A global total column ozone climate data record

Abstract. Total column ozone (TCO) data from multiple satellite-based instruments have been combined to create a single near-global daily time series of fields at 1.25? longitude by 1? latitude spanning the period 31 October 1978 December 2016. Comparisons against TCO measurements ground-based Dobson and Brewer spectrophotometer networks are used remove offsets drifts between subset measurements. The corrected is then as basis for homogenizing remaining sets. construction this database improves on earlier versions maintained first National Institute Water Atmospheric Research (NIWA) now Bodeker Scientific (BS), referred NIWA-BS database. intention serve climate record TCO, end, requirements constructing records, detailed GCOS (the Global Climate Observing System), followed closely possible. This new version includes wider range instruments, uses updated sources satellite data, extends covered, improved statistical methods model difference when sets, and, perhaps most importantly, robustly tracks uncertainties source sets through final which accompanied associated uncertainty fields. Furthermore, gap-free (referred BS-filled database) has created documented in paper. utility demonstrated an analysis trends November Both databases freely available non-commercial purposes: DOI https://doi.org/10.5281/zenodo.1346424 (Bodeker et al., 2018) https://zenodo.org/record/1346424. https://doi.org/10.5281/zenodo.3908787 2020) https://zenodo.org/record/3908787. In addition, both http://www.bodekerscientific.com/data/total-column-ozone (last access: June 2021).