Sentinel-5P TROPOMI Aerosol Index 1-Orbit L2 7km x 3.5km V1 (S5P_L2__AER_AI) at GES DISC

Starting from August 6th in 2019, Sentinel-5P TROPOMI along-track high spatial resolution (~5.5km at nadir) has been implemented. For data after August 6th of 2019, please check S5P_L2__AER_AI data collection.

The Copernicus Sentinel-5 Precursor (Sentinel-5P or S5P) satellite mission is one of the European Space Agency's (ESA) new mission family - Sentinels, and it is a joint initiative between the Kingdom of the Netherlands and the ESA. The sole payload on Sentinel-5P is the TROPOspheric Monitoring Instrument (TROPOMI), which is a nadir-viewing 108 degree Field-of-View push-broom grating hyperspectral spectrometer, covering the wavelength of ultraviolet-visible (UV-VIS, 270nm to 495nm), near infrared (NIR, 675nm to 775nm), and shortwave infrared (SWIR, 2305nm-2385nm). Sentinel-5P is the first of the Atmospheric Composition Sentinels and is expected to provide measurements of ozone, NO2, SO2, CH4, CO, formaldehyde, aerosols and cloud at high spatial, temporal and spectral resolutions.

The TROPOMI UV Aerosol Index has been calculated based on wavelength dependent changes in Rayleigh scattering in the UV spectral range where ozone absorption is weak. A residual value is calculated from measured top-of-atmosphere (TOA) reflectance and per-calculated theoretical reflectance for a Rayleigh scattering-only atmosphere given a wavelength pair. TROPOMI UVAI products use the classical wavelength pair of 340/380 nm, and the OMI chosen 354/388 nm pair for the long-term continuous AI record. Figure 1 shows TROPOMI UVAI of orbit# 4060.

Data and Resources

Additional Info

Field Value
Maintainer Pepijn Veefkind
Last Updated July 17, 2025, 16:22 (UTC)
Created March 31, 2025, 21:22 (UTC)
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation Copernicus Sentinel data processed by ESA, Koninklijk Nederlands Meteorologisch Instituut (KNMI). 2018-08-23. S5P_L2__AER_AI. Version 1. Sentinel-5P TROPOMI Aerosol Index 1-Orbit L2 7km x 3.5km. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://doi.org/10.5270/S5P-0wafvaf. https://disc.gsfc.nasa.gov/datacollection/S5P_L2__AER_AI_1.html. Digital Science Data.
creator Copernicus Sentinel data processed by ESA, Koninklijk Nederlands Meteorologisch Instituut (KNMI)
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/S5P_OFFL_L2__AER_AI_1.png
harvest_object_id 475cde26-efdf-48c4-9bf6-4d265c8b8e7d
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C1442068490-GES_DISC
issued 2017-05-05
landingPage https://doi.org/10.5270/S5P-0wafvaf
language {en-US}
metadata_type geospatial
modified 2017-05-05
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name S5P_L2__AER_AI
source_datajson_identifier true
source_hash 19566c86d9b583f50c874ea3c82187aa8e989ee28824232c3bdbb8fe8616cd3a
source_schema_version 1.1
spatial -180.0 -90.0 180.0 90.0
temporal 2018-06-28T00:00:00Z/2022-01-17T00:00:00Z
theme {Sentinel-5P,geospatial}