ORACLES Coordinated Missions

The UK CLARIFY (CLouds and Aerosol Radiative Impacts and Forcing: Year 2017) campaign brought the BAe-146 plane to Ascension Island during the same time as ORACLES-2017. CLARIFY's goal is to improve the representation and reduce uncertainty in UK Meteorological Office model estimates of the direct, semi-direct and indirect radiative effects, focusing on features more local to Ascension Island. The ORACLES-2017 deployment included an explicitly coordinated flight with the BAe-146.

The DOE LASIC (Layed Atlantic Smoke Interactions with Clouds; campaign deploys the ARM Mobile Facility 1 (AMF1) to Ascension Island (8S, 14.5W) from June 1, 2016 - October 31, 2017. Ascension Island is located 3500 km offshore in the trade-wind cumulus regime, over near-equatorial warm waters. Its deepening boundary layer, combined with the subsiding aerosol layer aloft, increases the chances that smoke will be entrained into the cloud layer.  LASIC includes a large suite of both aerosol in-situ and remote sensors and cloud remote sensors. Multiple radiosondes per day provide the first characterization of the diurnal cycle with and without smoke present overhead.

More on LASIC

The French AEROCLO-sA (AErosol RadiatiOn and CLouds in southern Africa) project, was based in Henties Bay, Namibia during August-September 2017, with the Falcon 20 aircraft operating out of Walvis Bay. The Henties Bay site has been taking detailed aerosol column and in-situ measurements since 2012. The AEROCLO-Sa measurements provide information on conditions to the south of the ORACLES-2017 deployment. 


Enhanced in-situ observations of fog over the Namib Desert were also made by German and southern African researchers concurrently with ORACLES.
You can learn more about all of the campaigns through a Special Issue of the ACP and AMT Copernicus journals (and make ’Special Issue’ a link to  .