Staff, Air Quality

(from left to right in the above picture)
Valentin Foltescu
Cecilia Bennet
Lennart Robertson
Robert Bergström
Magnuz Engardt
Gunnar Omstedt


Cecilia Bennet

Researcher, Civil Engineer in Environmental Physics, Modelling of atmospheric chemistry, tracer transport and deposition in particular Asian aerosols.


Robert Bergström

I am a computational chemist and researcher in atmospheric chemistry and transport modelling.

My work at SMHI started in 1997 and includes development and application of atmospheric transport and chemistry models. I am mainly working with:

  • Modelling and forecasting of photochemical oxidants, including ground level ozone, in Europe
  • Investigations of environmental impact of air traffic emissions
  • Transport, chemistry and deposition of sulfur and nitrogen compounds
  • Aerosol transport and deposition
  • Quantum chemical studies of transition metal compounds, with emphasis on surface chemistry and density functional methods (at the department of Quantum Chemistry, Uppsala University)

Magnuz Engardt

Magnuz is a meteorologist working at the Air Quality research group at SMHI. He has a long experience in dispersion modelling and data acquisition and analysis. His dissertation dealt with measurements and analysis of various trace constituents in the Arctic atmosphere. The work focussed specifically on the interpretation of CO2 data in an atmospheric dispersion model. After completing the Ph.D. studies Magnuz spent a post doc. year at CSIRO in Melbourne, Australia and turned towards modelling of sulphur and nitrogen species. At SMHI Magnuz has been involved in various projects on updating the operational dispersion model in use at the institute. He has particularly been interested in turbulent and convective mixing and developing new sulphur conversion and deposition schemes. Magnuz has also participated in a number of research projects dealing with acid deposition in Sweden and in tropical regions.


Valentin Foltescu

Valentin has been active in research (and teaching of environmental science) since 1991. He is currently involved in work concerning modelling and data analysis of air pollution dispersion, with a special emphasis towards aerosols. Previously, he was also engaged in modelling of other atmospheric related processes, such as biomass growth, and in mesoscale meteorological/climatological analysis.

Valentin's Ph.D.-thesis (at Göteborg University, 1995) and postdoctoral work (at Environment Institute, Joint Research Centre of the European Commission , Ispra,) has dealt with both theoretical and experimental research. The theoretical part of his work was concerned with stratospheric-tropospheric exchange of particles and ozone and global modelling of mineral aerosols. The experimental research, in the framework of the BMCAPE (Background Marine Contribution to Atmospheric Pollution in Europe) and EASOE (European Arctic Stratospheric Ozone Experiment) projects concentrated on terrestrial and in-situ flight experiments, involving systems and methods for measurement and analysis of physical, chemical and meteorological variables and their interplay in the atmosphere.


Gunnar Omstedt

Gunnar is now working as research meteorologist at the Air Quality group at SMHI. His university studies were undertaken at Stockholm University with a B.S. in Physics, Chemistry and Meteorology in 1976. Gunnar has been working in the air pollution field since starting with global and regional scale problems. At present the work is more emission source oriented, with the focus on local scale problems. Gunnar has long experience in air pollution research and development, with emphasis on atmospheric boundary layer processes, air pollution models and atmospheric chemistry.


Lennart Robertson

Lennart is involved in research the field of atmospheric dispersion modelling and data assimilation of both meteorological and chemical variables. This includes development and practical applications of dispersion models on local to global scales. At the time the main tasks is system development of the MATCH model. Lennart has been involved in some EU research activities like, RODOS, ETEX and RTMOD which involves the use and development of the MATCH model for real-time applications.

Lennart has knowledge in the area of data-assimilation that goes back to some early work on objective analysis (OI) applied to both meteorological variables as atmospheric tracers. Over the years some work has been done on variational data-assimilation where the MATCH model is an integrated part in the analysis of chemical substances.

Updated 19-Dec-2006