GHG Detection App
Select location, choose a date, pick satellite, and run analysis.
CH4 Methane
NOx Nitrogen Oxides
The Time Series tab charts whichever species is selected here.
1
Select Location
Draw an AOI on the map using the polygon tool, or use the search bar to find a location
2
Choose Satellite & Date
All
Sentinel-2
Sentinel-5P
VIIRS
Landsat-8
Landsat-9
Set location and date range, then click "Search Available Images"
Selected for Analysis:
-
3
Parameters & Analysis
Data Sources & Attribution
▼
Satellite Data
- Sentinel-2 - Copernicus Programme, European Space Agency (ESA)
- Sentinel-5P - Copernicus Programme, ESA/KNMI
- Landsat-8/9 - USGS/NASA Landsat Program
- VIIRS - NASA/NOAA Suomi NPP & JPSS
Algorithms
- SWIR-band LUT Methane Detection - Pandey, S., van Nistelrooij, M., Maasakkers, J. D., et al. (2023). Daily detection and quantification of methane leaks using Sentinel-3. Remote Sensing of Environment, 296, 113716.
- NOx Detection (SBMP + CSF) - Varon, D.J., Jervis, D., Pandey, S., Gallardo, S.L., Balasus, N., Yang, L.H., and Jacob, D.J. (2024). Quantifying NOx point sources with Landsat and Sentinel-2 satellite observations of NO2 plumes. Proceedings of the National Academy of Sciences, 121(27), e2317077121.
Ancillary Data
- ERA5 Wind Data - ECMWF Copernicus Climate Data Store
- SRTM Elevation - NASA Shuttle Radar Topography Mission
- ESA WorldCover - ESA Climate Change Initiative
- Cloud Score+ - Google Earth Engine
Platform & Tools
- Google Earth Engine - Cloud computing platform
- Leaflet.js - Open-source mapping library
- OpenStreetMap - Map data © OSM contributors
This application is developed for research and educational purposes. All satellite data is provided under respective agency data policies.