NO2 observation for:
Data version overview
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Tropospheric NO2 on 06 January 2023
Note on the contents of the offline data file
The offline data files offered here for download are a .tar archive of the
orbit files of the current day. These orbit files are a volume-reduced
version (by about 50%) of the official TROPOMI/S5P NO2 L2 orbit product and
to make this clear the string "_reduced" is added to the orbit file names.
This reduction is performed on the version v2.4.0 and following data.
Removed are the O2-O2 and FRESCO cloud data groups (cloud data which is used
in the processing is in INPUT_DATA), most diagnostic fields from the DOAS
spectral fit, and some other rarely used fields. All global attributes and
part but not all of the metadata are retrained.
The qa_value of the v2.4.0 OFFL files between 25 July 2022 and 12 March 2023
has been updated to correct for an unfortunate bug; see
here for details.
This update is marked by an additional global attribute and two attributes
qa_value variable, as well as an extra data variable
qa_value_updated_flag that shows which groundpixels received an
The full original orbit files are available via, e.g., ESA's
Sentinal-5P Data Hub.