Statistical Intercomparison of Aeolus B10 SCA and SCAmb Backscatter Coefficient with Ground-Based Measurements of ACTRIS/EARLINET Stations in South-Western Europe

Abstract

In this work, we perform an intercomparison of Aeolus reprocessed B10 (baseline 10) SCA (Standard Correct Algorithm) and SCAmb (Standard Correct Algorithm middle bin) co-polar backscatter coefficients (𝛽𝐴𝑒𝑜𝑙𝑢𝑠𝑝𝑎𝑟𝑡) with analogous ground-based measurements from the ACTRIS/EARLINET stations of Granada (Spain, 24 matching overpasses), Évora (Portugal, 15 overpasses) and Barcelona (Spain, 16 overpasses). Ground-based total particle backscatter coefficient is converted into Aeolus-like profiles (𝛽𝐴𝑒𝑜𝑙𝑢𝑠 𝑙𝑖𝑘𝑒,355𝑝𝑎𝑟𝑡) through the linear particle depolarization ratio at 355 nm (𝛿𝑙𝑖𝑛𝑒𝑎𝑟,355𝑝𝑎𝑟𝑡) and a thorough bibliographic review of dual-polarization measurements for relevant aerosol types. A relation for the spectral conversion of 𝛿𝑙𝑖𝑛𝑒𝑎𝑟𝑝𝑎𝑟𝑡 is proposed.