NOAA Earth System Research Laboratory Surface Ozone Data, Version 2 from 1973-09-13 to 2024-12-31 (NCEI Accession 0312023)

This data set contains continuous UV photometric data of surface level ozone collected at 6m above ground level. Data records consist of UTC time, date, and processed ozone mixing ratio (parts per billion by volume). Data is collected from global locations and is provided in 1 hour averages. The data were produced and are available from the NOAA Earth System Research Laboratory (ESRL) Global Monitoring Laboratory, and the data are archived by the NOAA National Centers for Environmental Information (NCEI). Version 2 is a re-processing of the version 1 dataset with corrections for calibration and quality assurance errors. The re-processing was done based on historical calibration and quality control documentation.