Welgegund multiwavelength aerosol absorption data

Data from aethalometer AE-31 at Welgegund, South Africa in 2018.

Data is corrected according to Collaud Coen et al., Atmos. Meas. Tech., 2010, using Cref = 4.3 after comparison with MAAP at Welgegund.

Data is in prevailing conditions.
Inlet is R&P PM10 and aerosol has been dried with a nafion dryer to RH < 40 %.
Data filtered based on visual inspection of the data.

Time is in UTC+2 (time stamp is center of averaging period).
1 h average values are averaged (mean) from 2 minute data. Each 1 h average is based on at
least 40 minutes of measurements (66.7% data coverage required).

Missing or bad data: -999.

Columns

1 : year
2 : month
3 : day
4 : hour
5 : minute
6 : second
7 : absorption 370 nm [Mm^-1]
8 : absorption 470 nm [Mm^-1]
9 : absorption 520 nm [Mm^-1]
10 : absorption 590 nm [Mm^-1]
11 : absorption 660 nm [Mm^-1]
12 : absorption 880 nm [Mm^-1]
13 : absorption 950 nm [Mm^-1]