IOCAS-IR  > 海洋环流与波动重点实验室
Multidecadal Changes of the Upper Indian Ocean Heat Content during 1965-2016
Li, Yuanlong1,2,3; Han, Weiqing2; Hu, Aixue4; Meehl, Gerald A.4; Wang, Fan1,5,6
2018-10-01
Source PublicationJOURNAL OF CLIMATE
ISSN0894-8755
Volume31Issue:19Pages:7863-7884
Corresponding AuthorLi, Yuanlong(liyuanlong@qdio.ac.cn)
AbstractOcean heat uptake is the primary heat sink of the globe and modulates its surface warming rate. In situ observations during the past half century documented obvious multidecadal variations in the upper-ocean heat content (0-400 m; OHC400) of the Indian Ocean (IO). The observed OHC400 showed an increase of (5.9 +/- 2.5) x 10(21) J decade(-1) during 1965-79, followed by a decrease of (-5.2 +/- 2.5) x 10(21) J decade(-1) during 1980-96, and a rapid increase of (13.6 +/- 1.1) x 10(21) J decade(-1) during 2000-14. These variations are faithfully reproduced by an Indo-Pacific simulation of an ocean general circulation model (OGCM), and insights into the underlying mechanisms are gained through OGCM experiments. The Pacific wind forcing through the Indonesian Throughflow (ITF) was the leading driver of the basin-integrated OHC400 increase during 1965-79 and the decrease during 1980-96, whereas after 2000 local wind and heat flux forcing within the IO made a larger contribution. The ITF heat transport is primarily dictated by Pacific trade winds. It directly affects the south IO, after which the signatures can enter the north IO through the meridional heat transport of the western boundary current. The prevailing warming of the western-to-central IO for 2000-14 was largely induced by equatorial easterly wind trends, Ekman downwelling off the equator, and northeasterly wind trends over the west Asia-East Africa coastal region. The increasing downward longwave radiation, probably reflecting anthropogenic greenhouse gas forcing, overcame the decreasing surface shortwave radiation and also made a significant contribution to the rapid upper-IO warming after 2000.
KeywordIndian Ocean Ocean circulation Wind stress Pacific decadal oscillation Multidecadal variability
DOI10.1175/JCLI-D-18-0116.1
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[41776001] ; National Program on Global Change and Air-Sea Interaction[GASI-IPOVAI-01-01] ; AoShan Talents Program ; Qingdao National Laboratory for Marine Science and Technology (Grant 2015ASTP) ; NSF-AGS[1446480] ; NSF-OCE[1658132]
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000442201100001
PublisherAMER METEOROLOGICAL SOC
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/159865
Collection海洋环流与波动重点实验室
Corresponding AuthorLi, Yuanlong
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
2.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA
3.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China
4.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA
5.Chinese Acad Sci, Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China
6.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Yuanlong,Han, Weiqing,Hu, Aixue,et al. Multidecadal Changes of the Upper Indian Ocean Heat Content during 1965-2016[J]. JOURNAL OF CLIMATE,2018,31(19):7863-7884.
APA Li, Yuanlong,Han, Weiqing,Hu, Aixue,Meehl, Gerald A.,&Wang, Fan.(2018).Multidecadal Changes of the Upper Indian Ocean Heat Content during 1965-2016.JOURNAL OF CLIMATE,31(19),7863-7884.
MLA Li, Yuanlong,et al."Multidecadal Changes of the Upper Indian Ocean Heat Content during 1965-2016".JOURNAL OF CLIMATE 31.19(2018):7863-7884.
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