Sentinel-2 Methane Enhancement Detection

Earth observation methane detection workflow that searches a STAC API for Sentinel-2 L1C scenes over a bbox and time range, pairs matching L2A scenes when available, applies a SWIR-band (B11/B12) matched-filter detector per scene, and aggregates per-scene results into time-signal outputs. Supports multiple STAC backends (Element84 Earth Search, Copernicus Data Space Ecosystem, EarthDaily) and emits a STAC Catalog containing methane enhancement heatmaps as Cloud-Optimized GeoTIFFs, PNG previews, and JSON statistics.