| DOI: | 10.1175/JCLI-D-18-0415.1
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| Scopus记录号: | 2-s2.0-85059610088
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| 论文题名: | Storm track response to oceanic eddies in idealized atmospheric simulations |
| 作者: | Foussard A.; Lapeyre G.; Plougonven R.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2019
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| 卷: | 32, 期:2 | | 起始页码: | 445
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| 结束页码: | 463
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| 语种: | 英语
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| 英文关键词: | Atmosphere-ocean interaction
; Dynamics
; Storm tracks
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| Scopus关键词: | Atmospheric boundary layer
; Atmospheric movements
; Atmospheric thermodynamics
; Dynamics
; Heating
; Storms
; Surface waters
; Troposphere
; Additional heating
; Atmosphere-ocean interactions
; Atmospheric simulations
; Convective heating
; Heat budget analysis
; Sea surface temperature anomalies
; Storm track
; Western boundary currents
; Oceanography
; air-sea interaction
; atmospheric dynamics
; eddy
; heat budget
; heating
; midlatitude environment
; sea surface temperature
; storm track
; temperature anomaly
; troposphere
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| 英文摘要: | Large-scale oceanic fronts, such as in western boundary currents, have been shown to play an important role in the dynamics of atmospheric storm tracks. Little is known about the influence of mesoscale oceanic eddies on the free troposphere, although their imprint on the atmospheric boundary layer is well documented. The present study investigates the response of the tropospheric storm track to the presence of sea surface temperature (SST) anomalies associated with an eddying ocean. Idealized experiments are carried out in a configuration of a zonally reentrant channel representing the midlatitudes. The SST field is composed of a large-scale zonally symmetric front to which are added mesoscale eddies localized close to the front. Numerical simulations show a robust signal of a poleward shift of the storm track and of the tropospheric eddydriven jet when oceanic eddies are taken into account. This is accompanied by more intense air-sea fluxes and convective heating above oceanic eddies. Also, a mean heating of the troposphere occurs poleward of the oceanic eddying region, within the storm track. A heat budget analysis shows that it is caused by a stronger diabatic heating within storms associated with more water advected poleward. This additional heating affects the baroclinicity of the flow, which pushes the jet and the storm track poleward. © 2018 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/117258
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| Appears in Collections: | 气候变化与战略
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| Recommended Citation: | |
Foussard A.,Lapeyre G.,Plougonven R.. Storm track response to oceanic eddies in idealized atmospheric simulations[J]. Journal of Climate,2019-01-01,32(2)
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