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地球科学进展  2009, Vol. 24 Issue (7): 714-723    DOI: 10.11867/j.issn.1001-8166.2009.07.0714
能水平衡观测与模拟     
黑河流域不同下垫面水热通量特征分析
王维真1,徐自为2,刘绍民2,李新1,马明国1,王介民1,2
1.中国科学院寒区旱区环境与工程研究所,甘肃  兰州  730000;
2.北京师范大学遥感科学国家重点实验室,地理学与遥感科学学院,北京  100875
The Characteristics of Heat and Water Vapor Fluxes over Different Surfaces in the Heihe River Basin
Wang Weizhen1, Xu Ziwei2, Liu Shaomin2, Li Xin1, Ma Mingguo1, Wang Jiemin1,2
1.Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences, Lanzhou  730000, China;
2.State Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal University, Beijing  100875, China
 全文: PDF(2609 KB)  
摘要:

“黑河流域遥感—地面观测同步试验”在黑河上中游地区不同下垫面上建立了多个自动气象站和涡动相关仪及大孔径闪烁仪通量观测站。选取草地、森林及农田3种下垫面的观测资料,分析了水、热和CO2通量特征。结果表明:黑河流域内不同下垫面能量收支各分量(净辐射、感热、潜热和土壤热通量等)有明显的日变化特征;各通量观测站观测结果如季节变化趋势等差异明显,反映了不同下垫面地气交换特征的不同。黑河上游阿柔冻融观测站和中游临泽草地站两套大孔径闪烁仪(LAS)的观测与涡动相关仪有关结果有较好的对应关系。结合浅层土壤热储存量的计算等分析了地表能量平衡的闭合情况。LAS观测的感热通量一般大于涡动相关仪的测量值;两者的差异主要由下垫面的非均一性、通量贡献源区大小不同以及影响大气湍流通量观测的涡旋尺度不同等原因引起。

关键词: 黑河综合试验不同下垫面水热通量涡动相关LAS    
Abstract:

Several flux stations at difference sufaces have been established for the project “Simultaneous remote sensing and ground based experiment in the Heihe River basin”. In this paper, we selected the observation data on grasslands, forests and farmland and analyzed the characteristics of water vapor, heat and carbon dioxide (CO2) fluxes. The results showed that there are obvious diurnal and seasonal variations of energy balance components (net radiation, sensible heat, latent heat and soil heat flux, etc.) and different surface in the Heihe River basin has distinct characteristics. The Eddy-Covariance (EC) flux data have been compared with Large Aperture Scintillometer (LAS) observations at Arou Station (in the upper Heihe Basin) and Linze Station (in the middle basin). Both have good correlations, however, the sensible heat fluxes observed by LAS are generally larger than that of EC. The differences are mainly from the different footprints′ or source areas of LAS and EC in the non-uniform surfaces of the specific station. Besides, LAS observation of heat flux may comprise contributions from larger scale atmospheric turbulence. By considering soil heat storage in the upper soil layers, the surface energy balance closure has also been analyzed in each station.

Key words: Heihe experiments    Difference surface    Water and heat flux    Eddy correlation    LAS
收稿日期: 2009-02-18 出版日期: 2009-07-10
:  P422.4  
基金资助:

中国科学院西部行动计划(二期)项目“黑河流域遥感—地面观测同步试验与综合模拟平台建设”(编号:KZCX2-XB2-09-03);国家自然科学基金项目“复杂条件下湍流通量的观测与分析研究”(编号:40875006);国家重点基础研究发展计划项目“陆表生态环境要素主被动遥感协同反演理论与方法”(编号:2007CB714401)资助.

通讯作者: 王维真     E-mail: weizhen@lzb.ac.cn
作者简介: 王维真(1967-),男,山西万荣人,副研究员,博士,主要从事土壤水文学和气象环境水文学研究. E-mail:weizhen@lzb.ac.cn
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引用本文:

王维真,徐自为,刘绍民,李新,马明国,王介民. 黑河流域不同下垫面水热通量特征分析[J]. 地球科学进展, 2009, 24(7): 714-723.

Wang Weizhen, Xu Ziwei, Liu Shaomin, Li Xin, Ma Mingguo, Wang Jiemin. The Characteristics of Heat and Water Vapor Fluxes over Different Surfaces in the Heihe River Basin. Advances in Earth Science, 2009, 24(7): 714-723.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2009.07.0714        http://www.adearth.ac.cn/CN/Y2009/V24/I7/714

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