Water storage loss in central and south Asia from GRACE satellite gravity: correlations with climate data |
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Authors: | Natthachet Tangdamrongsub Cheinway Hwang Yu-Chi Kao |
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Institution: | (1) Department of Civil Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, 300, Taiwan; |
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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. |
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Keywords: | |
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