Luisa Ickes

PhD student in the modeling group of Prof. Ulrike Lohmann.

Research interests

• Cloud microphysics
• Nucleation processes
• Aerosol cloud interactions
• Direct and indirect effects of aerosols, especially mineral dust
• Global modelling

PhD topic

My PhD project aims of investigating the aerosol-cloud interactions in mixed-phase clouds with the global climate model ECHAM HAM. The focus will be on the influence of aerosols on the formation of mixed-phase clouds (freezing processes). For that purpose a new parameterization of freezing processes in mixed-phase clouds will be implemented into ECHAM HAM. The new parameterization is based on the Classical Nucleation Theory and makes it possible to incorporate different lab measurements. To test and verify the parameterization scheme some case studies focusing on the Arctic will be investigated.
Later on the impact of aerosol-cloud interactions on current and future climate will be further analysed.

Poster and oral presentations

• Ickes, Luisa; Lohmann, Ulrike; Hoose, Corinna (2012): Modeling Arctic mixed-phase clouds with ECHAM HAM. Warsaw, Poland, International Cloud Modelling Workshop (Poster).
• Ickes, Luisa; Ehrhart, Sebastian; Kuerten, Andreas; Curtius, Joachim; Kazil, Jan; CLOUD collaboration (2010): Modification of the PARNUC aerosol nucleation model for application to CLOUD aerosol chamber measurements. Helsinki, Finnland, IAC (Oral presentation).

Publications

• M. Schulz, J.M. Prospero, A.R. Baker, F. Dentener, L. Ickes, P.S. Liss, N.M. Mahowald, S. Nickovic, C. Pérez García-Pando, S. Rodríguez, M. Sarin, I. Tegen and R.A. Duce (2012): Atmospheric Transport and Deposition of Mineral Dust to the Ocean: Implications for Research Needs. Environ. Sci. Technol.; 16(19); pp. 10390–10404.
• J. Kirkby, et al. (2011): Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation. Nature; 476; pp. 429-433.
• A. Kupc , A. Amorim, J. Curtius, A. Danielczok, J. Duplissy, S. Ehrhart, H. Walther, L. Ickes, J. Kirkby, A. Kürten, J.M. Lima, S. Mathot, P. Minginette, A. Onnela, L. Rondo and P.E. Wagner (2011): A fibre-optic UV system for H2SO4 production in aerosol chambers causing minimal thermal effects. Journal of Aerosol Science; 42(8); pp. 532-543.