globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-15-0592.1
Scopus记录号: 2-s2.0-84957812825
论文题名:
Winter atmospheric buoyancy forcing and oceanic response during strong wind events around southeastern Greenland in the Regional Arctic System Model (RASM) for 1990-2010
作者: DuVivier A.K.; Cassano J.J.; Craig A.; Hamman J.; Maslowski W.; Nijssen B.; Osinski R.; Roberts A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期:3
起始页码: 975
结束页码: 994
语种: 英语
Scopus关键词: Air ; Buoyancy ; Climate models ; Conformal mapping ; Oceanography ; Self organizing maps ; Training aircraft ; Wind ; Arctic ; Atmosphere-ocean interactions ; Coupled models ; Geographic location ; Oceanic mixed layers ; Regional model ; Atmospheric thermodynamics ; air-sea interaction ; atmosphere-ocean coupling ; buoyancy forcing ; convective system ; latent heat flux ; sensible heat flux ; turbulent boundary layer ; wind field ; winter ; Arctic ; Arctic ; Atlantic Ocean ; Greenland ; Irminger Sea ; Labrador Sea
英文摘要: Strong, mesoscale tip jets and barrier winds that occur along the southeastern Greenland coast have the potential to impact deep convection in the Irminger Sea. The self-organizing map (SOM) training algorithm was used to identify 12 wind patterns that represent the range of winter [November-March (NDJFM)] wind regimes identified in the fully coupled Regional Arctic System Model (RASM) during 1990-2010. For all wind patterns, the ocean loses buoyancy, primarily through the turbulent sensible and latent heat fluxes; haline contributions to buoyancy change were found to be insignificant compared to the thermal contributions. Patterns with westerly winds at the Cape Farewell area had the largest buoyancy loss over the Irminger and Labrador Seas due to large turbulent fluxes from strong winds and the advection of anomalously cold, dry air over the warmer ocean. Similar to observations, RASM simulated typical ocean mixed layer depths (MLD) of approximately 400 m throughout the Irminger basin, with individual years experiencing MLDs of 800 m or greater. The ocean mixed layer deepens over most of the Irminger Sea following wind events with northerly flow, and the deepening is greater for patterns of longer duration. Seasonal deepest MLD is strongly and positively correlated to the frequency of westerly tip jets with northerly flow. © 2016 American Meteorological Society.
资助项目: DOD, Norsk Sykepleierforbund ; NSF, Norsk Sykepleierforbund ; DOE, Norsk Sykepleierforbund ; DOE, Norsk Sykepleierforbund ; DOE, Norsk Sykepleierforbund ; DOE, Norsk Sykepleierforbund ; DOE, Norsk Sykepleierforbund ; NSF, Norsk Sykepleierforbund
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50246
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作者单位: Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Boulder, CO, United States; Naval Postgraduate School, Monterey, CA, United States; Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States; Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland

Recommended Citation:
DuVivier A.K.,Cassano J.J.,Craig A.,et al. Winter atmospheric buoyancy forcing and oceanic response during strong wind events around southeastern Greenland in the Regional Arctic System Model (RASM) for 1990-2010[J]. Journal of Climate,2016-01-01,29(3)
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