IOCAS-IR  > 海洋环流与波动重点实验室
Global meridional eddy heat transport inferred from Argo and altimetry observations
Sun, Bowen1,2; Liu, Chuanyu1,3,4; Wang, Fan1,3,4
2019-02-04
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume9Pages:10
Corresponding AuthorLiu, Chuanyu(chuanyu.liu@qdio.ac.cn) ; Wang, Fan(fwang@qdio.ac.cn)
AbstractProportion 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.
DOI10.1038/s41598-018-38069-2
Indexed BySCI
Language英语
Funding ProjectNational Key Research Program of China[2016YFC1401703] ; National Natural Science Foundation of China (NSFC)[41606026] ; National Natural Science Foundation of China (NSFC)[41730534] ; Aoshan Talents Program by the Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-ES03] ; Aoshan Talents Program by the Qingdao National Laboratory for Marine Science and Technology[2015ASTP] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC030] ; NSFC ; CAS[Y72143101B] ; CAS[Y82122101L]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000457616300233
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/160862
Collection海洋环流与波动重点实验室
Corresponding AuthorLiu, Chuanyu; Wang, Fan
Affiliation1.Chinese Acad Sci, Inst Oceanol, IOCAS, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol Qingdao QNLM, Marine Dynam Proc & Climate Funct Lab, Qingdao, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Sun, Bowen,Liu, Chuanyu,Wang, Fan. Global meridional eddy heat transport inferred from Argo and altimetry observations[J]. SCIENTIFIC REPORTS,2019,9:10.
APA Sun, Bowen,Liu, Chuanyu,&Wang, Fan.(2019).Global meridional eddy heat transport inferred from Argo and altimetry observations.SCIENTIFIC REPORTS,9,10.
MLA Sun, Bowen,et al."Global meridional eddy heat transport inferred from Argo and altimetry observations".SCIENTIFIC REPORTS 9(2019):10.
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