Dr. ir. J. (Joris) Timmermans


From an early age on I have been interested in advancing science to help society face upcoming threats. At TU Delft, I use my engineering-perspective (obtained from an MSc in Applied Physics at the Utwente), and my expertise in Earth observation (courtesy of a PhD at ITC, and postdocs at UCL and Leiden University), to address international policies revolving around droughts, biodiversity and climate change, by developing innovative remote sensing monitoring systems.


There are significant opportunities for optical satellite remote sensing (SRS) to contribute to mitigating the impacts of environmental disasters. My research vision focuses on developing solutions for optical remote sensing to be used together with other satellite observations, model the impacts of environmental disasters and develop digital twins. Specifically, I aim to tackle the challenges  regarding multi-sensor synergies, algorithm development and data integration into models.

Within the TU Delft, I am currently organise the Earth Observation Course, embedded in the Space Missions Minor of the Faculty of Aerospace Engineering. 

Timmermans, J. and Kissling, W.D., Advancing terrestrial biodiversity monitoring with satellite remote sensing in the context of the Kunming-Montreal global biodiversity framework, Ecological Indicators, 154, e110773, https://doi.org/10.1016/j.ecolind.2023.110773 

Quaife, T., Pinnington, E., Marzahn, P., Kaminski, T., Vossbeck, M., Timmermans, J., Isola, C., Rommen, B., and Loew, A. (2021), Synergistic Retrievals of Leaf Area Index and Soil Moisture from Sentinel--1 and Sentinel—2, 2022, International Journal of Image and Data Fusion, https://doi.org/10.1080/19479832.2022.2149629

Chen, Q., Timmermans, J., van Bodegom, P., A multi-metric assessment of drought vulnerability across different vegetation types using high resolution remote sensing (2022), Science of the Total Environment, Vol 832, 154970, https://doi.org/10.1016/j.scitotenv.2022.154970

Hauser, L.T., Timmermans, J., van der Windt, N., Sil, F.A., de Sa, C.N, Soudzilovskaia, N.A., van Bodegom, P.M., Explaining discrepancies between spectral and in-situ plant diversity in multispectral satellite earth observation (2021), Remote sensing of Environment, 265, 112684, 12p, https://doi.org/10.1016/j.rse.2021.112684.

Wen, W.., Timmermans, J., Chen, Q., van Bodegom, P., (2021) A review of remote sensing challenges for food security with respect to salinity and drought threats, Remote Sensing, (13), 6. https://doi.org/10.3390/rs13010006.

J. Timmermans, C. Van der Tol, A. Verhoef, W. Verhoef, Z. Su, M. Van Helvoirt, L. Wang, Quantifying the Uncertainty in Estimates of Surface Atmosphere Fluxes by evaluation of SEBS and SCOPE models (2013), Hydrol. Earth Syst. Sci. Discuss. 17(4): 1561-1573, https://doi.org/10.5194/hess-17-1561-2013

J. Timmermans, W. Verhoef, C. van der Tol and Z. Su, Retrieval of Canopy component temperatures through Bayesian inversion of directional thermal measurements (2009), in Hydrol. Earth Syst. Sci. 13, 1249–1260, https://doi.org/10.5194/hess-13-1249-2009.

C. van der Tol, W. Verhoef, J. Timmermans, A. Verhoef, and Z. Su, An integrated model of soil-canopy spectral radiance observations, photosynthesis, fluorescence, temperature and energy balance. Part I. Model structure, Biogeosciences (2009), 6, 6025-6075. https://doi.org/10.5194/bg-6-3109-2009 

I was recently interviewed by the Netherlands Space Office, concerning my vision regarding remote sensing monitoring of biodiversity.. https://www.spaceoffice.nl/nl/nieuws/750/-we-zoeken-innovatieve-satelliettoepassingen-voor-het-monitoren-van-de-biodiversiteit-.html 

I am presently acting as a Jury member for the SBIR competition” Satellietdata ten behoeve van biodiversiteit in Nederland: subthema natuur”.

Joris Timmermans

Assistant Professor

Monday, Tuesday & Friday at campus

Research Gate