Subtropical mode water variability in a climatologically forced model in the northwestern Pacific Ocean
Subtropical mode water variability in a climatologically forced model in the northwestern Pacific Ocean
复制标题
西北太平洋气候强迫模型中的副热带模式水变率
DOI：
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发表时间：
2012
期刊：
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通讯作者：
M. Maltrud
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作者：
E. Douglass;S. Jayne;Synte Peacock;F. Bryan;M. Maltrud
利用一个气候强迫的高分辨率模式研究了西北太平洋副热带模态水（STMW）的变化。尽管使用每年重复的大气强迫，显着的年际到年代际变化是显而易见的体积，温度和年龄的STMW在该地区形成。这种长时间尺度的变化是海洋固有的。STMW的形成和特性与自然界中观察到的相当。STMW被发现是冷却器，密度大，在东部比在西部浅，但这些属性的时间变化一般是相关的整个水质量。形成被发现发生在黑潮延伸区以南，形成后STMW向西平流，如所示的输送流函数。采用理想年龄法和氯氟烃示踪法分析了短链微波炉的生命周期。在整个模型运行中，STMW的平均年龄为4.1岁，但在这一点上有很强的地理变化，…
AbstractA climatologically forced high-resolution model is used to examine variability of subtropical mode water (STMW) in the northwestern Pacific Ocean. Despite the use of annually repeating atmospheric forcing, significant interannual to decadal variability is evident in the volume, temperature, and age of STMW formed in the region. This long time-scale variability is intrinsic to the ocean. The formation and characteristics of STMW are comparable to those observed in nature. STMW is found to be cooler, denser, and shallower in the east than in the west, but time variations in these properties are generally correlated across the full water mass. Formation is found to occur south of the Kuroshio Extension, and after formation STMW is advected westward, as shown by the transport streamfunction. The ideal age and chlorofluorocarbon tracers are used to analyze the life cycle of STMW. Over the full model run, the average age of STMW is found to be 4.1 yr, but there is strong geographical variation in this, ...