Estimation and Validation of Land Surface Evaporation Using Remote Sensing and Meteorological Data in North China

被引：29

作者：

Xiong, Jun ^{[1
]}

Wu, Bingfang ^{[1
]}

Yan, Nana ^{[1
]}

Zeng, Yuan ^{[1
]}

Liu, Shufu ^{[1
]}

机构：

[1] Acad Sci, Inst Remote Sensing Applicat, Beijing 100101, Peoples R China

来源：

IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING | 2010年 / 3卷 / 03期

关键词：

ETWatch; evapotranspiration; remote sensing; validation; ENERGY FLUXES; MODIS; ALGORITHM; TEMPERATURE; TOWER; SOIL;

D O I：

10.1109/JSTARS.2010.2040806

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

There is a growing interest in quantifying regional scale actual evapotranspiration (ET) for water resource management. Using moderate-resolution Imaging spectroradiometer (MODIS) data, in combination with meteorological records, an integrated approach is proposed to estimate daily ET over 1-km grid covering North China. The Surface Energy Balance System (SEBS) is adapted to partition the sensible heat from latent heat. A gap-filling method for ET estimation during cloudy intervals is accomplished by a combination of SEBS outputs and Penman-Monteith equation. The proposed scheme, named ETWatch, is calibrated and evaluated using measurements from four flux sites in the semi-humid regions with different soil types, land cover, and climate conditions in North China. The gap-filling method reproduces observed fluxes with satisfied correlation, yielding about a 22% MAPD in Yucheng agriculture site. The improved method could be used to study the impact of different agricultural water consuming patterns in North China.

引用

页码：337 / 344

页数：8

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