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OMNO2d provides daily global maps of nitrogen dioxide (NO2) concentrations at a 0.25x0.25 degree spatial resolution. The Level-3 gridded product contains total column and tropospheric column NO2 data, specifically for sky conditions with cloud fractions below 30 percent. This satellite-derived data is an indicator of air pollution from combustion and lightning, relevant for atmospheric chemistry and air quality monitoring.
Data is stored in HDF-EOS5 format; users may require specialized libraries to read it. The license requires review as it is specified as 'other-license-specified'.