---
title: GFES Wave 0 Downloader
emoji: 🌍
colorFrom: pink
colorTo: gray
sdk: gradio
pinned: false
license: cc-by-4.0
---

## Wave Dataset Downloader

This Space now provides a Gradio dashboard that keeps a local cache of the latest NOAA wave datasets. It first tries the GEFS Wave control member (`c00`, “wave 0”) via the Azure mirror and NOMADS; if no ensemble cycle is available, it automatically falls back to the operational GFS Wave global 0.25° product served from NOMADS and the NCEP Polar site. Use the interface to:

- Inspect the current downloader status and metadata for the newest available cycle.
- Trigger a refresh to fetch a more recent cycle if one has been published.
- Download a `.tar.gz` archive containing every `global.0p25` GRIB2 file for that cycle.

Data is stored under `data/gefswave` (configurable via `GEFS_WAVE_DATA_DIR`). You can optionally supply an Azure SAS token with `GEFS_AZURE_SAS_TOKEN`; otherwise, the downloader will request one from the Planetary Computer API when needed. Logs in the UI show which source was used and how many cycles were checked.