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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Subtropical mode water variation in the northwestern part of the North Pacific subtropical gyre
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Subtropical mode water variation in the northwestern part of the North Pacific subtropical gyre

机译:北太平洋副热带环流西北部的亚热带模式水变化

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Temporal variations of the North Pacific subtropical mode water (NPSTMW) are studied with the proper temporal resolution for describing seasonal variation using monthly hydrographic data taken near the Ogasawara Islands. NPSTMW is formed south of the Kuroshio and the Kuroshio Extension in late winter and advected to the Ogasawara site by the southwestward/westward return flow of the Kuroshio recirculation. While NPSTMW is seen at the Ogasawara site in almost all seasons, NPSTMW with a higher core temperature is advected to this site in April, and one with a colder core follows in and after June until January or February. Furthermore, the NPSTMW core temperature shows considerable interannual variation. This variation is very similar to that found in other regions away from the Ogasawara site, suggesting that it reflects the larger-scale variation of NPSTMW and that this site would be suitable for monitoring the NPSTMW core temperature. A significant correlation between the NPSTMW core temperature and the monsoon index, which is defined as the difference in the sea level pressure between Nemuro, Japan, and Irkutsk, Russia, as an indicator of wintertime cooling, indicates that NPSTMW contains a memory of wintertime cooling in the preceding winter. [References: 21]
机译:使用小gas原群岛附近每月的水文数据,以适当的时间分辨率研究了北太平洋亚热带模式水(NPSTMW)的时间变化,以描述季节变化。 NPSTMW于冬季末在黑潮和黑潮扩展区的南侧形成,并通过黑潮循环的西南/西向回流而流向小site原。尽管在几乎所有季节都在小gas原站点看到了NPSTMW,但在4月份对这一地点的中心温度较高的NPSTMW进行了平移,随后在6月及之后的1月或2月则出现了中心温度较低的NPSTMW。此外,NPSTMW核心温度显示出很大的年际变化。这种变化与在小gas原站点以外的其他区域中发现的变化非常相似,表明它反映了NPSTMW的较大尺度变化,并且该站点将适合监视NPSTMW核心温度。 NPSTMW核心温度与季风指数之间存在显着相关性,季风指数被定义为日本Nemuro和俄罗斯伊尔库茨克之间的海平面压力之差,以作为冬季降温的指标,表明NPSTMW包含对冬季降温的记忆在之前的冬天。 [参考:21]

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