Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe
Recent global changes in terrestrial water storage (TWS) and associated freshwater availability raise major concerns about the sustainability of global water resources. However, our knowledge regarding the long-term trends in TWS and its components is still not well documented. In this study, we cha...
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ftcopernicus:oai:publications.copernicus.org:hess77230 2023-05-15T15:09:15+02:00 Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe Liu, Xianfeng Feng, Xiaoming Ciais, Philippe Fu, Bojie 2020-07-22 application/pdf https://doi.org/10.5194/hess-24-3663-2020 https://hess.copernicus.org/articles/24/3663/2020/ eng eng doi:10.5194/hess-24-3663-2020 https://hess.copernicus.org/articles/24/3663/2020/ eISSN: 1607-7938 Text 2020 ftcopernicus https://doi.org/10.5194/hess-24-3663-2020 2020-07-27T16:22:03Z Recent global changes in terrestrial water storage (TWS) and associated freshwater availability raise major concerns about the sustainability of global water resources. However, our knowledge regarding the long-term trends in TWS and its components is still not well documented. In this study, we characterize the spatiotemporal variations in TWS and its components over the Asian and eastern European regions from April 2002 to June 2017 based on Gravity Recovery and Climate Experiment (GRACE) satellite observations, land surface model simulations, and precipitation observations. The connections of TWS and global major teleconnections (TCs) are also discussed. The results indicate a widespread decline in TWS during 2002–2017, and five hotspots of TWS negative trends were identified with trends between −8.94 and −21.79 mm yr −1 . TWS partitioning suggests that these negative trends are primarily attributed to the intensive over-extraction of groundwater and warmth-induced surface water loss, but the contributions of each hydrological component vary among hotspots. The results also indicate that the El Niño–Southern Oscillation, Arctic Oscillation and North Atlantic Oscillation are the three largest dominant factors controlling the variations in TWS through the covariability effect on climate variables. However, seasonal results suggest a divergent response of hydrological components to TCs among seasons and hotspots. Our findings provide insights into changes in TWS and its components over the Asian and eastern European regions, where there is a growing demand for food grains and water supplies. Text Arctic North Atlantic North Atlantic oscillation Copernicus Publications: E-Journals Arctic Hydrology and Earth System Sciences 24 7 3663 3676 |
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Copernicus Publications: E-Journals |
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English |
description |
Recent global changes in terrestrial water storage (TWS) and associated freshwater availability raise major concerns about the sustainability of global water resources. However, our knowledge regarding the long-term trends in TWS and its components is still not well documented. In this study, we characterize the spatiotemporal variations in TWS and its components over the Asian and eastern European regions from April 2002 to June 2017 based on Gravity Recovery and Climate Experiment (GRACE) satellite observations, land surface model simulations, and precipitation observations. The connections of TWS and global major teleconnections (TCs) are also discussed. The results indicate a widespread decline in TWS during 2002–2017, and five hotspots of TWS negative trends were identified with trends between −8.94 and −21.79 mm yr −1 . TWS partitioning suggests that these negative trends are primarily attributed to the intensive over-extraction of groundwater and warmth-induced surface water loss, but the contributions of each hydrological component vary among hotspots. The results also indicate that the El Niño–Southern Oscillation, Arctic Oscillation and North Atlantic Oscillation are the three largest dominant factors controlling the variations in TWS through the covariability effect on climate variables. However, seasonal results suggest a divergent response of hydrological components to TCs among seasons and hotspots. Our findings provide insights into changes in TWS and its components over the Asian and eastern European regions, where there is a growing demand for food grains and water supplies. |
format |
Text |
author |
Liu, Xianfeng Feng, Xiaoming Ciais, Philippe Fu, Bojie |
spellingShingle |
Liu, Xianfeng Feng, Xiaoming Ciais, Philippe Fu, Bojie Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe |
author_facet |
Liu, Xianfeng Feng, Xiaoming Ciais, Philippe Fu, Bojie |
author_sort |
Liu, Xianfeng |
title |
Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe |
title_short |
Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe |
title_full |
Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe |
title_fullStr |
Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe |
title_full_unstemmed |
Widespread decline in terrestrial water storage and its link to teleconnections across Asia and eastern Europe |
title_sort |
widespread decline in terrestrial water storage and its link to teleconnections across asia and eastern europe |
publishDate |
2020 |
url |
https://doi.org/10.5194/hess-24-3663-2020 https://hess.copernicus.org/articles/24/3663/2020/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_source |
eISSN: 1607-7938 |
op_relation |
doi:10.5194/hess-24-3663-2020 https://hess.copernicus.org/articles/24/3663/2020/ |
op_doi |
https://doi.org/10.5194/hess-24-3663-2020 |
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Hydrology and Earth System Sciences |
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24 |
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7 |
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3663 |
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3676 |
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1766340478036344832 |