Global meridional eddy heat transport inferred from Argo and altimetry observations
Proportion and pathways of the eddy-induced heat transport are critical in maintaining world's ocean and climate states. However, an observation-based three-dimensional picture of how oceanic eddies contribute to the global heat transport is yet not quantitatively specified, particularly due to...
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/160860 2023-05-15T14:03:36+02:00 Global meridional eddy heat transport inferred from Argo and altimetry observations Sun, Bowen Liu, Chuanyu Wang, Fan 2019-02-04 http://ir.qdio.ac.cn/handle/337002/160860 https://doi.org/10.1038/s41598-018-38069-2 英语 eng NATURE PUBLISHING GROUP SCIENTIFIC REPORTS http://ir.qdio.ac.cn/handle/337002/160860 doi:10.1038/s41598-018-38069-2 Science & Technology - Other Topics Multidisciplinary Sciences MESOSCALE EDDIES OCEAN CIRCULATION NORTH PACIFIC SEA 期刊论文 2019 ftchinacasciocas https://doi.org/10.1038/s41598-018-38069-2 2022-06-27T05:40:32Z Proportion and pathways of the eddy-induced heat transport are critical in maintaining world's ocean and climate states. However, an observation-based three-dimensional picture of how oceanic eddies contribute to the global heat transport is yet not quantitatively specified, particularly due to insufficiency of data. Here, using refined methods, we have achieved this goal by analyzing millions of high-quality Argo hydrographic profiles and high-resolution satellite altimetric data. We first presented the spatial differences of individual eddies by reconstructing 254 representative eddies all over the ocean, and then calculated heat fluxes associated with eddies in 5 degrees x 5 degrees boxes. It is revealed that all parameters of eddies vary significantly with both latitudes and longitudes, which is crucial in yielding spatially varying heat fluxes and transports. The eddies not only transport heat towards high latitudes (down-gradient), but also towards low latitudes (up-gradient), particularly at subsurface layers of mid-latitude northern Pacific Ocean and low-latitude Atlantic Ocean. The eddy heat transport is mainly confined in the upper 1000 m of the western part and mid-latitudes of the world's ocean basins, coinciding with maximum meridional temperature gradients. It peaks at 0.8 PW and 0.3 PW (1 PW = 10(15) W) at 45 degrees S and 35 degrees N, respectively, stronger than previous estimates based on model results, and accounts for about one half and one third of the estimated total oceanic heat transport at the same latitudes, respectively. In any location except for the areas associated with the Antarctic Circumpolar Current, the eddy stirring component is distinctly (1-10 times) larger than the eddy trapping component. Report Antarc* Antarctic Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Antarctic Pacific The Antarctic Scientific Reports 9 1 |
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Open Polar |
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Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
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ftchinacasciocas |
language |
English |
topic |
Science & Technology - Other Topics Multidisciplinary Sciences MESOSCALE EDDIES OCEAN CIRCULATION NORTH PACIFIC SEA |
spellingShingle |
Science & Technology - Other Topics Multidisciplinary Sciences MESOSCALE EDDIES OCEAN CIRCULATION NORTH PACIFIC SEA Sun, Bowen Liu, Chuanyu Wang, Fan Global meridional eddy heat transport inferred from Argo and altimetry observations |
topic_facet |
Science & Technology - Other Topics Multidisciplinary Sciences MESOSCALE EDDIES OCEAN CIRCULATION NORTH PACIFIC SEA |
description |
Proportion and pathways of the eddy-induced heat transport are critical in maintaining world's ocean and climate states. However, an observation-based three-dimensional picture of how oceanic eddies contribute to the global heat transport is yet not quantitatively specified, particularly due to insufficiency of data. Here, using refined methods, we have achieved this goal by analyzing millions of high-quality Argo hydrographic profiles and high-resolution satellite altimetric data. We first presented the spatial differences of individual eddies by reconstructing 254 representative eddies all over the ocean, and then calculated heat fluxes associated with eddies in 5 degrees x 5 degrees boxes. It is revealed that all parameters of eddies vary significantly with both latitudes and longitudes, which is crucial in yielding spatially varying heat fluxes and transports. The eddies not only transport heat towards high latitudes (down-gradient), but also towards low latitudes (up-gradient), particularly at subsurface layers of mid-latitude northern Pacific Ocean and low-latitude Atlantic Ocean. The eddy heat transport is mainly confined in the upper 1000 m of the western part and mid-latitudes of the world's ocean basins, coinciding with maximum meridional temperature gradients. It peaks at 0.8 PW and 0.3 PW (1 PW = 10(15) W) at 45 degrees S and 35 degrees N, respectively, stronger than previous estimates based on model results, and accounts for about one half and one third of the estimated total oceanic heat transport at the same latitudes, respectively. In any location except for the areas associated with the Antarctic Circumpolar Current, the eddy stirring component is distinctly (1-10 times) larger than the eddy trapping component. |
format |
Report |
author |
Sun, Bowen Liu, Chuanyu Wang, Fan |
author_facet |
Sun, Bowen Liu, Chuanyu Wang, Fan |
author_sort |
Sun, Bowen |
title |
Global meridional eddy heat transport inferred from Argo and altimetry observations |
title_short |
Global meridional eddy heat transport inferred from Argo and altimetry observations |
title_full |
Global meridional eddy heat transport inferred from Argo and altimetry observations |
title_fullStr |
Global meridional eddy heat transport inferred from Argo and altimetry observations |
title_full_unstemmed |
Global meridional eddy heat transport inferred from Argo and altimetry observations |
title_sort |
global meridional eddy heat transport inferred from argo and altimetry observations |
publisher |
NATURE PUBLISHING GROUP |
publishDate |
2019 |
url |
http://ir.qdio.ac.cn/handle/337002/160860 https://doi.org/10.1038/s41598-018-38069-2 |
geographic |
Antarctic Pacific The Antarctic |
geographic_facet |
Antarctic Pacific The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
SCIENTIFIC REPORTS http://ir.qdio.ac.cn/handle/337002/160860 doi:10.1038/s41598-018-38069-2 |
op_doi |
https://doi.org/10.1038/s41598-018-38069-2 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
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1766274315067588608 |