DOI: 10.1175/JCLI-D-16-0086.1
Scopus记录号: 2-s2.0-85008192114
论文题名: An investigation of the stability dependence of SST-induced vertical mixing over the ocean in the operational met office model
作者: Song Q. ; Chelton D.B. ; Esbensen S.K. ; Brown A.R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 1 起始页码: 91
结束页码: 107
语种: 英语
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Boundary layers
; Convergence of numerical methods
; Mixing
; Parameterization
; Satellites
; Stability
; Surface properties
; Surface waters
; Weather forecasting
; Wind
; Air sea interactions
; Atmosphere-ocean interactions
; Marine boundary layers
; Numerical weather prediction models
; Sea surface temperature (SST)
; Sea-surface wind speed
; Surface temperatures
; Weather research and forecasting models
; Oceanography
英文摘要: This study presents an assessment of the impact of a March 2006 change in the Met Office operational global numerical weather prediction model through the introduction of a nonlocal momentum mixing scheme. From comparisons with satellite observations of surface wind speed and sea surface temperature (SST), it is concluded that the new parameterization had a relatively minor impact on SST-induced changes in sea surface wind speed in the Met Office model in the September and October 2007 monthly averages over the Agulhas Return Current region considered here. The performance of the new parameterization of vertical mixing was evaluated near the surface layer and further through comparisons with results obtained using a wide range of sensitivity of mixing parameterization to stability in the Weather Research and Forecasting (WRF) Model, which is easily adapted to such sensitivity studies. While the new parameterization of vertical mixing improves the Met Office model response to SST in highly unstable (convective) conditions, it is concluded that significantly enhanced vertical mixing in the neutral to moderately unstable conditions (nondimensional stability between 0 and -2) typically found over the ocean is required in order for the model surface wind response to SST to match the satellite observations. Likewise, the reduced mixing in stable conditions in the new parameterization is also relatively small; for the range of the gradient Richardson number typically found over the ocean, the mixing was reduced by a maximum of only 10%, which is too small by more than an order of magnitude to be consistent with the satellite observations. © 2017 American Meteorological Society. 资助项目: NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49858
Appears in Collections: 气候变化事实与影响
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作者单位: National Satellite Ocean Application Service, Beijing, China; Key Laboratory of Space Ocean Remote Sensing and Application, SOA, Beijing, China; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; Met Office, Exeter, United Kingdom
Recommended Citation:
Song Q.,Chelton D.B.,Esbensen S.K.,et al. An investigation of the stability dependence of SST-induced vertical mixing over the ocean in the operational met office model[J]. Journal of Climate,2017-01-01,30(1)