ACTRIS/EARLINET Level 3 2000-2021 climatological dataset

This dataset provides climatological aggregation of aerosol remote sensing data over 22 years (2000-2021) and 33 stations, being of interest potentially to many different users investigating local and national aerosol content and related modification over time, but also international stakeholders. Level 3 climatological datasets are obtained as aggregated products from the ACTRIS/EARLINET fully quality controlled (QC) aerosol optical products (i.e. Level 2 products). In particular, this release considers only data fully compliant to the QC procedure v4.0 [https://earlinet.eu/wp-content/uploads/2025/03/EARLINET_QC_v4_0_20250225.pdf]. In order to avoid biases due to measurements made on purpose specifically for capturing special events, it is considered only subset of data corresponding to regular schedule and measurements done for satellite validation purposes (i.e. climatological, CALIPSO and ADM-Aeolus category files following the current EARLINET database organization [Pappalardo et al., 2014]). Data are organized for stations in order to allow future updates of the climatological products even at station level. For each station, two types of data are released: profile values and integrated quantities. For each type of data, four different temporal aggregations are provided: seasonal, annual, normal seasonal, normal monthly. All the activities are performed in the general framework of ACTRIS RI.Full DataCite metadata:https://commons.datacite.org/doi.org/10.57837/actris-ares/5snr-xv73