Remote effects of tropical cyclone wind forcing over the western Pacific on the eastern equatorial ocean

IOCAS-IR > 海洋环流与波动重点实验室

	Remote effects of tropical cyclone wind forcing over the western Pacific on the eastern equatorial ocean
	Zhang Ronghua; Pei Yuhua; Chen Dake
	2013-11
发表期刊	ADVANCES IN ATMOSPHERIC SCIENCES
卷号	30 期号:6 页码:1507-1525
摘要	An ocean general circulation model (OGCM) is used to demonstrate remote effects of tropical cyclone wind (TCW) forcing in the tropical Pacific. The signature of TCW forcing is explicitly extracted using a locally weighted quadratic least-squares regression (called as LOESS) method from six-hour satellite surface wind data; the extracted TCW component can then be additionally taken into account or not in ocean modeling, allowing isolation of its effects on the ocean in a clean and clear way. In this paper, seasonally varying TCW fields in year 2008 are extracted from satellite data which are prescribed as a repeated annual cycle over the western Pacific regions off the equator (poleward of 10A degrees N/S); two long-term OGCM experiments are performed and compared, one with the TCW forcing part included additionally and the other not. Large, persistent thermal perturbations (cooling in the mixed layer (ML) and warming in the thermocline) are induced locally in the western tropical Pacific, which are seen to spread with the mean ocean circulation pathways around the tropical basin. In particular, a remote ocean response emerges in the eastern equatorial Pacific to the prescribed off-equatorial TCW forcing, characterized by a cooling in the mixed layer and a warming in the thermocline. Heat budget analyses indicate that the vertical mixing is a dominant process responsible for the SST cooling in the eastern equatorial Pacific. Further studies are clearly needed to demonstrate the significance of these results in a coupled ocean-atmosphere modeling context.
关键词	Tropical Cyclone Wind Forcing Ocean Modeling Remote Effects Ocean Pathway Satellite Data Nino-southern Oscillation Mixed-layer Model Fresh-water Flux El-nino North Pacific Hurricane Enso Variability Simulation Intensity
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/18188
专题	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Zhang Ronghua,Pei Yuhua,Chen Dake. Remote effects of tropical cyclone wind forcing over the western Pacific on the eastern equatorial ocean[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2013,30(6):1507-1525.
APA	Zhang Ronghua,Pei Yuhua,&Chen Dake.(2013).Remote effects of tropical cyclone wind forcing over the western Pacific on the eastern equatorial ocean.ADVANCES IN ATMOSPHERIC SCIENCES,30(6),1507-1525.
MLA	Zhang Ronghua,et al."Remote effects of tropical cyclone wind forcing over the western Pacific on the eastern equatorial ocean".ADVANCES IN ATMOSPHERIC SCIENCES 30.6(2013):1507-1525.

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