CCI+P HCHO tropospheric column L3 data from OMI, v2

OMI level-3 gridded tropospheric HCHO column, version 2.

Monthly grids at spatial resolution of 0.125°x0.125°. Daily grids at spatial resolution of 0.25°x0.25°.

Based on the OMI Level 2 Formaldehyde Total Column product created for the ESA CCI (European Space Agency Climate Change Initiative) Precursors for aerosols and ozone projet. https://climate.esa.int/en/projects/precursors-for-aerosols-and-ozone/.

Compare to the QA4ECV product, the air mass factors have been reprocessed using an update aldebo climatology, and the CAMS Reanalysis Model for the a priori vertical profiles. The background correction and the quality values have also been updated.

In addition to the main product results, such as HCHO slant column, vertical column and air mass factor, the level 3 data files contain several additional parameters and diagnostic information such as uncertainties, a priori profiles and averaging kernels.

Created for the ESA CCI ozone and aerosol precursors project.

Data and Resources

Tags

Cite this as (APA format)

De Smedt, I., Vlietinck, J., YU, H., Theys, N., Danckaert, T., & Van Roozendael, M. (2025). CCI+P HCHO tropospheric column L3 data from OMI, v2 (Version 2) [Data set]. Royal Belgian Institute for Space Aeronomy. https://doi.org/10.18758/BF145884
Retrieved: 14:55 24 Jan 2026 (UTC)
Users of this DOI are kindly encouraged to contact the author(s) for help and cooperation towards further successful utilisation.

Author(s)
Principal

De Smedt, Isabelleorcid, Royal Belgian Institute for Space Aeronomy
Other(s)

Vlietinck, Jonasorcid, Royal Belgian Institute for Space Aeronomy; YU, Huanorcid, Royal Belgian Institute for Space Aeronomy; Theys, Nicolasorcid, Royal Belgian Institute for Space Aeronomy; Danckaert, Thomasorcid, Royal Belgian Institute for Space Aeronomy; Van Roozendael, Michelorcid, Royal Belgian Institute for Space Aeronomy;
Contact data-contact of Royal Belgian Institute for Space Aeronomy

Technical info
Documentation
Is derived from (sources,...)

https://doi.org/10.18758/71021031

Temporal features
Starting

01/01/2005
Ending

31/12/2022
Temporal resolution

P1M, P1D

Additional info
Funding details

https://climate.esa.int/en/projects/precursors-for-aerosols-and-ozone/
Conforms to

CF standard, HARP compliant
Repository homepage

https://data.aeronomie.be/dataset/
Last Updated

September 19, 2025
Created

April 24, 2025

Spatial features

Resolution (m): 0.125°x0.125°, 0.25°x0.25°