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|Title: ||西北太平洋及其邊緣海之颱風 --- 海洋交互作用與內波之研究 --- 子計畫：颱風前後海洋環境參數變化之研究|
A Study of Variations of Oceanic Parameters before and after Typhoon Pass By
|Contributors: ||NTOU:Department of Marine Environmental Informatics|
|Issue Date: ||2011-06-28T08:44:30Z
abstract:We use multi-satellite remote sensing data and Regional Ocean Model System (ROMS) to examine the physical and biological responses to Typhoon Nakri during a period from 1 to 8 June 2008 in the western North Pacific. From satellite observations, we find remarkable surface cooling (~5°C) and distinct phytoplankton enhancement after Nakri passage. It is interesting to note that in contrast to the well-documented rightward bias of the surface cooling response, the maximum biological response to Nakri occurred on the left of the Nakri’s track rather than the right side, where the most distinct cooling response occurred. To reveal the dynamic mechanism for this unusual phenomenon, we have done numerical experiments with and without the influence of preexisting cyclonic circulation and previous typhoon. The results from simulations show that both the physical and biological responses to Nakri are greatly affected by the preexisting cyclonic circulations. The discrepancy between the locations of maximum physical and biological responses mainly results from the advanced uplift and current advection of nutrient fields by previous typhoon Rammasun, which passed through the area about two weeks before Nakri.
|Appears in Collections:||[海洋環境資訊系] 研究計畫|
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