metadata
title: NWPS SWAN Wave Data Puller
emoji: 🌊
colorFrom: blue
colorTo: green
sdk: docker
pinned: false
license: gpl-3.0
app_port: 7860
tags:
- oceanography
- wave-data
- grib
- arctic
- meteorology
🌊 NWPS SWAN Wave Data Puller
A comprehensive wave data extraction and visualization tool that fetches real-time wave data from global meteorological sources including ECMWF and NOAA.
Features
- Global GRIB Data: Worldwide wave heights from ECMWF/NOAA GRIB files
- Arctic Support: Advanced Arctic wave data extraction with multiple fallback methods
- Interactive Maps: Real-time wave height visualization with Folium maps
- Single Location Data: NWPS SWAN model data for specific locations
- Data Export: JSON export functionality for analysis
Arctic Data Extraction
This application includes advanced Arctic wave data extraction capabilities that handle the common ECCODES polar stereographic projection errors. The system automatically:
- Attempts multiple extraction methods (pygrib, wgrib2, CDO)
- Provides fallback methods for problematic Arctic GRIB files
- Returns data in standardized format regardless of extraction method
Usage
- Global GRIB Data: Click "Fetch Global Wave Data" to download worldwide wave information
- Single Location: Use "Fetch Location Wave Data" for specific coordinates
- Data Files: View and analyze previously downloaded data files
Technical Details
- Built with Gradio for interactive web interface
- Uses pygrib, cfgrib, and xarray for GRIB file processing
- Folium maps for visualization
- Docker containerized for consistent deployment
Error Handling
The application gracefully handles:
- ECCODES polar stereographic errors in Arctic regions
- Temporary server unavailability
- Invalid GRIB files
- Network connectivity issues
Only real government/institutional wave data is supported - no synthetic data.