CALIOP Clear-Sky Constrained Aerosol Extinction Profiles ODCOD Version 1

These retrievals use column aerosol optical depth (AOD) from CALIOP Ocean-Derived Column Optical Depth (ODCOD), based on satellite measurements, to constrain the retrieval of extinction profiles during daytime and nighttime over oceans.

Traditional CALIOP aerosol extinction retrievals rely on lidar ratios, introducing significant systematic uncertainties (~30–50%) in extinction estimates. To mitigate these uncertainties, this dataset replaces lidar ratios with column-equivalent AOD from ODCOD, enabling improved retrievals of attenuation profiles globally over oceans. Validation against more than 150 coincident airborne High Spectral Resolution Lidar (HSRL) datasets demonstrates strong agreement, with mean bias differences within 0.01 km⁻¹ (10%).