Bart van Stratum

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I am a researcher, mostly studying turbulent processes in the atmospheric boundary layer, using and developing tools like large-eddy simulation and conceptual models.

After studying meteorology at the Wageningen University (Netherlands), I obtained my doctoral degree at the Max Planck Institute for Meteorology in Hamburg (Germany). I currently work as a researcher at Wageningen University & Research (WUR).

Outside work, I enjoy cycling and hiking, and bike packing/touring and backpacking trips.

Model development

Both professionally and as a hobby, I enjoy programming and developing meteorological models. Over the years, I have been involved in the development of several models, most notably MicroHH.

MicroHH

MicroHH is a computational fluid dynamics code, designed for DNS and LES studies of turbulent flows in the atmosphere. The model was created from scratch in C++, with the goal of being a fast and massively parallel code, capable of running on more than 32'000 CPU cores. It can also run on Graphical Processing Units (GPUs) using NVIDIA's CUDA-C++ language. The current version supports a wide variety of setups, ranging from DNS of neutral channel flows, to nested LESs of real weather including (3D) radiation, microphysics, land-atmosphere interactions, and non-linear chemistry. The 1.0 release of MicroHH is described in van Heerwaarden et al. (2017).

To simulate real-life weather in MicroHH, we developed an open-source Python package called (LS)²D. This package provides a one-way coupling between the global ERA5 reanalysis and MicroHH. For further details, see van Stratum et al. (2023).

Our Vimeo channels: (1) and (2) contain animations showcasing the typical research done with MicroHH.

Projects

Publications

Peer reviewed

  1. B. Postema, C.C. van Heerwaarden, B.J.H. van Stratum, P. van Dorp, P. Baas, and H.J.J. Jonker (2026): Simulating the year to minute wind spectrum with mesoscale-coupled large-eddy simulations. Q. J. R. Meteorol. Soc., e70147. (10.1002/qj.70147)
  2. D. Goossens, P. Harkes, B.J.H. van Stratum, and M. Rezaei (2026): Atmospheric dynamics of glyphosate and AMPA in agricultural areas. Environ. Sci. Pollut. Res., 33(4), 1215–1236. (10.1007/s11356-026-37409-4)
  3. M. Mangan, J. Vilà-Guerau de Arellano, B.J.H. van Stratum, M. Lothon, G. Canut-Rocafort, and O.K. Hartogensis (2025): The spatiotemporal evolution of atmospheric boundary layers over a thermally heterogeneous landscape. Atmos. Chem. Phys., 25(15), 8959–8981. (10.5194/acp-25-8959-2025)
  4. C.V.W. Riess, F. Boersma, A. Prummel, B.J.H. van Stratum, J. de Laat, and J. van Vliet (2025): Estimating NOx emissions of individual ships from TROPOMI NO2 plumes. Remote Sens. Environ., 324, 114734. (10.1016/j.rse.2025.114734)
  5. A. Karagodin-Doyennel, F. Jansson, B.J.H. van Stratum, H. Denier van der Gon, J. Vilà-Guerau de Arellano, and S. Houweling (2025): Carbon dioxide plume dispersion simulated at the hectometer scale using DALES: model formulation and observational evaluation. Geosci. Model Dev., 18(14), 4571–4599. (10.5194/gmd-18-4571-2025)
  6. M. Tijhuis, B.J.H. van Stratum, and C.C. van Heerwaarden (2024): The impact of coupled 3D shortwave radiative transfer on surface radiation and cumulus clouds over land. Atmos. Chem. Phys., (10.5194/acp-24-10567-2024)
  7. M.C. Krol, B.J.H. van Stratum, I. Anglou and K.F. Boersma (2024). Evaluating NOx stack plume emissions using a high-resolution atmospheric chemistry model and satellite-derived NO2 columns. Atmos. Chem. Phys. (10.5194/acp-24-8243-2024)
  8. J. Hakkarainen, G. Kuhlmann, E. Koene, D. Santaren, S. Meier, M.C. Krol, B.J.H. van Stratum, I. Ialongo, F. Chevallier, J. Tamminen and D. Brunner (2024). Analyzing nitrogen dioxide to nitrogen oxide scaling factors for data-driven satellite-based emission estimation methods: A case study of Matimba/Medupi power stations in South Africa. Atmospheric Pollution Research. (10.1016/j.apr.2024.1021710)
  9. B.J.H. van Stratum, C.C. van Heerwaarden, & J. Vilà-Guerau de Arellano (2023). The benefits and challenges of downscaling a global reanalysis with doubly-periodic large-eddy simulations. Journal of Advances in Modeling Earth Systems. (10.1029/2023MS003750)
  10. W.B. Mol, B.J.H. van Stratum, W.H. Knap, & C.C. van Heerwaarden (2023). Reconciling observations of solar irradiance variability with cloud size distributions. Journal of Geophysical Research: Atmospheres. (10.1029/2022JD037894)
  11. J. Vilà‐Guerau de Arellano, O. Hartogensis, I. Benedict, H. De Boer, ..., B.J.H. van Stratum, ... & C.C. van Heerwaarden (2023). Advancing understanding of land–atmosphere interactions by breaking discipline and scale barriers. Annals of the New York Academy of Sciences. (10.1111/nyas.14956)
  12. M. Janssens, J. Vila-Guerau de Arellano, C.C. van Heerwaarden, B.J.H. van Stratum, S.R. De Roode, A.P. Siebesma, and F. Glassmeier (2022): The time scale of shallow convective self-aggregation in large-eddy simulations is sensitive to numerics. J. Adv. Model. Earth Syst., (10.1029/2022MS003292)
  13. M. Tijhuis, B.J.H. van Stratum, M.A. Veerman, and C.C. van Heerwaarden (2022): An Efficient Parameterization for Surface Shortwave 3D Radiative Effects in Large-Eddy Simulations of Shallow Cumulus Clouds.. J. Adv. Model. Earth Syst., (10.1029/2022MS003262)
  14. M.A. Veerman, B.J.H. van Stratum, and C.C. van Heerwaarden (2022): A case study of cumulus convection over land in cloud-resolving simulations with a coupled ray tracer.. Geophys. Res. Lett., (10.1029/2022GL100808)
  15. B.J.H. van Stratum, N. Theeuwes, J. Barkmeijer, B. van Ulft, and I. Wijnant (2022): A one-year-long evaluation of a wind-farm parameterisation in HARMONIE-AROME. J. Adv. Model. Earth Syst., (10.1029/2021MS002947)
  16. R.B. Schulte, M.C. van Zanten, B.J.H. van Stratum, and J. Vilà-Guerau de Arellano (2022): Assessing representativity of NH3 measurements influenced by boundary-layer dynamics and turbulent dispersion of a nearby emission source. Atmos. Chem. Phys., (10.5194/acp-22-8241-2022)
  17. A. Raznjevic, C.C. van Heerwaarden, B.J.H. van Stratum, A. Hensen, I. Velzeboer, P. van den Bulk, and M.C. Krol (2022): Technical note: Interpretation of field observations of point-source methane plume using observation-driven large-eddy simulations. Atmos. Chem. Phys. (10.5194/acp-22-6489-2022)
  18. F. Couvreux, E. Bazile, Q. Rodier, B. Maronga, G. Matheou, M.J. Chinita, J. Edwards, B.J.H. van Stratum, C.C. van Heerwaarden, J. Huang, and A.F. Moene (2020): Intercomparison of Large-Eddy Simulations of the Antarctic Boundary Layer for Very Stable Stratification. Boundary-Layer Meteorol (10.1007/s10546-020-00539-4)
  19. B.J.H. van Stratum, B. Stevens (2018): The impact of vertical mixing biases in large-eddy simulation on nocturnal low clouds. J. Adv. Model. Earth Syst. (10.1029/2017MS001239)
  20. C.C. van Heerwaarden, B.J.H. van Stratum, T. Heus, J.A. Gibbs, E. Fedorovich, and J.P. Mellado (2017): MicroHH 1.0: a computational fluid dynamics code for direct numerical simulation and large-eddy simulation of atmospheric boundary layer flows, Geosci. Model Dev. (10.5194/gmd-2017-41).
  21. B.J.H. van Stratum, B. Stevens (2015): The influence of misrepresenting the nocturnal boundary layer on idealized daytime convection in large-eddy simulation. J. Adv. Model. Earth Syst., 07 (10.1002/2014MS000370)
  22. B.J.H. van Stratum, J. Vila-Guerau de Arellano, C.C. van Heerwaarden, and H.G. Ouwersloot (2014): Sub-cloud layer feedbacks driven by the mass-flux of shallow cumulus convection over land. J. Atmos. Sci. 71, 881–895 (10.1175/JAS-D-13-0192.1)
  23. H.G. Ouwersloot, J. Vila-Guerau de Arellano, B.J.H. van Stratum, M.C. Krol, and J. Lelieveld (2013): Quantifying the transport of sub-cloud layer reactants by shallow cumulus clouds over amazonia. J. Geophys. Res-Atmos. 118, 13,041–13,059 (10.1002/2013JD020431)
  24. B.J.H. van Stratum, J. Vila-Guerau de Arellano et al. (2012): Case study of the diurnal variability of chemically active species with respect to boundary layer dynamics during DOMINO. Atmos. Chem. Phys., 12 (12), 5329–5341 (10.5194/acp-12-5329-2012)

Books

  • J. Vila-Guerau de Arellano, C.C. van Heerwaarden, B.J.H. van Stratum, K. van den Dries (2015): Atmospheric Boundary Layer: Integrating Chemistry and Land Interactions. Cambridge Univ. Press, ISBN 9781107090941 (website)

Other

  • B.J.H. van Stratum, (2017). The influence of misrepresenting the nocturnal boundary layer on daytime convection in large-eddy simulation. PhD Thesis, Max Planck Institute for Meteorology/Universität Hamburg, Hamburg
  • B.J.H. van Stratum, S. Basu, I.L. Wijnant, J. Barkmeijer, J. Onvlee, and A.P. Siebesma, (2019). Wind turbine parametrisation in HARMONIE-AROME. KNMI technical report TR-377 (download)
  • B.J.H. van Stratum, A.P. Siebesma, J. Barkmeijer, and B. van Ulft, (2019). Downscaling HARMONIE-AROME with large-eddy simulation. KNMI technical report TR-378 (download)
  • I.L. Wijnant, B. van Ulft, B.J.H. van Stratum, J. Barkmeijer, J. Onvlee, C. de Valk, S. Knoop, S. Kok, G.J. Marseille, H. Klein Baltink, and A. Stepek, (2019). The Dutch Offshore Wind Atlas (DOWA): description of the dataset. KNMI technical report TR-380 (download)