资源环境科技发展态势分析平台

The southeast Atlantic has expansive aerosol plume overlying clouds for a third of each year. Aerosol loadings were measured from the airborne sunphotometer and lidar during the 2016 NASA ObseRvations of Aerosols above CLouds and their intEractionS (ORACLES) field campaign. We compare these measurements with one another and with collocated Moderate Resolution Imaging Spectroradiometer (MODIS) observations at native spatial resolutions using <15‐minute and three‐hour temporal collocation criteria. We find better statistical relationships for the <15‐minute temporal resolution, indicating that aerosol loadings in the southeast Atlantic commonly vary below the three‐hourly temporal scale over MODIS spatial resolutions. We also use measurements from the solar spectral flux radiometer (SSFR) to conduct the first comprehensive evaluation of attenuation‐corrected below‐aerosol cloud optical depth (COD) from MODIS and Spinning Enhanced Visible and Infrared Imager (SEVIRI). MODIS COD retrievals improve their agreement with SSFR when accounting for overlying aerosol attenuation whereas SEVIRI CODs are mostly underestimated.