AbstractThis study is on high-frequency temporal variability (HFV) and meso-scale spatial variability (MSV) of '/> High-frequency and meso-scale winter sea-ice variability in the Southern Ocean in a high-resolution global ocean model
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High-frequency and meso-scale winter sea-ice variability in the Southern Ocean in a high-resolution global ocean model

机译：高分辨率全球海洋模型中南大洋的高频和中尺度冬季海冰变化

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AbstractThis study is on high-frequency temporal variability (HFV) and meso-scale spatial variability (MSV) of winter sea-ice drift in the Southern Ocean simulated with a global high-resolution (0.1°) sea ice-ocean model. Hourly model output is used to distinguish MSV characteristics via patterns of mean kinetic energy (MKE) and turbulent kinetic energy (TKE) of ice drift, surface currents, and wind stress, and HFV characteristics via time series of raw variables and correlations. We find that (1) along the ice edge, the MSV of ice drift coincides with that of surface currents, in particular such due to ocean eddies; (2) along the coast, the MKE of ice drift is substantially larger than its TKE and coincides with the MKE of wind stress; (3) in the interior of the ice pack, the TKE of ice drift is larger than its MKE, mostly following the TKE pattern of wind stress; (4) the HFV of ice drift is dominated by weather events, and, in the absence of tidal currents, locally and to a much smaller degree by inertial oscillations; (5) along the ice edge, the curl of the ice drift is highly correlated with that of surface currents, mostly reflecting the impact of ocean eddies. Where ocean eddies occur and the ice is relatively thin, ice velocity is characterized by enhanced relative vorticity, largely matching that of surface currents. Along the ice edge, ocean eddies produce distinct ice filaments, the realism of which is largely confirmed by high-resolution satellite passive-microwave data.
机译： Abstract 这项研究是针对高频时间变异（HFV）和中尺度使用全球高分辨率（0.1°）海冰海洋模型模拟了南大洋冬季海冰漂移的空间变异性（MSV）。每小时模型输出用于通过冰漂移，表面流和风应力的平均动能（MKE）和湍动能（TKE）的模式来区分MSV特征，并通过原始变量和相关性的时间序列来区分HFV特征。我们发现（1）沿着冰边缘，冰漂移的MSV与地表水流的MSV相吻合，特别是由于海洋涡流造成的； （2）沿海岸，冰漂移的MKE远大于其TKE，并且与风应力的MKE相符； （3）在冰袋内部，冰漂移的TKE大于其MKE，主要遵循风应力的TKE模式； （4）冰漂的HFV主要受天气事件的影响，在没有潮流的情况下，局部和较小程度的由惯性振荡引起； （5）沿冰边缘，冰漂移的卷曲与地表水流高度相关，主要反映了海洋涡流的影响。在发生海洋涡流且冰相对稀薄的地方，冰速的特征是相对涡度增强，与地表水流基本匹配。沿冰边缘，海洋涡流产生独特的冰丝，其真实性在很大程度上被高分辨率卫星被动微波数据所证实。

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