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Dataset

 

ESA Precursors for Aerosols and Ozone Climate Climate Change Initiative (Precursors_cci): TROPOMI monthly mean level 3 tropospheric nitrogen dioxide (NO2) version 1.0

Update Frequency: Not Planned
Latest Data Update: 2025-09-29
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2026-04-01
Download Stats: last 12 months
Dataset Size: 177 Files | 21GB
Abstract

The dataset was produced as part of the European Space Agency (ESA) Climate Change Initiative+ (CCI+) precursors for aerosols and ozone project by the Royal Netherlands Meteorological Institute (KNMI).

TROPOspheric Monitoring Instrument (TROPOMI) global tropospheric nitrogen dioxide (NO2) spatiotemporally averaged per month over a standard grid from May 2018 to December 2021. The dataset is provided in four different spatial resolutions: 0.2x0.2 (900x1800 grid cells), 0.5x0.5 (360x720), 1x1 (180x360), 2x2.5 (91x144) and includes auxilliary variables (e.g. cloud and surface properties, propagated level 3 uncertainties, averaging kernels). The data are provided in monthly netCDF files for each spatial resolution.

The version number is 1.0. Data are available in NetCDF format. https://doi.org/10.5194/essd-17-4627-2025

Citable as:  Royal Netherlands Meteorological Institute; Glissenaar, I.; Anglou, I.; Boersma, K.F.; Eskes, H. (2026): ESA Precursors for Aerosols and Ozone Climate Climate Change Initiative (Precursors_cci): TROPOMI monthly mean level 3 tropospheric nitrogen dioxide (NO2) version 1.0. NERC EDS Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/a2ac22ae97a34b51a81c8f53d414ec6b
Cite this dataset

Abbreviation: Not defined
Keywords: TROPOMI, L3, NO2

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s):
https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_precursors_for_aerosols_and_ozone_terms_and_conditions.pdf
When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

The L3 data were generated by spatiotemporally averaging operational TROPOMI L2 NO2 v2.3.1 data as part of the ESA CCI precursors project. Data was provided to CEDA for archival.
Data Quality:
The L3 were validated against independent groud-based NO2 measurements (Glissenaar et al., 2025).
File Format:
netcdf

Related Documents

 TROPOMI Level 3 tropospheric NO2 dataset with advanced uncertainty analysis from the ESA CCI+ ECV precursor project Glissenaar, I., Boersma, K. F., Anglou, I., Rijsdijk, P., Verhoelst, T., Compernolle, S., Pinardi, G., Lambert, J.-C., Van Roozendael, M., and Eskes, H.: TROPOMI Level 3 tropospheric NO2 dataset with advanced uncertainty analysis from the ESA CCI+ ECV precursor project, Earth Syst. Sci. Data 17, 4627-4650, 2025. doi: 10.5194/essd-17-4627-2025
 ESA CCI+ NO2 TROPOMI level-3 dataset citation. Glissenaar, I. A., Anglou, I., Boersma, K. F., & Eskes, H. (2024). ESA CCI+ TROPOMI L3 monthly mean NO2 columns [Data set]. Royal Netherlands Meteorological Institute (KNMI).doi: 10.21944/cci-no2-tropomi-l3
 ESA CCI Precursors_cci Product User Guide (PUG)
 ESA Climate Change Initiative Project Website
 ESA CCI Precursors for aerosols and ozone project website

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Instrument/Platform pairings

TROPOspheric Monitoring Instrument (TROPOMI) Deployed on: Sentinel 5 Precursor

Computation Element: 1

Title Computation for the ESA Precursors for Aerosols and Ozone Climate Change Initiative TROPOMI monthly mean level 3 tropospheric nitrogen dioxide (NO2) version 1.0 May 2018- December 2021
Abstract TROPOspheric Monitoring Instrument (TROPOMI) global tropospheric nitrogen dioxide (NO2) spatiotemporally averaged per month over a standard grid from May 2018 to December 2021. The dataset is provided in four different spatial resolutions: 0.2x0.2 (900x1800 grid cells), 0.5x0.5 (360x720), 1x1 (180x360), 2x2.5 (91x144) and includes auxilliary variables (e.g. cloud and surface properties, propagated level 3 uncertainties, averaging kernels). The data are provided in monthly netCDF files for each spatial resolution. L3 data were generated by spatiotemporally averaging operational TROPOMI L2 NO2 v2.3.1 data as part of the ESA CCI precursors project.
Input Description None
Output Description None
Software Reference None
Output Description

None
  • units: molec/cm^2
  • var_id: NO2_slant_column_number_density
  • long_name: NO2 SCD
  • units: molec/cm^2
  • var_id: NO2_slant_column_number_density_uncertainty
  • long_name: NO2 SCDE
  • units: molec/cm^2
  • var_id: tropospheric_NO2_column_number_density_total_uncertainty
  • long_name: NO2 VCD total uncertainty
  • units: molec/cm^2
  • var_id: tropospheric_NO2_column_number_density_total_uncertainty_kernel
  • long_name: NO2 VCD total uncertainty kernel
  • units: 1
  • var_id: NO2_averaging_kernel
  • long_name: NO2 averaging kernel
  • units: molec/cm^2
  • var_id: stratospheric_NO2_column_number_density
  • long_name: NO2 stratospheric VCD
  • units: 1
  • var_id: total_NO2_column_number_density_amf
  • long_name: NO2 total AMF (440nm)
  • var_id: NO2_slant_column_number_density_troposphere
  • long_name: NO2 trop SCD
  • units: molec/cm^2
  • units: 1
  • var_id: tropospheric_NO2_column_number_density_amf
  • long_name: NO2 tropospheric AMF (440nm)
  • standard_name: troposphere_mole_content_of_nitrogen_dioxide
  • units: molec/cm^2
  • var_id: tropospheric_NO2_column_number_density
  • long_name: NO2 tropospheric vertical column number density
  • units: 1
  • var_id: tropospheric_NO2_column_number_density_count
  • long_name: NO2 tropospheric vertical column number density count
  • units: 1
  • var_id: tropopause_layer_index
  • long_name: TM5 tropopause layer index
  • units: 1
  • var_id: cloud_fraction
  • long_name: cloud fraction
  • units: hPa
  • var_id: cloud_pressure
  • long_name: cloud_pressure
  • units: 1
  • var_id: qa_L3
  • long_name: data quality assurance value
  • units: days
  • var_id: eff_date
  • long_name: effective date
  • units: 1
  • var_id: eff_frac_day
  • long_name: effective fractional day
  • units: degree_north
  • var_id: latitude_bounds
  • long_name: grid latitude bounds
  • units: degree_east
  • var_id: longitude_bounds
  • long_name: grid longitude bounds
  • units: 1
  • long_name: land sea mask
  • var_id: land_water_mask
  • units: 1
  • var_id: no_observations
  • long_name: number of superobservations
  • units: 1
  • var_id: surface_albedo
  • long_name: surface LER (440nm)
  • units: hPa
  • long_name: surface pressure
  • var_id: surface_pressure
  • units: molec/cm^2
  • var_id: tropospheric_NO2_column_number_density_temporal_std
  • long_name: temporal standard deviation
  • units: hPa
  • var_id: tm5_sigma_a
  • long_name: tm5 sigma-values a
  • units: 1
  • var_id: tm5_sigma_b
  • long_name: tm5 sigma-values b
  • units: 1
  • var_id: vertical
  • long_name: vertical dimension index

Co-ordinate Variables

  • units: degree_north
  • standard_name: latitude
  • var_id: latitude
  • units: degree_east
  • standard_name: longitude
  • var_id: longitude
  • standard_name: time
  • var_id: time
  • units: days
Coverage
Temporal Range
Start time:
2018-05-01T00:00:00
End time:
2021-12-31T00:00:00
Geographic Extent

 
90.0000°
  
-180.0000°
  
180.0000°
 
-90.0000°
  
Related parties
Authors (5)
Publishers (1)