ESA CCI+ NO2 TROPOMI level-3 data

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Data set: NO2 > TROPOMI | OMI
 
The dataset presented here is the TROPOMI monthly level-3 record for nitrogen dioxide at several spatial resolutions, including a realistic uncertainty estimate. The dataset is available in monthly mean netCDF files from May 2018 until December 2021.

For more information and access to the data contact Isidora Anglou (isidora.anglou [at] knmi.nl).

Publication:
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
 
Data 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
TROPOMI tropospheric NO2 column Jan. 2019

This dataset is part of the ESA CCI+ Precursors for aerosols and ozone project, developing long-term climate data records of the GCOS Precursors for Aerosol and Ozone Essential Climate Variable. Precursors include the short-lived atmospheric trace gases: nitrogen dioxide (NO2), sulphur dioxide (SO2), carbon monoxide (CO), formaldehyde (HCHO), and ammonia (NH3). The project focuses on building consistent/harmonised long term multi-satellite mission climate data records from satellite instruments including GOME, SCIAMACHY, GOME-2, OMI, TROPOMI, IASI, and MOPITT.

The ESA CCI+ Precursors for aerosols and ozone project consortium is based on a collaboration between BIRA-IASB, KNMI, IUP-UB, DLR, LATMOS/SU, ULB, and LAERO.

Project webpage:
https://climate.esa.int/en/projects/precursors-for-aerosols-and-ozone/
 

Data download

Monthly mean files are available for the period May 2018 – Dec 2021
at four different spatial resolutions; data version is 1.26
(which replaced version 1.25 on 23 October 2025).
 

Resolution 0.2° x 0.2° (size of monthly files is about 405MB):

year individual month all months
 2018    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2019    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2020    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2021    01   02   03   04   05   06   07   08   09   10   11   12   zip file

Resolution 0.5° x 0.5° (size of monthly files is about 65MB):

year individual month all months
 2018    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2019    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2020    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2021    01   02   03   04   05   06   07   08   09   10   11   12   zip file

Resolution 1.0° x 1.0° (size of monthly files is about 17MB):

year individual month all months
 2018    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2019    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2020    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2021    01   02   03   04   05   06   07   08   09   10   11   12   zip file

Resolution 2.0° x 2.5° (size of monthly files is about 3.4MB):

year individual month all months
 2018    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2019    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2020    01   02   03   04   05   06   07   08   09   10   11   12   zip file
 2021    01   02   03   04   05   06   07   08   09   10   11   12   zip file

 

last modified: 27 October 2025