Philipp GRIEWANK
Dipl.Met. Dr.

philipp.griewank(at)univie.ac.at

Josef-Holaubek-Platz 2 (UZA II), 1090 Wien
Raumnummer: 2G504
T: +43-1-4277-537 78

Research Interests

Data assimilation and observation impact assesment
Parametrization development for clouds and convection
Multi-phase thermodynamics and geophysical fluid dynamics
Sea-ice thermodynamics & dynamics

Courses taught at Uni Wien

Numerical weather forecast
Bachelorseminar
Advanced data assimilation
Data Assimilation and Ensemble Methods
Fundamentals of weather forecasting
Weather disussion

Publications

Jyoti K, Griewank P, Meier F, Weissmann M. The benefits of a hybrid-3DEnVar data assimilation scheme for the convection-permitting NWP model AROME–Austria. Quarterly Journal of the Royal Meteorological Society. 2026 Mai 12. doi: 10.1002/qj.70207

Davy R, Regan H, Korosov A, Dörr J, Griewank P, Olason E. A Fair Assessment of Sea Ice Age Reduces Bias and Gives New Insight to Arctic Sea Ice Dynamics. Geophysical Research Letters. 2025 Sept. 28;52(18):e2025GL117765. doi: 10.1029/2025GL117765

Davy R, Griewank P. Arctic amplification has already peaked. Environmental Research Letters. 2023 Aug. 1;18(8):084003. doi: 10.1088/1748-9326/ace273

Griewank PJ , Weissmann M, Necker T, Nomokonova T, Löhnert U. Ensemble‐based estimates of the impact of potential observations. Quarterly Journal of the Royal Meteorological Society. 2023 Juli 1;149(754):1546-1571. Epub 2023 Apr. 7. doi: 10.1002/qj.4464

Necker T, Hinger D, Griewank P, Miyoshi T, Weissmann M. Guidance on how to improve vertical covariance localization based on a 1000-member ensemble. Nonlinear Processes in Geophysics. 2023 Jan. 9;30(1):13-29. doi: 10.5194/npg-30-13-2023

Publications till 2020

Griewank, Heus, Lareau, Neggers (2020): Size-dependence in chord characteristics from simulated and observed continental shallow cumulus, Atmospheric Chemistry and Physics, https://doi.org/10.5194/acp-20-10211-2020

Neggers, Griewank, Heus (2018): Powerlaw scaling in the internal variability of cumulus cloud size distributions due to subsampling and spatial organization. Journal of the Atmospheric Sciences, https://doi.org/10.1175/JAS-D-18-0194.1

Griewank, Schemann, Neggers (2018): Evaluating and improving a PDF cloud scheme using high-resolution super-large-domain simulations. Journal of Advances in Modeling Earth Systems (JAMES), https://doi.org/10.1029/2018MS001421

Wiese, Griewank and Notz (2015): On the thermodynamics of melting sea ice versus melting freshwater ice, Annals of Glaciology, http://dx.doi.org/10.3189/2015AoG69A874

Griewank and Notz (2015): A 1-D modelling study of Arctic sea-ice salinity, The Cryosphere, http://dx.doi.org/10.5194/tc-9-305-2015

Griewank and Notz (2013): Insights into brine dynamics and sea ice desalination from a 1-D model study of gravity drainage, Journal of Geophysical Research Oceans, http://dx.doi.org/10.1002/jgrc.20247

Discussion and conference papers

Bridges, Riska, Griewank, Lattes, Rampal, Bouillon (2018): Constituents of Ice Navigation Systems from Ship Based Observations during Ice Transit of Kara Sea, 24th IAHR International Symposium on Ice

Vancoppenolle, Notz, Vivier, Tison, Delille, Carnat, Zhou, Jardon, Griewank, Lourenco, and Haskell (2013): Technical Note: On the use of the mushy-layer Rayleigh number for the interpretation of sea-ice-core data, The Cryosphere Discussions, http://dx.doi.org/10.5194/tcd-7-3209-2013

Diploma Thesis

Griewank, P. J. (2010): A Conservative Scheme for the Multi-layer Shallow-water System based on Nambu Representation and the ICON Grid, Freie Univerität Berlin.

PhD Thesis

Griewank, P. J. (2013): A 1D model study of brine dynamics in sea ice, Max Planck Institute for Meteorology, Hamburg.