nakas/NWPS_SWAN

🌊 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

1. 1.Global GRIB Data: Click "Fetch Global Wave Data" to download worldwide wave information
2. 2.Single Location: Use "Fetch Location Wave Data" for specific coordinates
3. 3.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.