertical layers could produce a prediction accuracy that is comparable to the fine division with around 40 layers. |
| |
| Keywords: | water body model enthalpy convective mixing model validation |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
