DOI: 10.1002/2014GL061698
论文题名: Vertical mixing due to double diffusion in the tropical western Pacific
作者: Lee C. ; Chang K.-I. ; Lee J.H. ; Richards K.J.
刊名: Geophysical Research Letters
ISSN: 0094-9580
EISSN: 1944-9311
出版年: 2014
卷: 41, 期: 22 起始页码: 7964
结束页码: 7970
语种: 英语
英文关键词: double diffusion
; mixing
Scopus关键词: Buoyancy
; Kinetic energy
; Kinetics
; Mixing
; Turbulence models
; Buoyancy fluxes
; Dissipation rates
; Double diffusion
; Double diffusive
; Orders of magnitude
; Tropical Western Pacific
; Turbulent kinetic energy
; Vertical diffusivity
; Diffusion
; buoyancy
; diffusion
; dissipation
; kinetic energy
; magnitude
; numerical model
; temperature effect
; turbulence
; vertical mixing
; Pacific Ocean
; Pacific Ocean (Tropical)
英文摘要: This study calculates the vertical diffusivity and the fluxes of heat, salt, and buoyancy due to turbulence and double diffusion based on a 14 day time series of observations of the dissipation rates of turbulent kinetic energy and thermal variance at 0°N, 156°E from 25 October to 18 November 2012. Salt fingering dominates shear-driven turbulence below 100 m. The estimated flux and associated vertical diffusivity due to double diffusion are approximately 1 order of magnitude higher for temperature and density and 2 orders of magnitude higher for salinity compared to values calculated from a turbulence model. Under weak turbulence conditions, the turbulence model significantly underestimates the magnitude of the vertical buoyancy flux with the flux having the wrong sign. Under these conditions, fluxes induced by double-diffusive mixing need to be considered. © 2014. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923380979&doi=10.1002%2f2014GL061698&partnerID=40&md5=472b0355b6ede0c60f764a5dcfbd14ae
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6844
Appears in Collections: 气候减缓与适应
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作者单位: RIO/School of Earth and Environmental Science, Seoul National University, Seoul, South Korea
Recommended Citation:
Lee C.,Chang K.-I.,Lee J.H.,et al. Vertical mixing due to double diffusion in the tropical western Pacific[J]. Geophysical Research Letters,2014-01-01,41(22).