globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-13-00123.1
Scopus记录号: 2-s2.0-84892525420
论文题名:
Investigating the role of ocean-atmosphere coupling in the North Pacific ocean
作者: Smirnov D.; Newman M.; Alexander M.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期:2
起始页码: 592
结束页码: 606
语种: 英语
Scopus关键词: Air sea interactions ; Air temperature ; Auto regressive models ; Control simulation ; Fully-coupled ; North Pacific Ocean ; Ocean-atmosphere ; Sea surface temperature (SST) ; Atmospheric temperature ; Ocean currents ; Computer simulation ; air temperature ; air-sea interaction ; atmosphere-ocean coupling ; climate modeling ; data set ; model validation ; sea surface temperature ; zonal wind ; Kuroshio Extension ; Oyashio Current ; Pacific Ocean ; Pacific Ocean (North)
英文摘要: Air-sea interaction over the North Pacific is diagnosed using a simple, local coupled autoregressive model constructed from observed 7-day running-mean sea surface temperature (SST) and 2-m air temperature TA anomalies during the extended winter from the 1° × 1° objectively analyzed air-sea fluxes (OAFlux) dataset. Though the model is constructed from 1-week lag statistics, it successfully reproduces the observed anomaly evolution through lead times of 90 days, allowing an estimation of the relative roles of coupling and internal atmospheric and oceanic forcing upon North Pacific SSTs. It is found that east of the date line, SST variability is maintained by, but has little effect on, TA variability. However, in the Kuroshio-Oyashio confluence and extension region, about half of the SST variability is independent of TA, driven instead by SST noise forcing internal to the ocean. Including surface zonal winds in the analysis does not alter this conclusion, suggesting TA adequately represents the atmosphere. Repeating the analysis with the output of two control simulations from a fully coupled global climate model (GCM) differing only in their ocean resolution yields qualitatively similar results. However, for the simulation employing the coarse-resolution (1°) ocean model, all SST variability depends upon TA, apparently caused by a near absence of ocean-induced noise forcing. Collectively, these results imply that a strong contribution from internal oceanic forcing drives SST variability in the Kuroshio-Oyashio region, which may be used as a justification for atmosphericGCMexperiments forced with SST anomalies in that region alone. This conclusion is unaffected by increasing the dimensionality of the model to allow for intrabasin interaction. © 2014 American Meteorological Society.
资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51177
Appears in Collections:气候变化事实与影响

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作者单位: CIRES, University of Colorado at Boulder, NOAA/Earth System Research Laboratory, Boulder, CO, United States; NOAA/Earth System Research Laboratory, Boulder, CO, United States

Recommended Citation:
Smirnov D.,Newman M.,Alexander M.A.. Investigating the role of ocean-atmosphere coupling in the North Pacific ocean[J]. Journal of Climate,2014-01-01,27(2)
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