We’ve published a new high-resolution wave hindcast for New Zealand on Datamesh, Oceanum.io’s environmental data platform.
The dataset covers the full New Zealand domain at 5km resolution, with nine nested 1km grids over key coastal regions: Auckland, Tauranga, Hawke Bay, Waikato, Taranaki, Cook Strait, Canterbury, Otago, and Southland. The record runs hourly from 1993 to 2026.
A few things that set it apart:
- Bathymetry from GEBCO 2025
- ERA5 wind forcing
- Currents combining Oceanum’s high-resolution New Zealand tidal constituent model with Copernicus ocean reanalysis surface currents, so wave-current interaction is properly accounted for throughout
Outputs include 38 integrated wave parameters per grid, plus full 2D frequency-direction spectra at over 5,000 sites, all hourly, across the parent domain and every coastal nest.
All grids and spectra can be accessed through the Datamesh UI, the Python client, or directly via our APIs. Full dataset description here:
https://datasets.oceanum.io/oceanum_new_zealand_era5_wave_hindcast.html
#OceanData #CoastalEngineering #WaveModelling
