CATS2008: Circum-Antarctic Tidal Simulation version 2008

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.

CATS2008是一款适用于环南极海域的区域反演式正压潮汐模型，网格分辨率为4千米。该模型的计算域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卫星反演得到的接地线一致，同时采用合成孔径雷达干涉测量（Interferometric Synthetic Aperture Radar, InSAR）得到的接地线数据。开阔水域的水深图参考Smith与Sandwell[1997；《科学》]2007年更新版本制作，并在多个区域进行了修正：例如拉森-C冰架前方的开阔大陆架区域，已与通用大洋测深图集（General Bathymetric Chart of the Oceans, GEBCO）的测深数据进行融合调整。

模型类型：仅模拟潮汐；反演模式（含数据同化）；正压模式（海流无垂直变化）。
网格：4千米均匀极立体投影（投影中心位于南纬71°、西经70°）。
潮汐分潮组分：M2、S2、N2、K2、K1、O1、P1、Q1、Mf、Mm。
单位：z（海面高度，单位：米）；u、v（海流流速，单位：厘米/秒）；U、V（深度积分输运通量，单位：平方米/秒）。
坐标定义：海流分量（u、v）与深度积分输运通量（U、V）均以东向（u、U）与北向（v、V）分量形式给出。
引用说明："……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。