地理科学

地理科学 ›› 2003, Vol. 23 ›› Issue (1): 13-18.doi: 10.13249/j.cnki.sgs.2003.01.13

• 论文 • 上一篇    下一篇

青藏高原西部的地面热源强度及地面热量平衡

李国平1, 段廷扬1, 吴贵芬2   

  1. 1. 成都信息工程学院地球环境科学系, 四川 成都 610041;
    2. 太原航空仪表有限公司, 山西 太原 030006
  • 收稿日期:2002-02-27 修回日期:2002-05-23 出版日期:2003-01-20 发布日期:2003-01-20
  • 基金资助:
    国家自然科学基金资助项目(40075018);四川省青年科技基金资助项目(1999)。

The Intersity of Surface Heat Source and Surface Heat Balance on the Western Qinghai-Xizang Plateau

LI Guo-Ping1, DUAN Ting-Yang1, WU Gui-Fen2   

  1. 1. Department of Earth and Environmental Sciences Chengdu University of Information Technology, Chengdu, Sichuan 610041;
    2. Taiyuan Aviation Instruments Limited Company, Taiyuan, Shanxi 030006
  • Received:2002-02-27 Revised:2002-05-23 Online:2003-01-20 Published:2003-01-20

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摘要： 以1997年11月至1998年10月青藏高原西部改则和狮泉河地区自动气象站(AWS)连续观测的近地层梯度资料,采用廓线-通量法计算出观测期逐日的总体输送系数,进而用总体公式得出两站逐日的地面感热和潜热通量。结果表明:在此观测期内青藏高原西部不论冬夏地面皆为热源,地面热源强度具有明显的季节变化,两站地面热源强度的年平均值分别为82.5W/m2和68.2W/m2。结合辐射和土壤热通量观测资料揭示了两站的地面热量平衡状况,用地面热量平衡方程对以上结果进行了闭合误差检验。

Abstract: On the gradient observational data of the atmospheric surface layer from November 1997 to October 1998 collected by two sets of Automatic Weather Station (AWS) installed in Grz and Shiquanhe on the western Qinghai-Xizang Plateau, the bulk transfer coefficients each day are computed by the profile-flux method, and surface fluxes of sensible heat and latent heat each day are further estimated by the bulk formulas. The results show that the surface on the western Qinghai-Xizang Plateau is a heat source during this period whether in summer or in winter, the intensity of this heat source exhibits an obvious seasonal variation, yearly means of intensity of this heat source at the two stations are 82.5W/m2 and 8.2W/m2, respectively. The surface heat balance is discussed by involving the observational data of radiation and soil heat transfer, and the closed test of the surface heat balance equation is made.

中图分类号: 

  • P422.4