Impacts of Typhoons on the Kuroshio Large Meander: Observation Evidences

Details Impacts of Typhoons on the Kuroshio Large Meander: Observation Evidences Impacts of Typhoons on the Kuroshio Large Meander: Observation Evidences

2008-10-22

arxiv.org/abs/0810.4029v2

Sun, L., Y.-J. Yang, and Y.-F. Fu, 2009: Impacts of typhoons on the Kuroshio large meander: Observation evidences, Atmos. Ocea

Physics

Atmospheric and Oceanic Physics

3 figures

Scientific paper

The formation of the Kuroshio large meander in summer 2004 was investigated by using the cruise data, Argo profiles data, and satellite remote sensing data. We validated the point that cyclonic eddy contributes to the large meander. Besides, the impacts of typhoons on Kuroshio meanders were studied. From 29 July to 4 August, the typhoons stirred the ocean and upwelled the deep water, which enhanced the existed cyclonic eddy, and immediately made a drastic meander of the Kuroshio. Moreover, the unexpected typhoons in June 2004 also contributed to the initial meander at Tokara Strait. The result suggests an alternative meander mechanism of Kuroshio path via typhoon-eddy-Kuroshio interactions. It is argued that typhoons accompanied with cyclonic eddies, might play crucial roles in meanders of the Kuroshio. This will provide a more comprehensive understanding of the dynamics of the west boundary flows like the Kuroshio and the Gulf Stream, and will be useful in eddy-resolution models.

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