Copernicus Sentinel-5P data products

Copernicus Sentinel-5P data products

Learn more about the available Copernicus Sentinel-5P data products, and how to obtain them.

Products are freely available via the Copernicus Open Access Hub.

Data Products

Sentinel-5 Precursor Level 2 NPP Cloud

Sentinel-5 Precursor Level 2 NPP Cloud

(L2__NP_BDx, x=3, 6, 7)

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The TROPOMI instrument onboard Sentinel-5 Precursor (S5P) is a nadir-viewing, imaging spectrometer covering wavelength bands between the ultraviolet and the shortwave infrared. The instrument uses passive remote sensing techniques to attain its objective by measuring, at the Top Of Atmosphere (TOA), the solar radiation reflected by and radiated from the earth.

The S5P level 2 methane product is dependent on having information on cloud occurrence at spatial resolution finer than that achievable from TROPOMI itself. This information is also useful for other purposes, including assessing the influence of cloud on other L2 products and issues related to spatial co-registration. A level 2 auxiliary product was therefore developed to describe cloud in the TROPOMI field of view (FOV), using co-located observations of VIIRS (Visible Infra-red Imaging Radiometer Suite) on the U.S. S-NPP (Suomi - National Polar-orbiting Partnership). S5P flies in a so-called loose formation with the S-NPP with a temporal separation between them of less than 5 minutes.

The main information contained in the S5P-NPP product is:

  1. A statistical summary for each S5P FOV of the NPP-VIIRS L2 Cloud Mask (VCM).
  2. The mean and standard deviation of the sun-normalised radiance in a number of VIIRS moderate resolution bands.

This information is provided for three S5P spectral bands (to account for differences in spatial sampling).



Data Set Specifications

Temporal coverage: Since 04-May-2018
Spatial coverage: ~2600 km swath. Full daily surface coverage for latitudes > 7° and < -7°, and better than 95 % coverage for latitudes in the interval [-7°, 7°].
Spatial resolution:

3.5 x 7.0 Km (across x along track), at beginning of mission

3.5 x 5.5 Km (across x along track), since 6 August 2019
Processor Version: 01.xx.xx, with x=any digit between 0 and 9




Processing Level


Level 2




How to access this data


Accessible via the Copernicus Open Access Hub.






Technical Documentation on TROPOMI CO Product:

  • PRF-NPP (Product Readme File): description of changes between different product versions and overall quality information)
  • PUM-NPP (Product User Information - information on the technical characteristics of the S5P-NPP Cloud products)
  • ATBD-NPP (Algorithm Theoretical Basis Document - detailed information on the algorithm of S5P-NPP products).

Technical Documentation on other TROPOMI Level 1B and L2 Products:

Other Copernicus Sentinel-5 Precursor/TROPOMI documents:

Documents related to S-NPP VIIRS instrument:




Related Datasets


The Products and Algorithms page contain links to other S5P/TROPOMI datasets (click on the corresponding product type).




Data Citation Guidelines


Users, who, in their research, use ESA Earth Observation data that have been assigned a DOI, are asked to use it when citing the data source in their publications:

Copernicus Sentinel-5P - U.S. Suomi NPP (processed by ESA), 2019, S5P-NPP Level 2 Cloud products. Version 01. European Space Agency.

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