Dataset Information
CATS2008: Circum-Antarctic Tidal Simulation version 2008
Data DOI:
Cite as
Howard, S. L., Erofeeva, S., & Padman, L. (2019) "CATS2008: Circum-Antarctic Tidal Simulation version 2008" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
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.
Howard, Susan L.; Padman, Laurence; Erofeeva, Svetlana
Date Created:
USAP-DC (current)
Spatial Extent(s)
West: -180, East: 180, South: -90, North: -40.231
  1. Padman, L., H. A. Fricker, R. Coleman, S. Howard, and S. Erofeeva (2002), A new tidal model for the Antarctic ice shelves and seas, Ann. Glaciol., 34, 247-254. (doi:10.3189/172756402781817752)
  2. Padman, L., L. Erofeeva, and H. A. Fricker (2008), Improving Antarctic tide models by assimilation of ICESat laser altimetry over ice shelves, Geophys. Res. Lett., 35, L22504. (doi:10.1029/2008GL035592)
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