绿洲区域气候效应的数值模拟

北京大学学报（自然科学版）

绿洲区域气候效应的数值模拟

潘英¹, 刘树华^1,2,3

¹北京大学物理学院大气科学系，北京 100871； ²中国科学院大气物理研究所大气物理与大气化学国家重点实验室，北京 100029； ³国家气候中心中国气象局气候研究实验室，北京 100081；

收稿日期:2007-05-18 出版日期:2008-05-20 发布日期:2008-05-20

A Numerical Simulation Study on Regional Climate Effect over Oasis Area

PAN Ying¹，LIU Shuhua^1,2,3

¹Department of Atmospheric Sciences, School of Physics, Peking University, Beijing 100871; ²State Key Laboratory of Atmospheric Physics and Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; ³Laboratory of Climate Studies, China Meteorological Administration, National Climate Center, Beijing 100081;

Received:2007-05-18 Online:2008-05-20 Published:2008-05-20

摘要/Abstract

摘要： 在改进的土壤植被大气模式（MSPAS）的基础上，引入一个有效的大气辐射传输方案，建立了一个能在物理上真实地描述陆气相互作用及其反馈机制的二维模式（MLAIM）。利用HEIFE实验的观测资料，对改进了土壤水分传输、近地面层湍流输送以及植被物理过程参数化方案后的MLAIM进行了检验。结果表明，MLAIM能够合理地模拟陆气相互作用中的各种物理过程，能够有效地模拟绿洲与沙漠的地表能量收支情况。因此利用MLAIM对绿洲的气候效应进行了研究，分析了绿洲“冷岛效应”与“湿岛效应”的形成机理，并且着重研究了绿洲对其周围沙漠的影响。结果表明，绿洲对沙漠的水汽输送是影响沙漠地表能量收支以及绿洲周边区域气候的最重要的因子。

关键词: 陆气相互作用, 绿洲, 区域气候效应, 地表能量收支

Abstract: By extending Modified Soil-Plant-Atmosphere Scheme (MSPAS) to include an effective parameterization scheme of atmospheric radiation transfer, a two-dimensional model was built, which allows physically realistic simulation of modified land atmosphere interactions model (MLAIM) and relevant feedback mechanisms. After modification of parameterization schemes of soil water transfer,atmospheric surface layer turbulence transfer,and vegetation processes, the simulation results were validated by using observational data in HEIFE experiment.Results indicate that the modified MLAIM can simulate well physical processes in land atmosphere interactions.As a result, MLAIM can be used as an effective method to simulate land surface energy budget in oasis and desert,and to study the regional climate effect of oasis.The authors discussed the causes of oasis “cold island effect" and “wet island effect",and focused on oasis's influence on its surrounding desert.Results indicate that the water vapor transport from oasis to desert serves as the most important factor which affects the land surface energy budget in desert as well as the regional climate in oasis's surrounding areas.

Key words: land atmosphere interactions, oasis, regional climate effect, land surface energy budget

中图分类号:

P421

潘英, 刘树华. 绿洲区域气候效应的数值模拟[J]. 北京大学学报（自然科学版）.

PAN Ying,LIU Shuhua. A Numerical Simulation Study on Regional Climate Effect over Oasis Area[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

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链接本文: https://xbna.pku.edu.cn/CN/

https://xbna.pku.edu.cn/CN/Y2008/V44/I3/370

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