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Dr. Philipp J. Griewank

Address Pohligstr. 3, 50969 Köln
Room 3.117
Phone +49 (0)221 470-6490
Fax +49 (0)221 470-5161
Mail philipp.griewankSpamProtectionuni-koeln.de



Research Interests

  • Clouds and convection
  • Parametrization development
  • Multi-phase thermodynamics
  • Numerical geophysical fluid dynamics
  • Sea-ice forecasting and data assimilation
  • Modelling sea-ice thermodynamics & dynamics


  • Current project: Size Decompositions of Observed and Simulated Shallow Convective Cloud Fields 
  • Previous project: HD(CP)2: Probability density function cloud schemes for ICON and their interaction with radiation.
  • Previous project: Towards a next generation sea ice forecasting platform covering the Barents and Kara Seas (see here and here).

Code repositories


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

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

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

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.