Building Drought Index Based on AMSR-E Data - A Case Study in Hilly Area of Central Sichuan Basin

Abstract:

Sichuan Hilly Area is selected as the study area. This paper uses ten brightness temperature AMSR-E data during 2006-2010. It constructs 8 preferred drought index by using the polarization ratio method (Polarization Rations, PR). This paper makes Pearson correlation analysis by using the 8 preferred drought index and the soil moisture of study area. Meanwhile, Linear regression and correlation analysis with the Daily precipitation and the standardized precipitation index SPI are also made. The results show: for example, in December 2009, drought index DI74, DI92, DI96 were basically consistent with the spatial distribution. Drought degree has an increasing trend from southeast to northwest regional gradually. And with the drought conditions in hilly area of actual and daily precipitation, SPI correlation between interannual and Sichuan are proper. So the drought index is more suitable for drought study in hilly area of central Sichuan Basin.

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 2292-2295
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.2292
• Online since: September 2013
• Authors: Qiong Lian Chen, Jing Wen Xu, Shao Wei Shi, Xin Li, Peng Wang
• Keywords: AMSR-E, Drought Index, Hilly Area of Central Sichuan Basin

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