Freja Chabert Østerstrøm

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My work seeks to discover the unknowns in atmospheric chemistry by investigating reactions, species, and mechanisms of atmospheric chemistry that has an impact on human health, the climate, and the environment, with an interest in both outdoor and indoor air. My research combines experimental and theoretical approaches, aiming to compare experimental results to the output from models and then update the theory based on the experimental findings.

I am currently a Marie Skłodowska-Curie global postdoc fellow at Harvard University & University of Copenhagen, where I am investigating influences on stratospheric ozone (e.g., volcanic eruptions) by using both theoretical and experimental techniques in the form of laboratory halogen kinetics/spectroscopy, 3D chemistry-climate and chemical-transport modelling & quantum chemical calculations.

My postdoc position is funded through the H2020 Marie Skłodowska-Curie Global Fellowship grant number 891186.

Selected publications

1. Published

   Impact of the Hunga Tonga volcanic eruption on stratospheric composition

   Wilmouth, D. M., Østerstrøm, Freja From, Smith, J. B., Anderson, J. G. & Salawitch, R. J., 14 Nov 2023, In: Proceedings of the National Academy of Sciences of the United States of America. 120, 46, 10 p., e2301994120.

   Research output: Contribution to journal › Journal article › Research › peer-review

2. Published

   Sensitivity of stratospheric ozone to the latitude, season, and halogen content of a contemporary explosive volcanic eruption

   Østerstrøm, Freja From, Klobas, J. E., Kennedy, R. P., Cadoux, A. & Wilmouth, D. M., 20 Apr 2023, In: Scientific Reports. 13, 1, 16 p., 6457.

   Research output: Contribution to journal › Journal article › Research › peer-review

3. Kinetics of the cross-reaction of CH₃O₂ + HO₂ radicals measured in the Highly Instrumented Reactor for Atmospheric Chemistry

   Østerstrøm, Freja From, Onel, L., Brennan, A., Parr, J. M., Whalley, L. K., Seakins, P. W. & Heard, D. E., 2023, In: International Journal of Chemical Kinetics. p. 489-500 12 p.

   Research output: Contribution to journal › Journal article › Research › peer-review

4. Spatial and temporal scales of variability for indoor air constituents

   Lakey, P. S. J., Won, Y., Shaw, D., Østerstrøm, Freja From, Mattila, J., Reidy, E., Bottorff, B., Rosales, C., Wang, C., Ampollini, L., Zhou, S., Novoselac, A., Kahan, T. F., DeCarlo, P. F., Abbatt, J. P. D., Stevens, P. S., Farmer, D. K., Carslaw, N., Rim, D. & Shiraiwa, M., Dec 2021, In: Communications Chemistry. 4, 1, 110.

   Research output: Contribution to journal › Journal article › Research › peer-review

5. Published

   Mechanistic study of the reaction of CH2F2 with Cl atoms in the absence and presence of CH4 or C2H6: decomposition of CHF2OH and fate of the CHF2O radical

   Østerstrøm, Freja From, Andersen, C. & da Silva, G., 14 May 2019, In: Physical Chemistry Chemical Physics. 21, 18, p. 9376-9383

   Research output: Contribution to journal › Journal article › Research › peer-review

6. Published

   Atmospheric chemistry of Z- and E-CF₃CH=CHCF₃

   Østerstrøm, Freja From, Andersen, S. T., Sølling, Theis Ivan, Nielsen, Ole John & Andersen, Mads Peter Sulbæk, 2017, In: Physical Chemistry Chemical Physics. 19, 1, p. 735-750 16 p.

   Research output: Contribution to journal › Journal article › Research › peer-review

7. Published

   Atmospheric chemistry of (CF₃)₂CHOCH₃, (CF₃)₂CHOCHO, and CF₃C(O)OCH₃

   Østerstrøm, Freja From, Wallington, T. J., Andersen, Mads Peter Sulbæk & Nielsen, Ole John, 2015, In: Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory. 119, 42, p. 10540-10552 13 p.

   Research output: Contribution to journal › Journal article › Research › peer-review