DOI: 10.1175/JCLI-D-13-00090.1
Scopus记录号: 2-s2.0-84902096334
论文题名: The impact of surface mixing on the arctic river water distribution and stratification in a global ice-ocean model
作者: Komuro Y.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 12 起始页码: 4359
结束页码: 4370
语种: 英语
Scopus关键词: Mixing
; Sea ice
; Water supply systems
; Diapycnal mixing
; Ice-ocean models
; Orders of magnitude
; Salinity stratification
; Sea-ice components
; Surface salinities
; Vertical diffusivity
; Vertical structures
; Oceanography
; arctic environment
; global ocean
; ice thickness
; ice-ocean interaction
; numerical method
; river water
; runoff
; salinity
; sea ice
; stratification
; vertical mixing
; Arctic Ocean
英文摘要: The impact of oceanic vertical mixing on the near-surface vertical structure of the Arctic Ocean is investigated in a global ice-ocean model with a passive tracer. Lowering surface background vertical diffusivity and ignoring the effects of surface wave breaking under sea ice improves the model simulation of the horizontal Arctic river water distribution. This improvement is largely responsible for the freshening of the Arctic surface salinity in the model. Although these modifications in the model vertical mixing scheme are applied over the whole global ocean, the change in the surface salinity over the Arctic is larger than that in the rest of the global ocean by one to two orders of magnitude. In contrast, when a reduced background vertical diffusivity is used at all depths, the Arctic vertical salinity stratification is improved below the surface as well as in the surface layer, but the vertical structure and deep circulation in the rest of the global ocean are also strongly affected. Weaker surface vertical mixing in the Arctic Ocean also causes sea ice to thicken even without changes in the parameters for the sea ice component. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51445
Appears in Collections: 气候变化事实与影响
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作者单位: Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan
Recommended Citation:
Komuro Y.. The impact of surface mixing on the arctic river water distribution and stratification in a global ice-ocean model[J]. Journal of Climate,2014-01-01,27(12)