DOI: 10.1175/JCLI-D-16-0055.1
Scopus记录号: 2-s2.0-85022319977
论文题名: Atmospheric responses and feedback to the meridional ocean heat transport in the North Pacific
作者: Tatebe H. ; Kurogi M. ; Hasumi H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 15 起始页码: 5715
结束页码: 5728
语种: 英语
Scopus关键词: Atmospheric movements
; Atmospheric thermodynamics
; Climate models
; Feedback
; Heat flux
; Heat transfer
; Meteorology
; Ocean currents
; Storms
; Atmosphere-ocean interactions
; Atmospheric circulation
; Eastern north pacific
; Regional ocean modeling
; Sea surface temperature (SST)
; Storm track
; Western boundary currents
; Western North Pacific
; Oceanography
英文摘要: Atmospheric responses and feedback to meridional ocean heat transport (OHT) have been investigated using a global climate model that is interactively connected with a high-resolution regional ocean model embedded in the western North Pacific. Compared with a global climate model without the regional model, the net heat supply into the Kuroshio-Oyashio Extension (KOE) region is increased as a result of the increase of the mean northward ocean heat transport (OHT) by the western boundary currents and mesoscale eddies. Resultant sea surface temperature (SST) rise sharpens the meridional SST gradient and reinforces the cross-frontal difference of the surface heat flux and thereby enhances lower-tropospheric baroclinicity. These changes cause northward deflection and strengthening of the wintertime storm track over the North Pacific, which leads to the Pacific-North American (PNA)-like pattern anticyclonic response of the mean westerly jet. The increase of the eddy northward atmospheric heat flux (AHF) associated with the enhanced storm-track activity is compensated by the decrease of the mean northward AHF. The changes of the atmospheric circulations reduce the mean northward OHT in the eastern North Pacific that compensates the increase of the mean northward OHT in the KOE region. The atmospheric responses, which have once been excited by the SST fronts in the KOE region, stabilize the trans-North Pacific OHT. The modeling results herein suggest that basinwide Bjerknes-like compensation works in air-sea coupled processes for the formation of the climatic mean state in the North Pacific. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48759
Appears in Collections: 气候减缓与适应 气候变化与战略
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作者单位: Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan
Recommended Citation:
Tatebe H.,Kurogi M.,Hasumi H.. Atmospheric responses and feedback to the meridional ocean heat transport in the North Pacific[J]. Journal of Climate,2017-01-01,30(15)