利用场地观测计算地表通量

doi:10.11867/j.issn.1001-8166.2006.12.1237

地球科学进展 ›› 2006, Vol. 21 ›› Issue (12): 1237 -1243. doi: 10.11867/j.issn.1001-8166.2006.12.1237

利用场地观测计算地表通量

H. Ishikawa ¹,K. Tanaka ²,Y. Oku ¹,马耀明 ³,胡泽勇 ⁴,李茂善 ⁴,马伟强 ⁴

1.Disaster Prevention Research Institute, Kyoto University,Kyoto Japan; 2.Kumamoto University,Kumamoto Japan;3.中国科学院青藏高原研究所，北京 100085; 4.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:2006-10-23 修回日期:2006-10-23 出版日期:2006-12-15
通讯作者: H. Ishikawa E-mail:ishikawa@storm.dpri.kyoto-u.ac.jp

Surface Flux Estimation Using in Situ Measurement

H. Ishikawa ¹,K. Tanaka ²,Y. Oku ¹,Ma Yaoming ³,Hu Zeyong ⁴,Li Maoshan ⁴,Ma Weiqiang ⁴

1.Disaster Prevention Research Institute, Kyoto University,Kyoto Japan; 2.Kumamoto University,Kumamoto Japan; 3.Institute of Tibetan Plateau, CAS,Beijing 100085,China; 4.Cold and Arid Regions Environmental and Engineering Research Institute, CAS,Lanzhou 730000,China

Received:2006-10-23 Revised:2006-10-23 Online:2006-12-15 Published:2006-12-15

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高原地表的感热和潜热通量在亚洲季风系统中有很重要的作用。由于高原地域辽阔，且自然环境较严酷，不利于建立完善的地面观测系统。因此，卫星遥感观测就成为测算高原整体感热和潜热通量的有效工具。地面场地的观测结果作为地表通量的真实值，对于卫星遥感测算是非常重要的。它也为构建陆面—大气模型提供了科学依据，是卫星资料的资料同化系统中的重要组成部分。
计算场地热量通量有几种不同的处理方法。最简单的方法利用有效的观测和试验的参数，可以给出稳定连续的估计。愈精确的Bowen比或者廓线的观测能给出愈精确的信息。综合了湍流测量及辐射测量、土壤热通量的观测结果的估计对陆面—大气相互作用进行了详细的描述，以适应模式的发展。从1998年开始，这些方法联合应用到青藏高原；场地通量观测方面的成果以及目前对其理解将在本文中做一概述。

关键词: 地表热通量, 青藏高原, 场地观测, 卫星遥感

Sensible and latent heat fluxes from the plateau surface are of great importance in the Asian monsoon system. Since the plateau occupies a wide area and the environmental conditions are severe to perform surface observation, the satellite remote sensing is inevitably a practical tool to estimate these fluxes from whole plateau surface. The in situ flux estimation is, however, necessary as a ground truth for the satellite remote sensing. It also gives scientific information in constructing land surface-atmosphere model, which shares an important part of data assimilation system using satellite data. There are several different approaches in estimating in situ heat fluxes. The simplest method uses operational observation and experimental parameters, and it gives steady continuous estimation. The more sophisticated Bowen ratio or profile observation gives the more precise information. The estimation with turbulence measurement together with the measurement of radiation and soil heat fluxes give detailed description of land surfaceatmosphere interaction suitable to model development. Since 1998, a combination of these methods has been applied to the Tibetan plateau. The efforts of these in situ flux observation and the current understandings are summarized in this presentation.

Key words: In situ measurement, Satellite remote sensing., Tibetan plateau, Surface heat flux

中图分类号:

P412.27

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