Datasets of Aerosol properties retrieved from AOD time series at selected GAWPFR stations

The datasets of aerosol properties retrieved from  Aerosol Optical Depth (AOD) measurements from Precision Filter Radiometers (PFR) using the model Generalized Retrieval of Atmosphere and Surface Properties-Aerosol Optical Depth (GRASP-AOD). They correspond to 3 stations of the GAW-PFR network (Davos, Izana and Hohenpeissenberg) and one associated (Lindenberg).

Each file corresponds to a station (identifier DAV for Davos, HPB for Hohenpeissenberg and IZO for Izaña). The file names include the identifier for each station, the starting and ending year of the measurements. The first 4 lines of the file include information about the station and the 5th about the columns of the file. The following columns are included in every text file: date(1-3), time UTC (4-6), air mass (7), PFR AOD at 368, 412, 500 and 862 nm (8-11), retrieved PFR AOD from GRASP at 368, 412, 500 and 862 nm (12-15), Angström Exponent (16), Fine mode aerosol optical depth (17), Coarse mode aerosol optical depth (18), Total volume concentration (19), Fine mode volume concentration (20), Coarse mode volume concentration (21), Effective radius (22), Fine mode volume median radius (23), Coarse mode volume median radius (24), Fine mode geometric standard deviation (25), Coarse mode geometric standard deviation (26), Inversion absolute error (27), Inversion relative error (28).

The dataset includes the full time series days per station. At stations there was a CIMEL sun photometer from AERONET measuring in parallel, which we used for the validation of the aerosol properties.

We also include a report describing the work in more detail, including the validation process and results.