Tim Carlsen

Image of Tim Carlsen
Norwegian version of this page
Phone +47 22855817
Room 2404
Username
Visiting address Blindernveien 31 Kristine Bonnevies hus 0371 Oslo
Postal address Postboks 1022 Blindern 0315 Oslo

Academic interests

  • Mixed-phase clouds (MPC): climate impact, temporal and spatial variability of thermodynamic cloud phase, influence of ice nucleating particles (INPs) and efficiency of glaciation processes on MPC
  • Reflective properties of snow surfaces: surface albedo, bidirectional reflectance distribution function (BRDF), influence of optical-equivalent snow grain size, illumination geometry and surface roughness
  • Remote sensing: visible, near-infrared, terrestrial infrared, radar, lidar (ground-based, airborne, and satellite)
  • Significance of polar regions for Earth’s climate system (e.g. Arctic Amplification) 

Background

2021 – present:   Researcher, University of Oslo, Norway
2019 – 2021:       Postdoctoral Fellow, University of Oslo, Norway
2014 – 2018:       Doctoral Research Fellow (PhD), Leipzig University, Germany 

Tags: Meteorology

Publications

  • Pasquier, Julie T.; Henneberger, Jan; Korolev, Alexei; Ramelli, Fabiola; Wieder, Jörg & Lauber, Annika [Show all 12 contributors for this article] (2023). Understanding the History of Two Complex Ice Crystal Habits Deduced From a Holographic Imager. Geophysical Research Letters. ISSN 0094-8276. 50(1). doi: 10.1029/2022GL100247. Full text in Research Archive
  • Pasquier, Julie Thérèse; Henneberger, Jan; Ramelli, Fabiola; Lauber, Annika; David, Robert Oscar & Wieder, Jörg [Show all 10 contributors for this article] (2022). Conditions favorable for secondary ice production in Arctic mixed-phase clouds. Atmospheric Chemistry and Physics (ACP). ISSN 1680-7316. 22(23), p. 15579–15601. doi: 10.5194/acp-22-15579-2022. Full text in Research Archive
  • Pasquier, Julie T.; David, Robert Oscar; Freitas, Gabriel; Gierens, Rosa; Gramlich, Yvette & Haslett, Sophie [Show all 44 contributors for this article] (2022). The Ny-Ålesund Aerosol Cloud Experiment (NASCENT) Overview and First Results. Bulletin of The American Meteorological Society - (BAMS). ISSN 0003-0007. 103(11), p. E2533–E2558. doi: 10.1175/BAMS-D-21-0034.1. Full text in Research Archive
  • Schäfer, Britta; Carlsen, Tim; Hanssen, Ingrid; Gausa, Michael & Storelvmo, Trude (2022). Observations of cold-cloud properties in the Norwegian Arctic using ground-based and spaceborne lidar. Atmospheric Chemistry and Physics (ACP). ISSN 1680-7316. 22(14), p. 9537–9551. doi: 10.5194/acp-22-9537-2022. Full text in Research Archive
  • Carlsen, Tim & David, Robert Oscar (2022). Spaceborne Evidence That Ice-Nucleating Particles Influence High-Latitude Cloud Phase. Geophysical Research Letters. ISSN 0094-8276. 49(14). doi: 10.1029/2022GL098041. Full text in Research Archive
  • Becker, Sebastian; Ehrlich, André; Jäkel, Evelyn; Carlsen, Tim; Schäfer, Michael & Wendisch, Manfred (2022). Airborne measurements of directional reflectivity over the Arctic marginal sea ice zone. Atmospheric Measurement Techniques. ISSN 1867-1381. 15(9), p. 2939–2953. doi: 10.5194/amt-15-2939-2022. Full text in Research Archive
  • Engdahl, Bjørg Jenny Kokkvoll; Carlsen, Tim; Køltzow, Morten Andreas Ødegaard & Storelvmo, Trude (2022). The Ability of the ICE-T Microphysics Scheme in HARMONIE-AROME to Predict Aircraft Icing. Weather and forecasting. ISSN 0882-8156. 37(2), p. 205–217. doi: 10.1175/WAF-D-21-0104.1. Full text in Research Archive
  • Hofer, Stefan; Amory, Charles; Kittel, Christoph; Carlsen, Tim; Le Toumelin, Louis & Storelvmo, Trude (2021). The Contribution of Drifting Snow to Cloud Properties and the Atmospheric Radiative Budget Over Antarctica. Geophysical Research Letters. ISSN 0094-8276. 48(22). doi: 10.1029/2021GL094967. Full text in Research Archive
  • Jäkel, Evelyn; Carlsen, Tim; Ehrlich, André; Wendisch, Manfred; Schäfer, Michael & Rosenburg, Sophie [Show all 14 contributors for this article] (2021). Measurements and Modeling of Optical-Equivalent Snow Grain Sizes under Arctic Low-Sun Conditions. Remote Sensing. ISSN 2072-4292. 13(23). doi: 10.3390/rs13234904. Full text in Research Archive
  • Carlsen, Tim; Birnbaum, G.; Ehrlich, André; Helm, Veit; Jäkel, Evelyn & Schäfer, Michael [Show all 7 contributors for this article] (2020). Parameterizing anisotropic reflectance of snow surfaces from airborne digital camera observations in Antarctica. The Cryosphere. ISSN 1994-0416. 14(11), p. 3959–3978. doi: 10.5194/tc-14-3959-2020.
  • Bjordal, Jenny; Storelvmo, Trude; Alterskjær, Kari & Carlsen, Tim (2020). Equilibrium climate sensitivity above 5 °C plausible due to state-dependent cloud feedback. Nature Geoscience. ISSN 1752-0894. 13, p. 718–721. doi: 10.1038/s41561-020-00649-1. Full text in Research Archive
  • Carlsen, Tim; Birnbaum, Gerit; Ehrlich, André; Freitag, Johannes; Heygster, Georg & Istomina, Larysa [Show all 10 contributors for this article] (2017). Comparison of different methods to retrieve optical-equivalent snow grain size in central Antarctica. The Cryosphere. ISSN 1994-0416. 11(6), p. 2727–2741. doi: 10.5194/tc-11-2727-2017.
  • Werner, Martin; Langebroek, Petra; Carlsen, Tim; Herold, Marcus & Lohmann, Gerrit (2011). Stable water isotopes in the ECHAM5 general circulation model: Toward high-resolution isotope modeling on a global scale. Journal of Geophysical Research (JGR): Atmospheres. ISSN 2169-897X. 116(D15109). doi: 10.1029/2011JD015681.

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Published Mar. 8, 2019 4:09 PM - Last modified Mar. 19, 2023 2:41 PM