Dr. Tobias Jonas

Selected publications from previous research

• Jonas, T., A. Stips, W. Eugster, and A. Wüest (2003). Observations of a quasi shear-free lacustrine convective boundary layer: Stratification and its implications on turbulence. J. Geophys. Res.-Oceans, 108 (C10): art. no. 3328 (abstract)

• Eugster, W., G. Kling, T. Jonas, J.P. McFadden, A. Wüest, S. MacIntyre, and F.S. Chapin III (2003). CO₂ exchange between air and water in an Arctic Alaskan and midlatitude Swiss lake: Importance of convective mixing. J. Geophys. Res.-Atmos., 108 (D12): art. no. 4362 (abstract)

• Jonas, T., A. Terzevik, D. Mironov, and A. Wüest (2003). Radiatively driven convection in an ice-covered lake investigated by using temperature microstructure technique. J. Geophys. Res.-Oceans, 108 (C6): art. no. 3183 (abstract)

• Mironov, D., A. Terzhevik, G. Kirilin, T. Jonas, J. Malm, and D. Farmer (2002). Radiatively driven convection in ice-covered lakes: Observations, scaling, and a mixed layer model. J. Geophys. Res.-Oceans, 107 (C4): art. no. 3032 (download)

• Lorke, A., L. Umlauf, T. Jonas, and A. Wüest (2002). Dynamics of turbulence in low-speed oscillating bottom-boundary layers of stratified basins. Environ. Fluid Dynamics, 291-313 (abstract)

• Sander, J., A. Simon, T. Jonas, and A. Wüest (2000). Surface turbulence in natural waters: A comparison of large eddy simulations with microstructure observations. J. Geophys. Res.-Oceans, 105 (C1): 1195-1207

• Jonas, T. (2001). Convective mixing processes in natural waters. Ph.D. thesis, Eidg. Tech. Hochschule, Zürich, Switzerland, No. 14339

• Jonas, T., 1996. Transiente Phänomene beim Tropfenaufprall auf temperierte Wände. Diplomathesis, Georg-August-Universität, Göttingen, Germany

Career

• 2006 until now: Head of Snow Hydrology Research Group at the WSL. The research group is based in Davos (SLF).

• 2002 – 2006: Scientific Staff of the WSL at the Swiss Federal Institute for Snow and Avalanche Research SLF in Davos. Research focus on Snow meteorology and snow ecology.

• 2001 – 2002: Scientific Staff of the Swiss Federal Institute of Aquatic Science and Technology (Eawag) in Dübendorf. Research focus on Aquatic Physics.

• 1997 – 2001: PhD student at the Swiss Federal Institute of Aquatic Science and Technology (Eawag) in Dübendorf. Title of thesis: "Convective mixing processes in natural water bodies".

• 1997: Research Fellow at Technical University of Freiberg. Research focus on technical fluid dynamics.

• 1995 – 1996: Research Assistant at Max-Planck-Institut of Fluid Mechanics in Göttingen. Research focus on technical fluid dynamics.

Education

• 2001: Ph.D., Department of Environmental Sciences, Swiss Federal Institute of Technology Zurich (ETHZ). Title of thesis: "Convective mixing processes in natural water bodies".

• 1996: Diploma in Physics, Fluid Dynamics Institute, Georg-August University Göttingen (GAU). Title of thesis: "Transient break-up mechanisms of drops impinging on heated walls (in german)".

• 1991: High school exam (German Abitur), Helene-Lange Gymnasium, Rendsburg.

Scientific Community

• President of the International Commission for Snow and Ice Hydrology (ICSIH / IAHS / IUGG)

• Member of the Swiss Hydrological Commission (CHy) of the Swiss Academy of Sciences (SCNAT)

• Member of several scientific societies such as International Glaciological Society (IGS) and American Geophysical Union (AGU)

• Serving as lead convener in scientific conferences

Current Dissertations

Johanna Malle (2017 - 2020)

• Preliminary title of PhD thesis: Improving the representation of forest albedo in land-surface models

• University: Northumbria University

• Supervisor at SLF: Dr. Tobias Jonas

• Supervisor in Northumbria: Dr. Nick Rutter

Giulia Mazzotti (2017 - 2020)

• Preliminary Title of PhD thesis: Improving the representation of forest snow processes in land surface models

• University: Swiss Federal Institute of Technology Zurich (ETHZ)

• Supervisor: Dr. Tobias Jonas

• Examiner: Prof. Dr. Martin Funk

Nena Griessinger (2015 - 2018)

• Preliminary Title of PhD thesis: Spatial and temporal variability of snowmelt

• University: Universität Zürich (UZH)

• Supervisor: Dr. Tobias Jonas

• Examiner: Prof. Dr. Jan Seibert

Sebastian Würzer (2013 - 2017)

• Title of PhD thesis: Snowpack runoff formation processes during rain-on-snow events

• University: Ecole polytechnique fédérale de Lausanne (EPFL)

• Supervisor: Dr. Tobias Jonas

• Examiner: Prof. Dr. Michael Lehning

• Co-Examiner: Prof. Dan Moore, Prof. Juraj Parajka, Prof. Alexis Berne

Completed Dissertations

Clare Webster (2013 - 2017)

• Title of PhD thesis: Measurement and modelling of sub-canopy radiation to seasonal snow in alpine forests

• University: Northumbria University

• Supervisor at SLF: Dr. Tobias Jonas

• Supervisor in Northumbria: Dr. Nick Rutter

David C Moeser (2012 - 2016)

• Title of PhD thesis: The influence of forest canopy structure on snow hydrology

• University: Swiss Federal Institute of Technology Zurich (ETHZ)

• Supervisor: Dr. Tobias Jonas

• Examiner: Prof. Dr. Harald Bugmann

• Co-Examiner: Prof. Dr. Jan Seibert, Dr. Felix Morsdorf

Florian Kobierska (2010 - 2014)

• Title of PhD thesis: Hydrology of a glacierized catchment across temporal and spatial scales

• University: Swiss Federal Institute of Technology Zurich (ETHZ)

• Supervisor: Dr. Tobias Jonas

• Examiner: Prof. Dr. Stefano Bernasconi

• Co-Examiner: Prof. Dr. James Kirchner, Prof. Dr. Mario Schirmer

Jan Magnusson (2007 - 2011)

• Title of PhD thesis: Hydrological conditions on the forefield of a retreating glacier

• University: Swiss Federal Institute of Technology Zurich (ETHZ)

• Supervisor: Dr. Tobias Jonas

• Examiner: Prof. Dr. James Kirchner

• Co-Examiner: Prof. Dr. Jan Seibert

Luca Egli (2007 - 2011)

• Title of PhD thesis: Dynamic of Snow Cover’s Spatial Distribution over Alpine Topography

• University: Swiss Federal Institute of Technology Zurich (ETHZ)

• Supervisor: Dr. Tobias Jonas

• Examiner: Prof. Dr. Paolo Burlando

• Co-Examiner: Prof. Dr. John W. Pomeroy