摘要：As part of the Dynamics-Aerosol-Chemistry-Cloud Interactions in West Africa (DACCIWA) project, extensive in-situ measurements of the southernWest African atmospheric boundary layer (ABL) have been performed at three supersites Kumasi (Ghana), Savè (Benin) and Ile-Ife (Nigeria) during the 2016 monsoon period (June and July) . The measurements were designed to provide data for advancing our understanding of the relevant processes governing the formation, persistence and dissolution of nocturnal low-level stratus clouds and their infuence on the daytime ABL in southern West Africa . An extensive low-level cloud deck often forms during the night and persists long into the following day strongly infuencing the ABL diurnal cycle . Although the clouds are of a high signifcance for the regional climate, the dearth of observations in this region has hindered process understanding . Here, an overview of the measurements ranging from near-surface observations, cloud characteristics, aerosol and precipitation to the dynamics and thermodynamics in the ABL and above, and data processing is given . So-far achieved scientifc fndings, based on the dataset analyses, are briefy overviewed .
