globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068009
论文题名:
Seasonality of submesoscale flows in the ocean surface boundary layer
作者: Buckingham C.E.; Naveira Garabato A.C.; Thompson A.F.; Brannigan L.; Lazar A.; Marshall D.P.; George Nurser A.J.; Damerell G.; Heywood K.J.; Belcher S.E.
刊名: Geophysical Research Letters
ISSN: 0094-9313
EISSN: 1944-9044
出版年: 2016
卷: 43, 期:5
起始页码: 2118
结束页码: 2126
语种: 英语
英文关键词: instabilities ; mixed layer ; seasonal ; submesoscale ; turbulence ; vorticity
Scopus关键词: Atmospheric thermodynamics ; Boundary layer flow ; Boundary layers ; Higher order statistics ; Mixing ; Stability ; Turbulence ; Vorticity ; Interaction studies ; Mixed layer ; North East Atlantic ; Ocean submesoscale ; Relative vorticity ; Seasonal ; Seasonal variation ; Submesoscale ; Oceanography
英文摘要: A signature of submesoscale flows in the upper ocean is skewness in the distribution of relative vorticity. Expected to result for high Rossby number flows, such skewness has implications for mixing, dissipation, and stratification within the upper ocean. An array of moorings deployed in the Northeast Atlantic for 1 year as part of the experiment of the Ocean Surface Mixing, Ocean Submesoscale Interaction Study (OSMOSIS) reveals that relative vorticity is positively skewed during winter even though the scale of the Rossby number is less than 0.5. Furthermore, this skewness is reduced to zero during spring and autumn. There is also evidence of modest seasonal variations in the gradient Rossby number. The proposed mechanism by which relative vorticity is skewed is that the ratio of lateral to vertical buoyancy gradients, as summarized by the inverse gradient Richardson number, restricts its range during winter but less so at other times of the year. These results support recent observations and model simulations suggesting that the upper ocean is host to a seasonal cycle in submesoscale turbulence. © 2016. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960378307&doi=10.1002%2f2016GL068009&partnerID=40&md5=a3aecafce63dc10583014091779f75e3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10276
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Ocean and Earth Sciences, University of Southampton, Southampton, United Kingdom

Recommended Citation:
Buckingham C.E.,Naveira Garabato A.C.,Thompson A.F.,et al. Seasonality of submesoscale flows in the ocean surface boundary layer[J]. Geophysical Research Letters,2016-01-01,43(5).
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