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引用本文:颜金凤,李倩,夏南,孙菽芬.湖-气热传输模型及参数敏感性研究.湖泊科学,2007,19(6):735-743. DOI:10.18307/2007.0617
YAN Jinfeng,LI Qian,XIA NanI,SUN Shufen.Investigation of heat exchange model and parameter semdbility between the atmosphere and lake. J. Lake Sci.2007,19(6):735-743. DOI:10.18307/2007.0617
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湖-气热传输模型及参数敏感性研究
颜金凤1, 李倩2, 夏南1, 孙菽芬2
1.上海大学上海市应用数学和力学研究所, 上海 200072;2.中国科学院大气物理研究所 LASG, 北京 100029
摘要:
在一维涡扩散模型的基础上,发展了考虑冬天结冰和夏天蒸发等水体相变问题及对流混合过程的湖-气热传输模型.模型采用焓代替温度作为预报变量,这也更加方便处理水的相变问题.模型的计算结果与以色列Kinneret湖的观测资料进行对比,验证了模型的合理性,说明了加入对流混合过程是符合湖-气热传输的实际物理机制的.对风速和湖面摩擦速度作了敏感性实验,证明他们对湖面温度和蒸发潜热有着重要的影响.
关键词:  湖-气热传输  湖泊环境  大气环境  陆面过程
DOI:10.18307/2007.0617
分类号:
基金项目:国家自然科学基金项目(40575043;40233034);中国科学院创新工程项目(KZCX3-SW-229)联合资助.
Investigation of heat exchange model and parameter semdbility between the atmosphere and lake
YAN Jinfeng1, LI Qian2, XIA NanI1, SUN Shufen2
1.Shanghai Institute of Applied Mathematics and Mechanic, Shanghai University, Shanghai 200072, P. R. China;2.LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, P. R. China
Abstract:
Based on a one-dimensional eddy diffusion model, the model for studying the heat and mass exchange between the atmosphere and water body is developed, in which the phase change of water in winter and summer is included and the importance of the convective mixing process is emphasized. The model uses enthalpy instead of temperature as the forecast variable, which helps us to easily deal with phase change process. The model ie verified by observed data of lake ICinneret, which emphasizes adding convective mixing ptocesa is in accord with the practicalphysical mechanism of heat and mass exchange between the atmosphere and water body. The sensibility tests of wind velocity and surface friction velocity of lake verify their great influence on lake surface temperature and latent heat.
Key words:  Heat and mass exchange between the atmosphere and lake  lake-environment  atmosphere environment  land surface process
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