CATS2008: Circum-Antarctic Tidal Simulation version 2008

Abstract: CATS2008 is a regional inverse barotropic tide model for the circum-Antarctic ocean on a 4 km grid. The model domain includes ocean cavities under the floating ice shelves. The coastline is based on the MODIS MOA [Scambos et al., 2007; Remote Sensing of Environment] feature identification files, adjusted to match ICESat-derived grounding lines for the Ross and Filchner-Ronne ice shelves and Interferometric Synthetic Aperture Radar (InSAR) grounding lines. The water depth map for open water is based on the 2007 release update to Smith and Sandwell [1997; Science]. Adjustments to this map have been made in various regions, including the open continental shelf in front of the Larsen-C Ice Shelf which has been blended with GEBCO bathymetry. Model type: Tides only; Inverse (data assimilation); barotropic (no vertical variation of currents) Grid: 4-km uniform polar stereographic (centered at 71 degrees S, 70 degrees W) Constituents: M2, S2, N2, K2, K1, O1, P1, Q1, Mf, Mm Units: z (sea surface height; meters); u,v (currents; cm/s); U,V (transports; m2/s) Coordinates: Currents (u, v) and depth-integrated transports (U, V) are given as East (u, U) and North (v, V) components Citation: “… an update to the inverse model described by Padman et al. [2002].” See CATS2008_README.pdf for further details.摘要：CATS2008是一款面向环南极海域的4千米网格尺度区域正压潮汐反演模型。该模型的模拟范围涵盖浮动冰架下方的海洋空腔。海岸线数据基于MODIS MOA[Scambos等，2007；《环境遥感》]的特征识别文件，并针对罗斯冰架与菲尔希纳-龙尼冰架调整为与ICESat获取的接地线（grounding line）匹配，同时采用了干涉合成孔径雷达（Interferometric Synthetic Aperture Radar，InSAR）的接地线数据。开阔水域的水深图基于2007年更新版的Smith与Sandwell[1997；《科学》]数据集，并在多个区域进行了修正，其中拉森-C冰架前方的开阔大陆架区域已与GEBCO测深数据进行融合。 模型类型：仅支持潮汐模拟；反演模式（数据同化）；正压模型（海流无垂直变化） 网格：4千米均匀极球面投影（中心位于南纬71°、西经70°） 潮汐分潮：M2、S2、N2、K2、K1、O1、P1、Q1、Mf、Mm 单位：z（海面高度；米）；u、v（海流流速；厘米/秒）；U、V（输运通量；平方米/秒） 坐标：海流分量（u, v）与深度积分输运通量（U, V）分别以东向（u, U）与北向（v, V）分量形式给出 引用格式：“……本模型为Padman等人[2002]所描述的反演模型的更新版本。” 更多详细信息请参阅CATS2008_README.pdf。