Aerosol and Cloud Chemistry  --  Projects

VIACI
(Virtual Institute - Aerosol-Cloud Interactions)

       

VI-ACI is a Helmholtz Virtual Institute coordinated by T. Leisner and O. Möhler (Forschungszentrum Karlsruhe GmbH - Institut für Meteorologie und Klimaforschung, Atmosphärische Aerosolforschung).

Objectives:
A major challenge in current atmospheric research is to determine the ability of aerosols to act as CCN and IN and to develop aerosol-related parameterisations for the representation of CCN and IN processes in cloud, weather forecast, and climate models. The Virtual Institute VI-ACI aims at detailed experimental and modelling investigations of aerosol cloud processes and novel evaluations of the role of clouds in the climate system.

VI-ACI Homepage

Partners

Campaigns:

1) FROST, LACIS, Ift Leipzig, April 2008

      Instrumentation:
      Aerodyne C-ToF-AMS, Grimm CPC

      People involved:
      P. Reitz, J. Schneider, J. Y. Schmale


2) ACI02, AIDA, FZ Karlsruhe, Oktober 2008

      Instrumentation:
      SPLAT, ALABAMA

      People involved:
      P. Reitz, M. Brands, T. Klimach, Fr. Freutel, J. Schneider, F. Drewnick

3) FROST-2, LACIS, IfT Leipzig, March/April 2009

      Instrumentation:
      Aerodyne C-ToF-AMS, TSI SMPS/CPC

      People involved:
      P. Reitz, J. Schneider, S. Keßel

      Fotos

4) ACI03, AIDA, FZ Karlsruhe, Oktober 2009

      Instrumentation:
      Aerodyne C-ToF-AMS, ALABAMA, TSI SMPS/CPC

      People involved:
      P. Reitz, M. Brands, A. Roth, J. Schneider



Results:

T. Klimach, A. Roth, M. Brands, F. Drewnick, J. Schneider, M. Kamphus, and S. Borrmann, Performance comparison of two different Laser Ablation Time-of-Flight Mass Spectrometers, EAC, Karlsruhe, 2009

P. Reitz, J. Schneider, H. Wex, F. Stratmann, D. Niedermeier, K. Mildenberger, D. Covert, Th. F. Mentel, C. Spindler, L. Poulain, and S. Borrmann, Detection of thin coatings on refractory particles with an aerosol mass spectrometer and application in laboratory studies of hygroscopic growth, CCN and IN activation, EAC Karlsruhe, 2009

P. Reitz, J. Schneider, H. Wex, F. Stratmann, D. Niedermeier, K. Mildenberger, D. Covert, Th. F. Mentel, C. Spindler, L. Poulain, and S. Borrmann, Thin Coatings On Refractory Particles: Detection With Mass Spectrometry And Implications For Studies Of Hygroscopic Growth, CCN And IN Activation, ICNAA, Prague, 2009.

D. Niedermeier, S. Hartmann, R. A. Shaw, D. Covert, Th. F. Mentel, J. Schneider, L. Poulain, P. Reitz, C. Spindler, T. Clauss, A. Kiselev, E. Hallbauer, H. Wex, K. Mildenberger, and F. Stratmann, Heterogeneous freezing of droplets with immersed mineral dust particles – measurements and parameterization,
Atmos. Chem. Phys. Discuss., 9, 15827-15865, 2009