The High Arctic Aerosol and its affect on Clouds (ASCOS)

Project leader

Funding source

Swedish Research Council - Vetenskapsrådet (VR)

Project Details

Start date: 01/01/2006
End date: 31/12/2009
Funding: 2688000 SEK


ASCOS (Arctic Summer Cloud Ocean Study) is a multi-month Arctic field experiment to be launched in the summer of 2007 as a part of IPY. The role of ASCOS will be to provide high quality and unique data for an understanding of the controlling factors of the evolution of low-level clouds in over the pack ice area. Such data are essential for the development of correct parameterizations available for numerical models projecting future climate. This was pointed out in the recent Arctic Climate Impacts Assessment (ACIA). ASCOS proposes an integrated study from the sea-ice interface to the cloud-topped boundary layer. This requires a strong interdisciplinary approach that has to include ocean/ice biogeochemistry, gas phase chemistry, aerosol and cloud chemistry/physics, and meteorology, accompanied by a full description of the surface radiation budget over the pack-ice. The value of an interdisciplinary approach has been well demonstrated by the history of such research over the Arctic pack ice in summer. This application seeks the necessary financial support to specify: (1) most of the sources of aerosols with emphasis on the open lead surface microlayer, (2) their chemical properties, morphology and state of mixture and, (3) to outline the processes involved in them becoming capable of forming cloud drops.

External Partners

Last updated on 2017-31-03 at 12:57