The AERONET (AErosol RObotic NETwork) program was a federation of ground-based remote sensing aerosol networks established by NASA and LOA-PHOTONS (CNRS) and was greatly expanded by collaborators from national agencies, institutes, universities, individual scientists, and partners. The program provides a long-term, continuous and readily accessible public domain database of aerosol optical, mircrophysical and radiative properties for aerosol research and characterization, validation of satellite retrievals, and synergism with other databases. The network imposes standardization of instruments, calibration, processing and distribution.

AERONET collaboration provides globally distributed observations of spectral aerosol optical Depth (AOD), inversion products, and precipitable water in diverse aerosol regimes. Aerosol optical depth data are computed for three data quality levels: Level 1.0 (unscreened), Level 1.5 (cloud-screened), and Level 2.0 (cloud screened and quality-assured). Inversions, precipitable water, and other AOD-dependent products are derived from these levels and may implement additional quality checks. See more here.

AERONET project team page, NASA/GSFC

ARG IAP team page1 in AERONET project

ARG IAP team page2 in AERONET project

See more info on the page of the Atmospheric Research Group