SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Contrasting changes in the sea surface temperature and upper ocean heat content in the South China Sea during recent decades
Xiao, Fuan; Wang, Dongxiao; Zeng, Lili; Liu, Qin-Yan; Zhou, Wen2
2019
Source PublicationCLIMATE DYNAMICS
ISSN0930-7575
Volume53Issue:2019-03-04Pages:1597
AbstractUnderstanding the variability of upper ocean thermal conditions is key to regional climate prediction. In recent decades, the sea surface temperature and upper ocean heat content in the South China Sea (SCS SST and SCS OHC) have exhibited contrasting changes. In-situ observations and reanalysis data reveal a linear warming trend in SCS SST during 1975-2010 but a regime shift of SCS OHC during the late 1990s. Mixed layer heat budget analysis shows that the decreasing latent heat flux associated with a weakening surface wind contributes to SCS SST warming trend. The increasing SCS SST reflects a regional footprint of global warming. A simplified upper layer budget diagnosis reveals that more than half of OHC change results from the advection effect, which is caused by an anomalous SCS anticyclonic gyre associated with an anomalous negative wind stress curl. Then, the anomalous anticyclonic circulation deepens thermocline depth at the basin-scale, and result in the regime shift of SCS OHC. Changes in the ocean circulation are found to be related to the enhanced trade wind and a Matsuno-Gill response to cooling in the tropical central Pacific. Further analyses show that the regime shift process is attributed to a phase transition of the Interdecadal Pacific Oscillation (IPO) from positive to negative. Our results indicate that although the IPO is the sea surface low-frequency climate pattern, it could impact on the subsurface thermal variability in the SCS through the oceanic process.
DepartmentLTO
KeywordSea surface temperature Upper ocean heat content South China Sea Regime shift Interdecadal Pacific Oscillation
DOI10.1007/s00382-019-04697-1
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17699
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Guangzhou Univ, Sch Geog Sci, Guangzhou 510006, Guangdong, Peoples R China
2.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
3.City Univ Hong Kong, Guy Carpenter Asia Pacific Climate Impact Ctr, Sch Energy & Environm, Kowloon, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Fuan,Wang, Dongxiao,Zeng, Lili,et al. Contrasting changes in the sea surface temperature and upper ocean heat content in the South China Sea during recent decades[J]. CLIMATE DYNAMICS,2019,53(2019-03-04):1597, 1612.
APA Xiao, Fuan,Wang, Dongxiao,Zeng, Lili,Liu, Qin-Yan,&Zhou, Wen.(2019).Contrasting changes in the sea surface temperature and upper ocean heat content in the South China Sea during recent decades.CLIMATE DYNAMICS,53(2019-03-04),1597.
MLA Xiao, Fuan,et al."Contrasting changes in the sea surface temperature and upper ocean heat content in the South China Sea during recent decades".CLIMATE DYNAMICS 53.2019-03-04(2019):1597.
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