DOI: 10.1002/joc.5906
Scopus记录号: 2-s2.0-85056621607
论文题名: Assessing feedback of tropical instability wave-induced wind stress perturbations in the equatorial Pacific
作者: Wei Y. ; Pei Y. ; Kang X.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 3 起始页码: 1634
结束页码: 1643
语种: 英语
英文关键词: inverse method
; ROMS
; tropical instability waves
; wind stress feedback
Scopus关键词: Budget control
; Inverse problems
; ROM
; Surface waters
; Tropics
; Water waves
; Wind stress
; High-resolution ocean model
; Inverse methods
; Regional ocean modeling system
; Satellite observations
; Sea surface temperature (SST)
; Stress feedbacks
; Stress perturbations
; Tropical instability waves
; Oceanography
英文摘要: A close relationship between tropical instability wave (TIW)-induced sea surface temperature (SST) and wind stress (τ) perturbations (SST TIW and τ TIW , respectively) has been identified from satellite observations. In this study, we applied an empirical TIW-induced wind stress model (τ x , τ y ) TIW =F(SST) to assess τ TIW feedback. This empirical model solves (τ x , τ y ) TIW from TIW-induced wind stress divergence and curl estimated from time-evolving downwind and crosswind SST gradients. The empirical model is incorporated into a high-resolution ocean model based on the Regional Ocean Modeling System, and the derived (τ x , τ y ) TIW can be added onto the climatological component to force the ocean model, by which the effect of τ TIW can be taken into account adequately. From a comparison of two experiments with and without the τ TIW effect, the τ TIW had a substantial effect on the equatorial Pacific heat budget, which affected the long-term mean SST, representing an approximate 0.2°C difference. An SST budget analysis suggested that the τ TIW influenced SST primarily via thermal advection and vertical mixing, the effects of which were both amplified with additional τ TIW feedback and almost counteracted each other. Analysis of two additional sensitivity experiments suggested that both TIW-induced wind stress divergence and curl components could induce comparable SST differences, with a little difference on that the latter tended to induce more salient SST cooling at the equator. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116531
Appears in Collections: 全球变化的国际研究计划
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作者单位: State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China; College of Air Traffic Management, Civil Aviation Flight University of China, Guanghan, China
Recommended Citation:
Wei Y.,Pei Y.,Kang X.. Assessing feedback of tropical instability wave-induced wind stress perturbations in the equatorial Pacific[J]. International Journal of Climatology,2019-01-01,39(3)