Ir. V.J.H. (Victor) Trees


I have been a PhD candidate at the Department of Geoscience and Remote Sensing since February 2020. I completed my MSc. Spaceflight at the Aerospace Engineering faculty at TU Delft, where I was studying the polarization of light reflected by Earth-like planets beyond our solar system. I continued doing research on radiative transfer for 9 months at University of Oxford, focussing on hot Jupiter-like planets.


I am working on the detection of cloud shadows on Earth with the TROPOspheric Monitoring Instrument (TROPOMI) on board of the Sentinel-5P satellite and I am analyzing the impact of cloud shadows on the TROPOMI air quality measurements. The research is a cooperation between TU Delft and R&D Satellite Observations at the Royal Netherlands Meteorological Institute (KNMI). I use the 3D radiative transfer components of the Earth Clouds and Aerosol Radiation Explorer (EarthCARE) simulator (ECSIM) together with 3D high resolution cloud fields generated using the Large-Eddy Simulations (LES) model to simulate TROPOMI measurements. The objective of my research is to improve the TROPOMI Absorbing Aerosol Index and NO2 products.

  • Teaching assistent, CIE4601 Physics of the Earth and Atmosphere 2020/2021
  • Trees, V., Wang, P. and Stammes, P., (2020), 'Restoring the top-of-atmosphere reflectance during solar eclipses: a proof of concept with the UV Absorbing Aerosol Index measured by TROPOMI', Accepted for publication in Atmospheric Chemistry and Physics
  • Kooreman, M.L., Stammes, P., Trees, V., Sneep, M., Tilstra, L.G., de Graaf, M., Stein Zweers, D.C., Wang, P., Tuinder, O.N.E., and Veefkind, J.P. (2020), 'Effects of clouds on the UV Absorbing Aerosol Index from TROPOMI', Atmospheric Measurement Techniques, 13, 6407-6426
  • Groot, A., Rossi, L., Trees, V.J.H., Cheung, J.C.Y., and Stam, D.M. (2020), â€˜Colors of an Earth-like exoplanet', Astronomy & Astrophysics, 640, A121
  • Trees, V.J.H. and Stam, D.M. (2019), 'Blue, white and red ocean planets. Orbital variations in flux and polarization colors', Astronomy & Astrophysics, 626, A129

Victor Trees

PhD Candidate

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