10 September 2008 A study on microwave drought indices in Hebei Province of China using AMSR-E observations
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Based on the brightness temperature observations of AMSR-E in 2005 and 2006, this study attempts to find the simplest and best drought index for identifying drought areas. Totally 8 candidate drought indices were tested from the AMSR-E brightness temperature data. Assuming that the NASA AMSR-E soil moisture data obtained from complicated soil moisture retrieval algorithms are the best currently available soil drought indicator, the computed index with the best correlation with these soil moisture data should the best drought index. For each of the selected three stations in Hebei province, the temporal correlations between this drought index and the corresponding precipitation anomalies were computed for the two years. The spatial variations of this drought index and the precipitation anomaly were also compared with each other for Hebei province in March 2006. Based on these comparisons, the selected drought index was found to be useful for monitoring drought. Problems for using satellite microwave observations and future research needs on microwave drought monitoring are discussed.
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Youfei Zheng, Youfei Zheng, Fulai Guan, Fulai Guan, Fang Xu, Fang Xu, Xiwu Zhan, Xiwu Zhan, Binyun Yang, Binyun Yang, Rongjun Wu, Rongjun Wu, "A study on microwave drought indices in Hebei Province of China using AMSR-E observations", Proc. SPIE 7085, Atmospheric and Environmental Remote Sensing Data Processing and Utilization IV: Readiness for GEOSS II, 70850J (10 September 2008); doi: 10.1117/12.795190; https://doi.org/10.1117/12.795190

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