Scopus记录号: 2-s2.0-84907060525
论文题名: The potential roles of background surface wind in the SST variability associated with intraseasonal oscillations
作者: Kanemaru K. ; Masunaga H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 18 起始页码: 7053
结束页码: 7068
语种: 英语
Scopus关键词: Atmospheric temperature
; Budget control
; Climate change
; Heat flux
; Latent heat
; Oceanography
; Surface waters
; Composite analysis
; Intraseasonal oscillations
; Meridional winds
; Northern indian oceans
; Ocean mixed layers
; Sea surface temperature (SST)
; Seasonal characteristics
; Seasonal migration
; Tropical engineering
; atmospheric convection
; easterly wave
; heat budget
; latent heat flux
; meridional circulation
; mixed layer
; sea surface temperature
; seasonality
; surface wind
; temperature anomaly
; westerly
; Indian Ocean
; Indian Ocean (North)
英文摘要: The current study is aimed at exploring the potential roles of the seasonally altering background surface wind in the seasonality of the intraseasonal oscillations (ISOs) with a focus on the sea surface temperature (SST) variability. A composite analysis of the ocean mixed layer heat budget in term of ISO phases with various satellite data is performed for boreal winter and summer. The scalar wind is found to be a dominant factor that accounts for the ocean surface heat budget, implying that the background surface wind as well as its anomaly is important for the SST variability. An easterly anomaly to the east of convection diminishes scalar wind, and thus latent heat flux, when superposed onto a background westerly wind, implying that the presence of basic westerly wind is important for the development of a warm SST anomaly ahead of the ISO convection. On the other hand, an easterly anomaly in combination with basic easterly wind magnifies scalar wind and latent heat flux and cancels out the shortwave heat flux anomaly. The seasonal migration of the background westerly wind, which is confined to a southern equatorial belt in boreal winter but spread across the northern Indian Ocean in boreal summer, may offer a mechanism that partly accounts for the seasonal characteristics of ISO propagation. The northward propagation of the SST variability associated with the boreal summer ISO is found to also involve a similar mechanism with the meridional wind modulation of scalar wind. © 2014 American Meteorological Society. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51155
Appears in Collections: 气候变化事实与影响
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作者单位: Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; Hydrospheric Atmospheric Research Center, Nagoya University, Nagoya, Japan
Recommended Citation:
Kanemaru K.,Masunaga H.. The potential roles of background surface wind in the SST variability associated with intraseasonal oscillations[J]. Journal of Climate,2014-01-01,27(18)