Aerosol Formation and Convective Clouds (AFaCC)


Project leader


Funding source

Swedish Research Council - Vetenskapsrådet (VR)


Project Details

Start date: 01/01/2011
End date: 31/12/2013
Funding: 2700000 SEK


Description

The aim of the proposed project is to study new particle formation associated with convective clouds with special focus on tropical environment. Convective clouds are known to be an important source of aerosol particles, but understanding of this process is virtually missing compared to new particle formation events in boundary layer. Thus, we are not able to assess how important the new particle formation triggered by convective clouds is for aerosol life cycle and earth climate. Furthermore, a detailed process understanding of this formation mechanism is equally important to assess the potential role of possible feedbacks present in the complex biosphere-atmosphere-hydrosphere system. The overall goal of the project is to provide a mechanistic description that quantitatively and qualitatively can explain possible impact of the convective cloud new particle formation mechanism on local to global scales. We will use existing observations of new particle formation and aerosol properties from tropics and mid-latitudes togethher with a Lagrangian process model and a high resolution Cloud Resolving Model. The combination of models allow us to simulate aerosol-cloud interactions in a manner never achieved before. Together with group from University of Helsinki we will focus on nucleation process itself in specific environment of convective clouds. We will attempt to derive process parameterisations, which can be used in regional and global aerosol and climate models.

Last updated on 2017-31-03 at 12:58