Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1109/IGARSS.2016.7729053 |
ESTIMATING REGIONAL EVAPOTRANSPIRATION UNDER WATER-LIMITED CONDITIONS BASED ON SEBS AND MODIS DATA IN ARID REGIONS | |
Huang, Chunlin1; Li, Yan1,2; Gu, Juan3; Lu, Ling1; Li, Xin1,4 | |
通讯作者 | Huang, Chunlin |
会议名称 | 36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS) |
会议日期 | JUL 10-15, 2016 |
会议地点 | Beijing, PEOPLES R CHINA |
英文摘要 | This study proposes a method for improving the estimation of surface turbulent fluxes in surface energy balance system (SEBS) model under water stress conditions using MODIS data. The normalized difference water index (NDWI) as an indicator of water stress is integrated into SEBS. To investigate the feasibility of the new approach, the desertoasis region in the middle reaches of the Heihe River Basin (HRB) is selected as the study area. The proposed model is calibrated with meteorological and flux data over 2008-2011 at the Yingke station and is verified with data from 16 stations of the Heihe Watershed Allied Telemetry Experimental Research (HiWATER) project in 2012. The results show that soil moisture significantly affects ET under water stress conditions in the study area. Adding the NDWI in SEBS can significantly improve the estimations of surface turbulent fluxes in water-limited regions especially for spare vegetation cover area. The daily ET maps generated by the new model also show improvements in drylands with low ET values. This study demonstrates that integrating the NDWI into SEBS as an indicator of water stress is an effective way to improve the assessment of the regional ET in semi-arid and arid regions. |
英文关键词 | Evapotranspiration arid region SEBS remote sensing MODIS NDWI Heihe River Basin |
来源出版物 | 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) |
ISSN | 2153-6996 |
出版年 | 2016 |
页码 | 238-241 |
EISBN | 978-1-5090-3332-4 |
出版者 | IEEE |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | CPCI-S |
WOS记录号 | WOS:000388114600062 |
WOS关键词 | APERTURE SCINTILLOMETER MEASUREMENTS ; EDDY-COVARIANCE |
WOS类目 | Engineering, Electrical & Electronic ; Geosciences, Multidisciplinary ; Remote Sensing |
WOS研究方向 | Engineering ; Geology ; Remote Sensing |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/304963 |
作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Remote Sensing Gansu Prov, Heihe Remote Sensing Expt Res Stn, Lanzhou 730000, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100101, Peoples R China; 3.Lanzhou Univ, MoE Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China; 4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, Chunlin,Li, Yan,Gu, Juan,et al. ESTIMATING REGIONAL EVAPOTRANSPIRATION UNDER WATER-LIMITED CONDITIONS BASED ON SEBS AND MODIS DATA IN ARID REGIONS[C]:IEEE,2016:238-241. |
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