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New layer thickness parameterization of diffusive convection in the ocean
Zhou, Sheng-Qi; Lu, Yuan-Zheng; Song, Xue-Long; Fer, Ilker; Zhou, SQ (reprint author), South China Sea Inst Oceanol, State Key Lab Trop Oceanog, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China.
2016
Source PublicationDYNAMICS OF ATMOSPHERES AND OCEANS
Volume73Pages:87-97
AbstractIn the present study, a new parameterization is proposed to describe the convecting layer thickness in diffusive convection. By using in situ observational data of diffusive convection in the lakes and oceans, a wide range of stratification and buoyancy flux is obtained, where the buoyancy frequency N varies between 10(-4) and 0.1 s(-1) and the heat -related buoyancy flux qT varies between 10(-12) and 10(-7) m(2) s(-3). We construct an intrinsic thickness scale, H-0 = [q(T)(3)/(KTN8)](1/4), here k(T), is the thermal diffusivity. H-0 is suggested to be the scale of an energy -containing eddy and it can be alternatively represented as H-0 = eta RebPr1/4, here eta is the dissipation length scale, Re-b is the buoyant Reynolds number, and Pr is the Prandtl number. It is found that the convective layer thickness H is directly linked to the stability ratio R-rho and H-0 with the form of H similar to(R-rho-1)H-2(0). The layer thickness can be explained by the convective instability mechanism. To each convective layer, its thickness H reaches a stable value when its thermal boundary layer develops to be a new convecting layer. (C) 2016 Elsevier B.V. All rights reserved.
Department[Zhou, Sheng-Qi; Lu, Yuan-Zheng; Song, Xue-Long] South China Sea Inst Oceanol, State Key Lab Trop Oceanog, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China; [Lu, Yuan-Zheng] Univ Chinese Acad Sci, Beijing 100101, Peoples R China; [Song, Xue-Long] Guilin Univ Elect Technol, Sch Marine Informat Engn, Beihai 536000, Peoples R China; [Fer, Ilker] Univ Bergen, Inst Geophys, Bergen, Norway ; LTO
KeywordDiffusive Convection Convecting Layer Thickness Parameterization
Subject AreaGeochemistry & Geophysics ; Meteorology & Atmospheric Sciences ; Oceanography
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15557
Collection热带海洋环境国家重点实验室(LTO)
Corresponding AuthorZhou, SQ (reprint author), South China Sea Inst Oceanol, State Key Lab Trop Oceanog, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China.
Recommended Citation
GB/T 7714
Zhou, Sheng-Qi,Lu, Yuan-Zheng,Song, Xue-Long,et al. New layer thickness parameterization of diffusive convection in the ocean[J]. DYNAMICS OF ATMOSPHERES AND OCEANS,2016,73:87-97.
APA Zhou, Sheng-Qi,Lu, Yuan-Zheng,Song, Xue-Long,Fer, Ilker,&Zhou, SQ .(2016).New layer thickness parameterization of diffusive convection in the ocean.DYNAMICS OF ATMOSPHERES AND OCEANS,73,87-97.
MLA Zhou, Sheng-Qi,et al."New layer thickness parameterization of diffusive convection in the ocean".DYNAMICS OF ATMOSPHERES AND OCEANS 73(2016):87-97.
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