Cirisan, Ana

PhD student in The Atmospheric Chemistry Group (led by: Prof. Thomas Peter) and The Atmospheric Physics Group (led by: Prof. Ulrike Lohmann)

PhD project: Lagrangian Measurements and Modeling of Cirrus clouds (LAMMOC) funded by the Swiss State Secretariat for Education and Research (SER) within the framework of the European COST action Water Vapour in the Climate System (WaVaCS)

Keywords: cirrus clouds, ice supersaturation, box model, ice microphysics, geoengineering

Research

• Invastigation of the life cycle of cirrus clouds and the occurrence and evolution of ice supersaturation inside and around mid-latitude cirrus.
• Microphysical and micrometeorological studies on the time evolution of cirus clouds using a bulk microphysics scheme
  implemented into a box model (Spichtinger and Gierens, 2009; Spichtinger and Cziczo, 2009) with differently sophisticated ice microphysics runs.
• Impact of geoengineering on cirrus clouds.

Project aims

• By use of the “Match” technique perform the first Lagrangian measurement of supersaturated regions inside and around cirrus clouds.
• By use of Lagrangian modelling investigate the life cycle of cirrus clouds.
• By use of cloud-resolving 2-D modelling investigate small-scale morphology of cirrus clouds and assess the representativeness of the Match measurements.
• Provide an overall assessment of in-cloud supersaturations and their persistence.

Conferences and Workshops

Oral presentations

• Cirisan A., 2005: Dependence of the success of simulation of strong local wind Kosava on horizontal and vertical resolution of weather prognostic model, Contributed papers of National TDK Conference, Eötvös Loránd University, Budapest, Hungary.
• Cirisan A. and Ruman A., 2007: An example of meteorological field forecast obtained by the single level nesting for use in ecological modelling, The 9th International Symposium in Interdisciplinary Regional Research “ISIRR 2007”, University of Novi Sad, Novi Sad, Serbia.
• Cirisan A., Lalic B., Rajkovic B., 2007: LAPS versus OSU LSM coupled into NWP Workstation Eta model. 7th EMS Annual Meeting/8th European Conference on Applications of Meteorology, 1-5 October 2007, San Lorenzo de El Escorial, Spain. Vol. 4, EMS2007-A-00234.
• Kapor, D.V., Cirisan A.M., Mihailovic, D.T., 2008: The Impact of Geometrical Effects on Calculated Value of Albedo on the Heterogeneous Environmental Interfaces, The International Congress on Environmental Modelling and Software - IEMSS 08, Barcelona, Spain.
• Cirisan A., 2009: Effect of geoengineering aerosols on cirrus, Volcano Workshop 8th-9th July 2009, ETH Zurich.

Poster presentations

• Cirisan A., 2009: Stratospheric-Climate Links with Emphasis on the Upper Troposphere and Lower Stratosphere (SCOUT-O3), 15-17 June, Schliersee, Germany.
• Cirisan A., 2009: Potential impact of geoengineering on cirrus clouds in the tropopause region, Atmospheric Water Vapour in the Climate System (WaVaCS), COST Action ES0604 Workshop, June 17-19, Schliersee, Germany.
• Cirisan A., 2009: Effect of geoengineering aerosols on cirrus, Cargese International School, COST Action ES604, Water Vapour in the Climate System (WAVACS), 14-26 September, Cargèse, France.

Publications

1. Lalic B., Mihailovic D.T., Radovanovic S., Balaz J., Cirisan A., 2007: Input data representativeness problem in plant disease forecasting models. Idojaras, 111(2-3), 199-208.
2. Cirisan, A. and Ruman, A., 2008: An example of meteorological field forecast obtained by the single level nesting for use in ecological modeling. In: Environmental and Social Issues in The Down Danubian Region: Multidisciplinary approaches, Eds. D.T. Mihailovic, M. Miloradov and G. Telegdi, Scientific World, Review Book.
3. Kapor, D.V, Cirisan A.M. and Mihailovic D.T., 2008: The impact of geometrical effects on calculated value of albedo on the heterogeneous environmental interfaces. Fourth Biennial Meeting: International Congress on Environmental Modelling and Software (iEMSs 2008), International Environmental Modelling and Software Society (Eds. Sànchez-Marrè M., Béjar J., Comas J., Rizzoli A.E. and Guariso G.) (Barcelona, Catalonia, Spain, July 7-10 2008). Proceedings, Vol. 1: 114-121.
4. Mihailovic, D.T., Lazic, J., Leśny, J., Olejnik, J., Lalic, B., Kapor, D.V., Cirisan A., 2009. A new design of the LAPS land surface scheme for use over and through heterogeneous and non-heterogeneous surfaces: Numerical simulations and tests. Theor. Appl. Climatol., DOI 10.1007/s00704-009-0184-z
5. Cirisan A.M., Mihailovic D.T. and Kapor, D.V, 2009: Implementation of new approach to albedo calculation over heterogeneous interfaces for different geometries. In: Advances in Environmental Modeling and Measurements, Eds. Mihailovic D.T. and Lalic B., Nova Science Publishers, Inc., New York. (In Press)
6. Kapor, D.V, Mihailovic D.T. and Cirisan A.M., 2009: Aggregation of canyon albedo in surface models. In: Advances in Environmental Modeling and Measurements, Eds. Mihailovic D.T. and Lalic B., Nova Science Publishers, Inc., New York. (In Press)