
ACTRIS: Aerosols, Clouds, and Trace gases Research InfraStructure Network

EARLINET: European Aerosol Research Lidar Network

EUSAAR: European Supersites for Atmospheric Aerosol Research

CLOUDNET: Continuous Evaluation of Cloud Profiles in Seven Operational Models Using Ground-Based Observations

AERONET: AErosol RObotic NETwork

WMO World Meteorological Organisation
- AERONET-Europe
- WMO SDS-WAS Northern Africa-Middle East-Europe (NA-ME-E) Regional Center
- BDFC: Barcelona Dust Forecast Center