Learn more about the available Copernicus Sentinel-5P data products, and how to obtain them.
Products are freely available via the Copernicus Data Space Ecosystem.
Sentinel-5 Precursor Level 2 Formaldehyde
Sentinel-5 Precursor Level 2 Formaldehyde(L2__HCHO__) |
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The TROPOMI instrument onboard Sentinel-5 Precursor 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.
Formaldehyde is an intermediate gas in almost all oxidation chains of Non-Methane Volatile Organic Compounds (NMVOC), leading eventually to CO2. NMVOCs are, together with NOx, CO and CH4, among the most important precursors of tropospheric O3. The major HCHO source in the remote atmosphere is CH4 oxidation. Over the continents, the oxidation of higher NMVOCs emitted from vegetation, fires, traffic and industrial sources results in important and localised enhancements of the HCHO levels.
In addition to the main product results, such as HCHO slant column, vertical column and air mass factor, the level 2 data files contain several additional parameters and diagnostic information.
Data Set Specifications V2
| Temporal coverage: | Reprocessed (RPRO) dataset: since 07-05-2018 to 03-08-2022 |
| Spatial coverage: | ~2600 km swath. Full daily surface coverage of radiance and reflectance measurements 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
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| Processor Version: | 02.xx.xx, with x=any digit between 0 and 9 |
Data Set Specifications V1
| Temporal coverage: | From 14 May 2018 to 12 July 2020 |
| Spatial coverage: | ~2600 km swath. Full daily surface coverage of radiance and reflectance measurements 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
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| 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 Data Space Ecosystem.
Resources
Technical Documentation on TROPOMI HCHO Product:
- PRF-HCHO (Product Readme File - description of changes between different product versions and overall quality information).
- PUM-HCHO Dataset Version 2 - (Product User Information - information on the technical characteristics of the TROPOMI HCHO products)
- PUM-HCHO Dataset Version 1 - (Product User Information - information on the technical characteristics of the TROPOMI HCHO products)
- ATBD-HCHO Dataset Version 2 - (Algorithm Theoretical Basis Document - detailed information on the retrieval algorithm of TROPOMI HCHO products)
- ATBD-HCHO Dataset Version 1 - (Algorithm Theoretical Basis Document - detailed information on the retrieval algorithm of TROPOMI HCHO products)
- IODD-UPAS Dataset Version 2 - (Input Output Data definition - description of the input and output data of the TROPOMI HCHO product processing).
- IODD-UPAS Dataset Version 1 - (Input Output Data definition - description of the input and output data of the TROPOMI HCHO product processing).
Technical Documentation on other TROPOMI Level 1B and L2 Products:
Other Copernicus Sentinel-5 Precursor/TROPOMI documents:
Related Datasets
The Products and Algorithms page contains links to other S5P/TROPOMI datasets (click on the corresponding product type).
Data Citation Guidelines V2
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 (processed by ESA), 2020, TROPOMI Level 2 Formaldehyde Total Column products. Version 02. European Space Agency. https://doi.org/10.5270/S5P-vg1i7t0
Data Citation Guidelines V1
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 (processed by ESA), 2018, TROPOMI Level 2 Formaldehyde Total Column products. Version 01. European Space Agency. https://doi.org/10.5270/S5P-tjlxfd2