Water transport among the world ocean basins within the water cycle
The global water cycle involves water-mass transport on land, in the atmosphere, in the ocean, and among them. Quantification of such transport, especially its time evolution, is essential to identify the footprints of climate change, and it also helps to constrain and improve climatic models. In th...
Published in: | Earth System Dynamics |
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Copernicus Publications
2020
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00055186 2023-05-15T15:07:04+02:00 Water transport among the world ocean basins within the water cycle García-García, David Vigo, Isabel Trottini, Mario 2020-12 electronic https://doi.org/10.5194/esd-11-1089-2020 https://noa.gwlb.de/receive/cop_mods_00055186 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054837/esd-11-1089-2020.pdf https://esd.copernicus.org/articles/11/1089/2020/esd-11-1089-2020.pdf eng eng Copernicus Publications Earth System Dynamics -- http://www.earth-syst-dynam.net/ -- http://www.bibliothek.uni-regensburg.de/ezeit/?2578793 -- 2190-4987 https://doi.org/10.5194/esd-11-1089-2020 https://noa.gwlb.de/receive/cop_mods_00055186 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054837/esd-11-1089-2020.pdf https://esd.copernicus.org/articles/11/1089/2020/esd-11-1089-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/esd-11-1089-2020 2022-02-08T22:34:40Z The global water cycle involves water-mass transport on land, in the atmosphere, in the ocean, and among them. Quantification of such transport, especially its time evolution, is essential to identify the footprints of climate change, and it also helps to constrain and improve climatic models. In the ocean, net water-mass transport among the ocean basins is a key process, but it is currently a poorly estimated parameter. We propose a new methodology that incorporates the time-variable gravity observations from the Gravity Recovery and Climate Experiment (GRACE) satellite (2003–2016) to estimate the change in water content; this new approach also overcomes some fundamental limitations of existing methods. We show that the Pacific and Arctic oceans receive an average of 1916 (95 % confidence interval of [1812, 2021]) Gt per month ( ∼0.72±0.02 Sv) of excess freshwater from the atmosphere and the continents that is discharged into the Atlantic and Indian oceans, where net evaporation minus precipitation returns the water to complete the cycle. This is in contrast to previous GRACE-based studies, where the notion of a see-saw mass exchange between the Pacific and the Atlantic and Indian oceans has been reported. Seasonal climatology as well as the interannual variability of water-mass transport are also reported. Article in Journal/Newspaper Arctic Climate change Niedersächsisches Online-Archiv NOA Arctic Indian Pacific Earth System Dynamics 11 4 1089 1106 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung García-García, David Vigo, Isabel Trottini, Mario Water transport among the world ocean basins within the water cycle |
topic_facet |
article Verlagsveröffentlichung |
description |
The global water cycle involves water-mass transport on land, in the atmosphere, in the ocean, and among them. Quantification of such transport, especially its time evolution, is essential to identify the footprints of climate change, and it also helps to constrain and improve climatic models. In the ocean, net water-mass transport among the ocean basins is a key process, but it is currently a poorly estimated parameter. We propose a new methodology that incorporates the time-variable gravity observations from the Gravity Recovery and Climate Experiment (GRACE) satellite (2003–2016) to estimate the change in water content; this new approach also overcomes some fundamental limitations of existing methods. We show that the Pacific and Arctic oceans receive an average of 1916 (95 % confidence interval of [1812, 2021]) Gt per month ( ∼0.72±0.02 Sv) of excess freshwater from the atmosphere and the continents that is discharged into the Atlantic and Indian oceans, where net evaporation minus precipitation returns the water to complete the cycle. This is in contrast to previous GRACE-based studies, where the notion of a see-saw mass exchange between the Pacific and the Atlantic and Indian oceans has been reported. Seasonal climatology as well as the interannual variability of water-mass transport are also reported. |
format |
Article in Journal/Newspaper |
author |
García-García, David Vigo, Isabel Trottini, Mario |
author_facet |
García-García, David Vigo, Isabel Trottini, Mario |
author_sort |
García-García, David |
title |
Water transport among the world ocean basins within the water cycle |
title_short |
Water transport among the world ocean basins within the water cycle |
title_full |
Water transport among the world ocean basins within the water cycle |
title_fullStr |
Water transport among the world ocean basins within the water cycle |
title_full_unstemmed |
Water transport among the world ocean basins within the water cycle |
title_sort |
water transport among the world ocean basins within the water cycle |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/esd-11-1089-2020 https://noa.gwlb.de/receive/cop_mods_00055186 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054837/esd-11-1089-2020.pdf https://esd.copernicus.org/articles/11/1089/2020/esd-11-1089-2020.pdf |
geographic |
Arctic Indian Pacific |
geographic_facet |
Arctic Indian Pacific |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_relation |
Earth System Dynamics -- http://www.earth-syst-dynam.net/ -- http://www.bibliothek.uni-regensburg.de/ezeit/?2578793 -- 2190-4987 https://doi.org/10.5194/esd-11-1089-2020 https://noa.gwlb.de/receive/cop_mods_00055186 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054837/esd-11-1089-2020.pdf https://esd.copernicus.org/articles/11/1089/2020/esd-11-1089-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/esd-11-1089-2020 |
container_title |
Earth System Dynamics |
container_volume |
11 |
container_issue |
4 |
container_start_page |
1089 |
op_container_end_page |
1106 |
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1766338632501690368 |