Gr1kmTM: Greenland 1 kilometer Tide Model, 2021

The Greenland 1 kilometer Tide Model (Gr1kmTM) is a barotropic ocean tide model on a 1 km x 1 km polar stereographic grid, developed using the Regional Ocean Modeling System (ROMS). Gr1kmTM consists of spatial grids of complex amplitude coefficients for sea surface height and depth-integrated currents (“volume transports”) for 8 principal tidal constituents: 4 semidiurnal (M2, S2, K2, N2) and 4 diurnal (K1, O1, P1, Q1). See the Methods section for a description of model development. The Gr1kmTM gridded files are in binary format (see Gr1kmTM_FileFormat.pdf) and are designed to be used with the open-source software packages: the Matlab “Tide Model Driver” (TMD) toolbox, the Python “pyTMD” package, and the FORTRAN “OSU Tidal Prediction Software” (OTPS). These packages allow the user to browse the model for different constituents, and to make tidal predictions for any time at any location within the model domain. Please also check the ESR Polar Tide Model webpage (https://www.esr.org/research/polar-tide-models/) and our Arctic Data Center Portal (https://arcticdata.io/catalog/portals/ArcticTides) for other Arctic-region barotropic tide models and more information on software packages.