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Sea surface cooling in the Northern South China Sea observed using Chinese sea-wing underwater glider measurements
Qiu CH(邱春华); Mao HB(毛华斌); Yu JC(俞建成); Xie, Qiang; Wu, Jiaxue; Lian SM(练树民); Liu, Qinyan
Department水下机器人研究室
Source PublicationDeep-Sea Research Part I: Oceanographic Research Papers
ISSN0967-0637
2015
Volume105Pages:111-118
Indexed BySCI ; EI
EI Accession number20153801290606
WOS IDWOS:000364349300009
Contribution Rank3
Funding OrganizationNational Natural Science Foundation of China(41406043, 41406002, and 61233013), National Basic Research Program of China(2013CB956502), and the Fundamental Research Funds for the Central Universities.
KeywordSea Surface Cooling Sea-wing Underwater Glider Mixed Layer Depth Heat Budget
Abstract

Based on 26 days of Chinese Sea-wing underwater glider measurements and satellite microwave data, we documented cooling of the upper mixed layer of the ocean in response to changes in the wind in the Northern South China Sea (NSCS) from September 19, 2014, to October 15, 2014. The Sea-wing underwater glider measured 177 profiles of temperature, salinity, and pressure within a 55km×55km area, and reached a depth of 1000m at a temporal resolution of ~4h. The study area experienced two cooling events, Cooling I and Cooling II, according to their timing. During Cooling I, water temperature at 1-m depth (T1) decreased by ~1.0°C, and the corresponding satellite-derived surface winds increased locally by 4.2m/s. During Cooling II, T1 decreased sharply by 1.7°C within a period of 4 days; sea surface winds increased by 7m/s and covered the entire NSCS. The corresponding mixed layer depth (MLD) deepened sharply from 30m to 60m during Cooling II, and remained steady during Cooling I. We estimated temperature tendencies using a ML model. High resolution Sea-wing underwater glider measurements provided an estimation of MLD migration, allowing us to obtain the temporal entrainment rate of cool sub-thermocline water. Quantitative analysis confirmed that the entrainment rate and latent heat flux were the two major components that regulated cooling of the ML, and that the Ekman advection and sensible heat flux were small.

Language英语
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectOceanography
WOS KeywordUPPER OCEAN RESPONSE ; MIXED-LAYER DEPTH ; INDIAN-OCEAN ; CIRCULATION
WOS Research AreaOceanography
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/16976
Collection水下机器人研究室
Corresponding AuthorMao HB(毛华斌)
Affiliation1.The Center for Coastal Ocean Science and Technology, School of Marine Sciences, Sun Yat-sen University, China
2.State key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, China
3.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, China
4.Sanya Institute of Deep-sea Science of Engineering, Chinese Academy of Sciences, China
5.Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, China
Recommended Citation
GB/T 7714
Qiu CH,Mao HB,Yu JC,et al. Sea surface cooling in the Northern South China Sea observed using Chinese sea-wing underwater glider measurements[J]. Deep-Sea Research Part I: Oceanographic Research Papers,2015,105:111-118.
APA Qiu CH.,Mao HB.,Yu JC.,Xie, Qiang.,Wu, Jiaxue.,...&Liu, Qinyan.(2015).Sea surface cooling in the Northern South China Sea observed using Chinese sea-wing underwater glider measurements.Deep-Sea Research Part I: Oceanographic Research Papers,105,111-118.
MLA Qiu CH,et al."Sea surface cooling in the Northern South China Sea observed using Chinese sea-wing underwater glider measurements".Deep-Sea Research Part I: Oceanographic Research Papers 105(2015):111-118.
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