Developing Land-surface Evapotranspiration Remote Sensing Monitoring System Using the Component Technology

  • 1. School of Earth Sciences and Engineering of Hohai University, Nanjing 210098, China;
    2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Enginering, Hohai University, Nanjing 210098, China

Received date: 2010-11-22

  Revised date: 2011-09-22

  Online published: 2011-10-25


For the requirements of integrating the Energy and Water Balance model into the remote sensing model, in this paper we developed a basic technological process of land-surface evapotranspiration remote sensing monitoring system using C# language mixed with ENVI/IDL (which flexibility offered digital image processing) and ArcGIS Engine (which has powerful functions in spatial analysis), and designed the hydrometeorological and remote sensing information database and the pattern of integrating the Energy and Water Balance model into the remote sensing model. Then we researched the method of evapotranspiration (ET) unit derived and the function of regional ET evaluation based on multi spatial and temporal scales. By all of above, integration and application of the Energy and Water Balance model into the remote sensing model were implemented. The study area of this research is Sanhuajian basin which located in Yellow River. The process experimental data is MODIS (Moderate-resolution Imaging Spectroradiometer) image which date from August 2002 to August 2009. The system extracted the parameters related to ET which include surface temperature, water index, vegetation index, impervious surface and etc, and completed part of the land surface ET parameter extraction task. By using the modul of ET processing batch the system achieved the requirement of the ET derived completely. The report generated by the statistical report modul displayed the basic thematic statistical information and the remote-sensing monitoring thematic map information. The results show that this remote sensing monitoring system has the advantages of short execution time and high efficiency and friendly human-computer interaction, and it is helpful to solve the crux of complication processes in land surface ET estimation using routine remote sensing softwares, and it has been of great practical value.

Cite this article

QIAN Zhiqi, ZHANG Youjing, DENG Shizan, FANG Yingying, CHEN Chen . Developing Land-surface Evapotranspiration Remote Sensing Monitoring System Using the Component Technology[J]. Journal of Geo-information Science, 2011 , 13(5) : 679 -686 . DOI: 10.3724/SP.J.1047.2011.00679


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