April 2024 WW3 output for Barents Sea Region
Description
This dataset contains several tar files with model output. One tar file contains model output colocated with buoy observations. The model is for the Barents Sea region. The model is WAVEWATCH III(R) (Tolman 1991, WW3DG 2019). The buoy data were north of Svalbard. The model runs and comparisons are described in this report: https://arxiv.org/abs/2508.16755 This report is approved for public release, distribution unlimited (DoD Distribution Statement A). Jie Yu (NRL 7322) and others are preparing a journal submission which also uses this dataset, being based on a subset of the work described in the report (specifically, this April 2024 Barents Sea model, and comparisons to observations). That journal submission will also be approved for public release, distribution unlimited (DoD Distribution Statement A). The tar files with COAMPS2 and COAMPS3 in the file name contain output from two models runs, “COAMPS2” and “COAMPS3”. (“COAMPS1” was a vanilla run with coarser forcing, so there is no reason to share it) COAMPS2 is from WW3 using IC4M9, a S_ice formula that has dependence on ice thickness (h_ice). It is calibrated for a different h_ice dataset than it is being applied to here. Inevitably, there will be systematic differences in the two h_ice products (they both come with major accuracy concerns), and probable need for new calibration. COAMPS3 is from WW3 with IC4M6, an “old fashioned” S_ice formula that has no dependence on ice thickness. It is for a thin cover of frazil and pancake ice. For COAMPS2 and COAMPS3, I provide the model output in three formats. You can choose the format you prefer. There is no need to download all three. • CGRID.E1D.nc : 1d spectra on computational grid in nc format. Big files • trck.E2D.nc : 2d spectra on buoy tracks (bounding points) in nc format. Medium size files • trck.E1D.mat : 1d spectra on buoy tracks (bounding points) in .mat format. Readable by Matlab or Octave. Small files. For COAMPS2, I provide 2 additional files. • CGRID.bulk.nc : nc files with bulk parameters, excluding model spinup period. Includes wave output (wave height, dominant direction, and integrated energy dissipation by sea ice) and regridded model forcing (ice fraction, ice thickness) • CGRID.spinup.nc : nc files with bulk parameters during model spinup. It includes the same parameters that are included in CGRID.bulk.nc, but the wave output should be disregarded, since it is during the spinup (invalid). COAMPS_Apr2024_colocations.tar.gz : this contains the colocations of model Hm0B with values computed from spectra measured by buoys north of Svalbard. Hm0B is the wave height computed from four different frequency bands (other names are "partial wave height" and "band height". The buoy data were provided by Jean Rabault and Malte Muller of the Norwegian Meteorological Service. A README provided in the tar file has additional details. The files are readable using Matlab or Octave. This is a very small tar file.
Files
Steps to reproduce
Steps are described in the linked report.