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Remapping annual precipitation in mountainous areas based on vegetation patterns: a case study in the Nu River basin

Zhou, X., Ni, G.-H., Shen, C. and Sun, T. (2017) Remapping annual precipitation in mountainous areas based on vegetation patterns: a case study in the Nu River basin. Hydrology and Earth System Sciences, 21 (2). pp. 999-1015. ISSN 1027-5606

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To link to this item DOI: 10.5194/hess-21-999-2017

Abstract/Summary

Accurate high-resolution estimates of precipitation are vital to improving the understanding of basin-scale hydrology in mountainous areas. The traditional interpolation methods or satellite-based remote sensing products are known to have limitations in capturing the spatial variability of precipitation in mountainous areas. In this study, we develop a fusion framework to improve the annual precipitation estimation in mountainous areas by jointly utilizing the satellite-based precipitation, gauge measured precipitation, and vegetation index. The development consists of vegetation data merging, vegetation response establishment, and precipitation remapping. The framework is then applied to the mountainous areas of the Nu River basin for precipitation estimation. The results demonstrate the reliability of the framework in reproducing the high-resolution precipitation regime and capturing its high spatial variability in the Nu River basin. In addition, the framework can significantly reduce the errors in precipitation estimates as compared with the inverse distance weighted (IDW) method and the TRMM (Tropical Rainfall Measuring Mission) precipitation product

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
ID Code:71104
Publisher:Copernicus

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