Currently available in AirLogic
The TROPOspheric Monitoring Instrument (TROPOMI) is on board the Sentinel-5 Precursor satellite launched on 13 October 2017 by the European Space Agency to monitor air pollution. The resolution is 7×3.5km^2/pixel and revisit is daily with a local overpass time of 13:30. TROPOMI measures the density of molecules in the vertical column between the sensor and the earth’s surface.
All of the TROPOMI datasets have two versions, Near Real-Time and Offline, with the exception of CH4 which is available as Offline only.
The images in the map and the column density metrics in the footer for a given date are calculated by taking the average intensity value for each pixel across all available images from the Near Real-Time and Offline versions. Currently available in AirLogic are NO2, CO, SO2, CH4, HCHO and Absorbing Aerosol Index (AAI) measurements starting from 06/28/2018 and updated every other day based on availability. More species are available upon request; please click on the information icon for a comprehensive list of Google Earth Engine layers which can be incorporated in AirLogic.
Satellite (Copernicus: Sentinel-5P)
Time Range Available:
June 2018 – Present
7 km x 3.5 km
Every Day (~1:30 pm local time)
In AirLogic, the default time period display is daily. In the case of TROPOMI and MODIS, the value displayed in the chart for a selected date corresponds to the satellite measurement at the local overpass time for that date. Setting the time period to monthly/quarterly you can obtain a monthly/quarterly rolling average for the selected metric.
Chemical Species Measured:
Absorbing Aerosol Index (AAI)
Oil & Gas