Water storage loss in central and south Asia from GRACE satellite gravity: correlations with climate data

Natthachet Tangdamrongsub, Cheinway Hwang () and Yu-Chi Kao
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Cheinway Hwang: http://www.space.cv.nctu.edu.tw

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2011, vol. 59, issue 2, 749-769

Abstract: Recent decrease of water supply in central Asia and south Asia affects billions of people here. By filtering the errors at higher frequency components and correcting for the contaminated components, we enhance the monthly GRACE gravity fields to improve the determination of change in equivalent water height (EWH). The water storage changes from GRACE and the GLDAS hydrology model all show decreasing trends in this region. At the annual and inter-annual time scales, significant correlations between the variations in EWH and the variations in temperature, precipitation and snow equivalent height are found, especially at high altitude stations, suggesting that climate change is the driving factor for the water depletion in central Asia and south Asia. Copyright Springer Science+Business Media B.V. 2011

Keywords: Equivalent water height; Central Asia; South Asia; GRACE; Gravity; GLDAS (search for similar items in EconPapers)
Date: 2011
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DOI: 10.1007/s11069-011-9793-9

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