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Proceedings Paper

Monitoring severe drought in northern China in 1997 using meteorological satellite remote sensing
Author(s): Qianguang Xiao; Weiying Chen; Peng Du; Liang Guo
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Paper Abstract

During the summer of 1997, the air temperature is the highest in the same periods during recent forty years. On the condition of low precipitation and high evapotranspiration driven by it, severe drought happened in the north of China. Several methods of monitoring summer drought using NOAA meteorological satellite data are described in this paper. When vegetation cover is relatively low, thermal inertia method can be used to monitor drought. However drought often happens in summer, during which vegetation cover is relatively high. In order to solve this problem a new method, called Water Supplying Vegetation Index (WSVI), was developed. This new method detects drought information by combining vegetation with temperature retrieved from NOAA satellite data. The drought range and degree can be obtained using WSVI method. In order to verify these results, the satellite-monitored results are compared with the precipitation anomaly and soil moisture observed by agricultural meteorological stations. Compare indicates a close relationship between remote sensing methods and meteorological observation methods. The remote sensing methods are better than conventional methods in the observation range and accuracy.

Paper Details

Date Published: 18 August 1998
PDF: 6 pages
Proc. SPIE 3501, Optical Remote Sensing of the Atmosphere and Clouds, (18 August 1998); doi: 10.1117/12.317736
Show Author Affiliations
Qianguang Xiao, National Satellite Meteorological Ctr. (China)
Weiying Chen, National Satellite Meteorological Ctr. (China)
Peng Du, National Satellite Meteorological Ctr. (China)
Liang Guo, National Satellite Meteorological Ctr. (China)


Published in SPIE Proceedings Vol. 3501:
Optical Remote Sensing of the Atmosphere and Clouds
Jinxue Wang; Beiying Wu; Toshihiro Ogawa; Zheng-hua Guan, Editor(s)

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