Ozone Recovery from Merged Observational Data and Model Analysis (OREGANO)

Proxy datasets used for ozone trend regression

Solar

• Dataset: Extended Bremen Mg II index (1947-today)
• Link: www.iup.uni-bremen.de/UVSAT/data/
• Download: MgII_extended.dat
• Monthly mean file: mgii_index_monthly_mean_1979-2023.txt
• alternative: F10.7 cm radio flux (1947-present, f107_all.txt)

QBO

• Dataset: PC1 and PC2 of ERA5 zonal mean wind 6°S-6°N (1979-2023)
• Link: https://climate.copernicus.eu/climate-reanalysis
• Monthly mean file: qbo_era5_PC_1979-2023.txt
• alternative: 50hPa and 10hPa of ERA5 zonal mean wind (1979-2023, qbo_era5_6S-6N_zonalwind_monthly_mean_1979-2023.txt)

Aerosol

• Dataset: ESA CREST SAOD V2 (1979-2022)
• Link: https://fmi.b2share.csc.fi/records/8bfa485de30840eba42d1d407f4ce19c
• Download: ESA-CREST-v2.0-fv001.nc
• alternative: GLOSSAC V2.21 (1979-2022 https://asdc.larc.nasa.gov/project/GloSSAC)
• Note: Predictors (GLOSSAC or CREST) shall be calculated for the zonal bands considered.

ENSO

• Dataset: Multivariate ENSO Index Version 2 (1979-2023)
• Link: https://psl.noaa.gov/enso/mei/
• Monthly mean file: enso_mei_index_v2_monthly_mean_1979-2023.txt
• alternative: ENSO 3.4 Index (https://psl.noaa.gov/data/correlation/nina34.anom.data)
• Note: MEI index provides the avarage of current and past month. Needs to be checked if an additional lag has to be introduced to MEI.

Arctic Oscillation (AO)

• Dataset: Arctic Oscillation (1979-2023)
• Link: https://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/teleconnections.shtml
• monthly mean file: ao_index_monthly_mean_1979-2023.txt
• Note: AO has acumulative effect which means that dependent on the month of the season different scaling applies. The proper use has still to be detailed.

Antarctic Oscillation (AAO)

• Dataset: Antarctic Oscillation (1979-2023)
• Link: https://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/teleconnections.shtml
• monthly mean file: aao_index_monthly_mean_1979-2023.txt
• Note: AAO has an acumulative effect which means that dependent on the month of the season different scaling applies. The proper use has still to be detailed.

Brewer-Dobson circulation (BDC)

• Dataset: ERA5 accumulated eddy heat flux (100 hPa, 45°-75°, 1979-2023)
• Link: https://climate.copernicus.eu/climate-reanalysis
• monthly mean file: ehf_era5_100hPa_monthly_mean_1979-2023.txt
• Note: ehf has an acumulative effect which means that dependent on the month of the season different scaling applies. The proper use has still to be detailed.