Mechanisms of the disappearance of sea surface temperature fronts in the subtropical North Pacific Ocean
Qiu, CH; Kawamura, H; Mao, HB; Wu, JX; wujiaxue@mail.sysu.edu.cn
2014
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
卷号119期号:7页码:4389-4398
摘要The disappearance mechanisms of subtropical sea surface temperature (SST) fronts occurring from May to August were examined quantitatively using a simple mixed-layer model. Weekly 2.5 degrees data sets were matched up between satellite and in situ observations, including cloud-free SST from Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) and Global Temperature and Salinity Profile Program (GTSPP) data. A 1.5 mixed-layer model used in this study assumed that the temporal variation of the SST gradient was controlled by the resultant effect among the net heat flux, temperature advection (including Ekman and geostrophic), and the temperature entrainment at the bottom of the mixed layer. The net heat flux was found to provide a dominant contribution to the weakening of the SST front (decreasing SST gradient), while the temperature advection and the bottom entrainment were relatively weak. Decomposition of the net heat flux revealed that the meridional gradient of the latent heat flux is a direct factor in the weakening of the SST front, while the shortwave radiation could have indirect effects. The meridional gradient of the latent heat flux is induced by southerly winds, which in turn causes the weakening and disappearance of the SST front. Comparison of weekly and monthly averaged SST gradient modeling results with in situ observations demonstrated that the weekly SST gradient in the model agrees closely with AMSR-E observations, but there was a large difference between the monthly SST gradient in the model and in the observations.
部门归属[Qiu, Chunhua ; Wu, Jiaxue] Sun Yat Sen Univ, Sch Marine Sci, Ctr Coastal Ocean Sci & Technol, Guangzhou 510275, Guangdong, Peoples R China ; [Qiu, Chunhua ; Kawamura, Hiroshi] Tohoku Univ, Grad Sch Sci, Ctr Atmospher & Ocean Studies, Sendai, Miyagi 980, Japan ; [Mao, Huabin] Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
学科领域Oceanography
资助者National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202] ; National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202] ; National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202] ; National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202]
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收录类别sci
资助项目LTO
资助者National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202] ; National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202] ; National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202] ; National Basic Research Program of China [2013CB956502]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1302]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11010202]
WOS记录号WOS:000340415500022
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10532
专题热带海洋环境国家重点实验室(LTO)
通讯作者wujiaxue@mail.sysu.edu.cn
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Qiu, CH,Kawamura, H,Mao, HB,et al. Mechanisms of the disappearance of sea surface temperature fronts in the subtropical North Pacific Ocean[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2014,119(7):4389-4398.
APA Qiu, CH,Kawamura, H,Mao, HB,Wu, JX,&wujiaxue@mail.sysu.edu.cn.(2014).Mechanisms of the disappearance of sea surface temperature fronts in the subtropical North Pacific Ocean.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,119(7),4389-4398.
MLA Qiu, CH,et al."Mechanisms of the disappearance of sea surface temperature fronts in the subtropical North Pacific Ocean".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 119.7(2014):4389-4398.
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