J4 ›› 2004, Vol. 22 ›› Issue (4): 46-50.

• 论文 • 上一篇    下一篇

敦煌干旱区一次降水过程陆面特征模拟

王 胜1,张 强1,卫国安2
  

  1. (1.中国气象局兰州干旱气象研究所、甘肃省干旱气候变化与减灾重点实验室,甘肃兰州 730020;
    2.中国科学院寒区旱区环境与工程研究所,甘肃兰州 730000
  • 收稿日期:2004-08-26 修回日期:2004-11-16 出版日期:2004-12-31 发布日期:2004-12-31
  • 作者简介:王胜(1973-),男,新疆奎屯人,硕士,主要从事陆气相互作用研究.E-mail:totrump@sina.com
  • 基金资助:

    国家自然科学基金(40175004)、兰州干旱气象研究所项目“陆面过程模式对西北干旱区绿洲地表能量的模拟”,国家重点基础研
    究发展规划(G1998040900)共同资助.

Simulation of Land-surface Characteristic under Precipitation Condition in Dunhuang Arid Region

WANG  Qing1, ZHANG  Jiang1, WEI Guo-An2   

  1. (1.Institute of Arid Meteorology,CMA,Key Laboratory of Arid Climatic Change and Reducing
    Disaster, Lanzhou 730020,China;2.Cold and Arid Regions Environmental and Engineering
    Institute,Chinese Academy of Science, Lanzhou 730000,China)
  • Received:2004-08-26 Revised:2004-11-16 Online:2004-12-31 Published:2004-12-31

摘要:

:利用“我国西北干旱区陆—气相互作用观测试验”在敦煌双墩子戈壁站取得的观测资料及最近的一些研究成果,对陆面模式进行了改进,然后对一次典型较大降水过程的陆面特征及近地层的风、温、湿进行了模拟,结果表明:改进的模式能对降水条件下的干旱区陆面特征进行较好的模拟,其中对辐射、地表温度的模拟相当好,能量的模拟总体结果令人满意;另外由于本模式专门考虑了近地层的影响,所以对近地层的风速、温度和湿度的模拟结果相当好。

关键词: 西北干旱区, 陆面过程, 降水过程, 可利用能量

Abstract:

A land-surface model is improved by using some new research results.Net radiation, surface temperature, sensible heat,
latent heat and temperature, specific humidity and wind velocity in ground layer under precipitation condition are simulated by using
the data observed at Dunhuang in the“Field Experiment on Interaction between Land and Atmosphere in the Arid Region of
Northwest China”.The results show that the model is ameliorated well.The radiation flux and surface temperature simulation are
better than energy. The simulation of the temperature, specific humidity and wind speed in ground layer is well because the ground
layer is considered alone in this model.

Key words: arid region in northwest China, land-surface process, precipitation, available energy

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