Intrinsic Variability of Sea Level from Global Ocean Simulations: Spatiotemporal Scales
Intrinsic Variability of Sea Level from Global Ocean Simulations: Spatiotemporal Scales
复制标题
全球海洋模拟中海平面的内在变化：时空尺度
DOI：
10.1175/jcli-d-14-00554.1
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发表时间：
2015
影响因子：
4.9
通讯作者：
L. Terray
中科院分区：
文献类型：
--
作者：
G. Sérazin;T. Penduff;S. Grégorio;B. Barnier;J. Molines;L. Terray
在高分辨率海洋环流模式（OGCM）中，与面向过程的模式一样，海洋非线性自发地产生了大量的年际到年代际变率：也就是说，在这些时间尺度上，大气强迫没有任何变率。作者调查的时间和空间尺度上，这种内在的海洋变化有最强的印记海平面异常（SLA）使用°全球OGCM，通过比较“后报”驱动的全范围的大气时间尺度与其对应的强迫重复的气候大气季节循环。从两个模拟的输出进行比较，在不同的频率波数箱。完全强迫的后报显示，非常准确地再现所观察到的分布和幅度的低频SLA的变化。小尺度（L < 6°）SLA方差在所有时间尺度上对大气变率几乎不敏感，几乎完全是内在的。高...
AbstractIn high-resolution ocean general circulation models (OGCMs), as in process-oriented models, a substantial amount of interannual to decadal variability is generated spontaneously by oceanic nonlinearities: that is, without any variability in the atmospheric forcing at these time scales. The authors investigate the temporal and spatial scales at which this intrinsic oceanic variability has the strongest imprints on sea level anomalies (SLAs) using a ° global OGCM, by comparing a “hindcast” driven by the full range of atmospheric time scales with its counterpart forced by a repeated climatological atmospheric seasonal cycle. Outputs from both simulations are compared within distinct frequency–wavenumber bins. The fully forced hindcast is shown to reproduce the observed distribution and magnitude of low-frequency SLA variability very accurately. The small-scale (L < 6°) SLA variance is, at all time scales, barely sensitive to atmospheric variability and is almost entirely of intrinsic origin. The high...
影响因子：
64.8
作者：
Gulev, Sergey K.;Latif, Mojib;Koltermann, Klaus Peter
通讯作者：
Koltermann, Klaus Peter
年际至数十年时间尺度上大西洋经向翻转环流的内在变化
影响因子：
3.5
作者：
Grégorio S
通讯作者：
Grégorio S