NOAA Wave Ensemble Reforecast

Description

This is a 20-year global wave reforecast generated by WAVEWATCH III model (https://github.com/NOAA-EMC/WW3) forced by GEFSv12 winds (https://noaa-gefs-retrospective.s3.amazonaws.com/index.html). The wave ensemble was run with one cycle per day (at 03Z), spatial resolution of 0.25°X0.25° and temporal resolution of 3 hours. There are five ensemble members (control plus four perturbed members) and, once a week (Wednesdays), the ensemble is expanded to eleven members. The forecast range is 16 days and, once a week (Wednesdays), it extends to 35 days. More information about the wave modeling, wave grids and calibration can be found in the WAVEWATCH III regtest ww3_ufs1.3 (https://github.com/NOAA-EMC/WW3/tree/develop/regtests/ww3_ufs1.3).

The 20 years of reforecast results were analyzed and quality-controlled. Three output types are available

1. Global wave fields, in grib2 format, with several variables including significant wave height, period, direction, and partitions;
   
2. Point output tables, in netcdf format, containing time-series of significant wave height, period and direction, for 658 points (latitude/longitude informed) at the positions of wave buoys; and,
   
3. For the same positions, spectral outputs are available, in netcdf format, containing the full spectra (2D directional spectrum).
   Each file refers to one forecast cycle with date (year, month, day) written in the file name.
   
   This effort has been funded by a NOAA OAR/NWS Service Level Agreement (SLA) whereby NOAA/OAR supports R&D and transition needed for mission delivery of climate services within NWS. The SLA project is led by NWS/NCEP/Ocean Prediction Center in collaboration with NWS/NCEP/Environmental Modeling Center and NWS/NCEP/Climate Prediction Center. This is a project also in cooperation with NOAA’s Atlantic Oceanographic and Meteorological Laboratory (AOML) and the University of Miami’s Cooperative Institute for Marine and Atmospheric Studies (CIMAS).
   
   The following github repository has examples and scripts to support users to download, visualize, and process the WAVEWATCH III output files
   
   https://github.com/ricampos/gefswaves_reforecast
   
   The reforecast simulations were generated on the supercomputer Orion, which is funded via a grant from NOAA to support research activities in environmental modeling, including weather modeling and simulation
   
   https://www.noaa.gov/organization/information-technology/orion

Update Frequency

Quarterly

License

NOAA data disseminated through NODD is made available under the Creative Commons 1.0 Universal Public Domain Dedication (CC0-1.0) license, which is well-known and internationally recognized. There are no restrictions on the use of the data. The data are open to the public and can be used as desired.

NOAA has adopted the Creative Commons license to ensure maximum use of our data, to spur and encourage exploration and innovation throughout the industry. This license is applicable to each of the NOAA datasets made available by NODD. NOAA requests attribution for the use or dissemination of unaltered NOAA data. However, it is not permissible to state or imply endorsement by or affiliation with NOAA. If you modify NOAA data, you may not state or imply that it is original, unaltered NOAA data.

Documentation

https://github.com/NOAA-EMC/gefswaves_reforecast/wiki
https://github.com/NOAA-EMC/gefswaves_reforecast

Managed By

See all datasets managed by NOAA.

Contact

For questions related to wave modeling and the ensemble reforecast available, please contact Ricardo Martins Campos, email ricardo.campos@noaa.gov.

For any questions regarding data delivery not associated with this platform or any general questions regarding the NOAA Open Data Dissemination Program, email nodd@noaa.gov. We also seek to identify case studies on how NOAA data is being used and will be featuring those stories in joint publications and in upcoming events. If you are interested in seeing your story highlighted, please share it with the NOAA NODD team at nodd@noaa.gov.

How to Cite

NOAA Wave Ensemble Reforecast was accessed on DATE from https://registry.opendata.aws/noaa-wave-ensemble-reforecast.

Usage Examples

Tutorials

• Examples and scripts to support users to download, visualize, and process the WAVEWATCH III output files by Ricardo Campos