DOI: 10.1175/JCLI-D-11-00230.1
Scopus记录号: 2-s2.0-84867668996
论文题名: Covariability of surface wind and stress responses to sea surface temperature fronts
作者: O'Neill L.W. ; Chelton D.B. ; Esbensen S.K.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 17 起始页码: 5916
结束页码: 5942
语种: 英语
Scopus关键词: Advanced microwave scanning radiometer
; Advanced microwave scanning radiometer for earth observing systems
; Algebraic manipulations
; Aqua satellites
; Atmosphere-ocean interactions
; Geographic variability
; Kuroshio
; Mesoscale
; Mesoscale process
; Neutral winds
; Non-linear relationships
; Nonlinear functions
; QuikSCAT
; Return current
; Satellite observations
; Scatterometers
; Sea surface temperature (SST)
; Sea surface temperature fronts
; Seasonal variability
; South Atlantic
; Spatial variations
; SST perturbations
; Stress perturbations
; Stress response
; Surface winds
; Atmospheric temperature
; Meteorological instruments
; Ocean currents
; Radiometers
; Wind stress
; air-sea interaction
; AMSR-E
; Aqua (satellite)
; mesoscale meteorology
; QuikSCAT
; sea surface temperature
; surface wind
; wind stress
; Agulhas Current
; Atlantic Ocean
; Atlantic Ocean (North)
; Atlantic Ocean (South)
; Indian Ocean
; Kuroshio Current
; Pacific Ocean
英文摘要: The responses of surface wind and wind stress to spatial variations of sea surface temperature (SST) are investigated using satellite observations of the surface wind from the Quick Scatterometer (QuikSCAT) and SST from the Advanced Microwave Scanning Radiometer on the Advanced Microwave Scanning Radiometer for Earth Observing System (EOS) (AMSR-E) Aqua satellite. This analysis considers the 7-yr period June 2002-May 2009 during which both instruments were operating. Attention is focused in the Kuroshio, North and South Atlantic, and Agulhas Return Current regions. Since scatterometer wind stresses are computed solely as a nonlinear function of the scatterometer-derived 10-m equivalent neutral wind speed (ENW), qualitatively similar responses of the stress and ENW to SST are expected. However, the responses are found to be more complicated on the oceanic mesoscale. First, the stress and ENW are both approximately linearly related to SST, despite a nonlinear relationship between them. Second, the stress response to SST is 2 to 5 times stronger during winter compared to summer, while the ENW response to SST exhibits relatively little seasonal variability. Finally, the stress response to SST can be strong in regions where the ENW response is weak and vice versa. A straightforward algebraic manipulation shows that the stress perturbations are directly proportional to the ENW perturbations multiplied by a nonlinear function of the ambient large-scale ENW. This proportionality explains why both the stress and ENW depend linearly on the mesoscale SST perturbations, while the dependence of the stress perturbations on the ambient large-scaleENWexplains both the seasonal pulsing and the geographic variability of the stress response to SST compared with the less variable ENW response. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52246
Appears in Collections: 气候变化事实与影响
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作者单位: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; Cooperative Institute for Oceanographic Satellite Studies, Oregon State University, Corvallis, OR, United States
Recommended Citation:
O'Neill L.W.,Chelton D.B.,Esbensen S.K.. Covariability of surface wind and stress responses to sea surface temperature fronts[J]. Journal of Climate,2012-01-01,25(17)