Changes of North Pacific Intermediate Water properties in the subtropical gyre
Changes of North Pacific Intermediate Water properties in the subtropical gyre
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副热带环流北太平洋中层水性质的变化
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
M. Fukasawa
中科院分区：
文献类型：
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作者：
S. Kouketsu;I. Kaneko;T. Kawano;H. Uchida;T. Doi;M. Fukasawa
跨太平洋水文观测的比较揭示了20世纪80年代和90年代至21世纪初北太平洋副热带环流中北太平洋中层水（NPIW）性质的变化。盐度下降的密度表面以上的NPIW盐度最低和盐度最低以下增加。NPIW核的位温升高了0.10 ~ 0.17°C，但盐度变化不大。中性表面上的盐度变化的模式是一致的密度减少的NPIW核心。这表明，NPIW核心的性质变化可以解释为NPIW变暖。
A comparison of trans‐Pacific hydrographic observations revealed changes in properties of North Pacific Intermediate Water (NPIW) in the subtropical gyre of the North Pacific from 1980s and 1990s to 2000s. Salinities decreased on density surfaces above the NPIW salinity minimum and increased below the salinity minimum. The potential temperature of the NPIW core increased by 0.10 – 0.17°C, although the salinity of NPIW core did not change substantially. The pattern of salinity changes on neutral surfaces was consistent with a density decrease of the NPIW core. It is suggested that the property changes of the NPIW core can be explained by NPIW warming.