Christiaan van der Tol (1978) is an assistant professor in 'Ecohydrology and Earth Observation' at the Water Resources department.

Education

He supervises MSc students in the department of Water Resources. He also teaches topics in hydrological processes, retrieval of biochemical parameters and fieldwork skills.

Research

His research focuses on interactions between ecosystems, climate and hydrology. His interests are:

• Hydrological and micro-meteorological measurements
• The use of remote sensing in eco-hydrology
• Integrating radiative transfer and micro-meteorological modeling
• Data assimilation
• Chlorophyll fluorescence
• Production ecology

Current activities

• Development of the SCOPE model
• Member of WACMOS
• Member of CEOP-AEGIS project

Past activities

• MSc Hydrology at Wageningen University (2001)
• PhD 'Climatic constraints on assimilation and transpiration of sub-Mediterranean forest' at the Vrije Universiteit, Amsterdam (2007)
• PostDoc at ITC, Department of Water Resources (2006-2008)

Publications

ISI Journal Articles

Lee, J.-E., Frankenberg, C., van der Tol, C., Berry, J.A., Guanter,L., Boyce, C.K., Fisher, J.B., Morrow, E., Worden, J.R., Asefi, S., Badgley, G. and Saatchi, S. (2013) Forest productivity and water stress in Amazonia : observations from GOSAT chlorophyll fluorescence. In: Proceedings of the Royal Society B : Biological Sciences, 280(2013)1761, article no. 20130171, 9 p. Full text

Weligepolage, K., Gieske, A.S.M., van der Tol, C., Timmermans, J. and Su, Z. (2012) Effect of sub - layer corrections on the roughness parameterization of a Douglas fir forest. In: Agricultural and forest meteorology, 162-163 (2012) pp. 115-126. Full text | Full text

Tian, X., Su, Z., Chen, E., Li, Z. and van der Tol, C. (2012) Estimation of forest above - ground biomass using multi - parameter remote sensing data over a cold arid area. In: International Journal of Applied Earth Observation and Geoinformation : JAG, 14 (2012)1 pp. 160-168. Full text | Full text

Gökmen, M., Vekerdy, Z., Verhoef, A., Verhoef, W., Batelaan, O. and van der Tol, C. (2012) Integration of soil moisture in SEBS for improving evapotranspiration estimation under water stress conditions. In: Remote sensing of environment, 121 (2012) pp. 261-274. Full text | Full text

van der Tol, C. (2012) Validation of remote sensing of bare soil ground heat flux. In: Remote sensing of environment, 121 (2012) pp. 275-286. Full text | Full text

Tian, X., Li, Z.Y., van der Tol, C., Su, Z., Li, X., He, Q.S., Bao, Y.F., Chen, E.X. and Li, L.H. (2011) Estimating zero - plane displacement height and aerodynamic roughness length using synthesis of LiDAR and SPOT - 5 data. In: Remote sensing of environment, 115 (2011)9 pp. 2330-2341. Full text | Full text

de Bruin, H.A.R., Trigo, I.F., Jitan, M.A., Temesgen Enku, N., van der Tol, C. and Gieske, A.S.M. (2010) Reference crop evapotranspiration derived from geo - stationary satellite imagery : a case study for the Fogera flood plain, NW - Ethiopia and the Jordan Valley, Jordan. In: Hydrology and earth system sciences (HESS) : open access, 14 (2010)11 pp. 2219-2228. Full text | Full text

Timmermans, J., Gieske, A.S.M., van der Tol, C., Verhoef, W. and Su, Z. (2009) Automated directional measurement system for the acquisition of thermal radiative measurements of vegetative canopies. In: Sensors : journal on the science and technology of sensors and biosensors : open access, 9 (2009)3 pp. 1409-1422. Full text | Full text

van der Tol, C., van der Tol, S., Verhoef, A., Su, Z., Timmermans, J., Houldcroft, C. and Gieske, A.S.M. (2009) A Bayesian approach to estimate sensible and latent heat over vegetated land surface. In: Hydrology and earth system sciences (HESS) : open access, 13 (2009)1 pp. 749-758. Full text | Full text

Su, Z., Timmermans, W.J., van der Tol, C., Dost, R.J.J., Bianchi, R., Gómez, J.A., House, A., Hajnsek, I., Menenti, M., Magliulo, V., Esposito, M., Haarbrink, R., Bosveld, F.C., Rothe, R., Baltink, H.K., Vekerdy, Z., Sobrino, J.A., Timmermans, J., van Laake, P.E., Salama, M.S., van der Kwast, H. and ... [et al.] (2009) EAGLE 2006 : multi purpose, multi angle, and multi sensor in situ and airborne campaigns over grassland and forest. In: Hydrology and earth system sciences (HESS) : open access, 13 (2009)6 pp. 833-845. Full text | Full text

van der Tol, C., Verhoef, W., Timmermans, J., Verhoef, A. and Su, Z. (2009) An integrated model of soil - canopy spectral radiances, photosynthesis, fluorescence, temperature and energy balance. In: Biogeosciences, BG : An Interactive Open Access Journal of the European Geosciences Union, 6 (2009)12 pp. 3109-3129. Full text | Full text

van der Tol, C., Verhoef, W. and Rosema, A. (2009) A model for chlorophyll fluorescence and photosynthesis at leaf scale. In: Agricultural and forest meteorology, 149 (2009)1 pp. 96-105. Full text | Full text

Timmermans, J., Verhoef, W., van der Tol, C. and Su, Z. (2009) Retrieval of canopy component temperatures through Bayesian inversion of directional thermal measurements. In: Hydrology and earth system sciences (HESS) : open access, 13 (2009)7 pp. 1249-1260. Full text | Full text

Li, L., Yu, Q., Su, Z. and van der Tol, C. (2009) A simple method using climatic variables to estimate canopy temperature, sensible and latent heat fluxes in a winter wheat field on the North China Plain. In: Hydrological processes, 23 (2009)5 pp. 665-674. Full text | Full text

Timmermans, J., van der Tol, C., Verhoef, W. and Su, Z. (2008) Contact and directional radiative temperature measurements of sunlit and shaded land surface components during the SEN2FLEX 2005 campaign. In: International journal of remote sensing, 29 (2008)17-18 pp. 5183-5192. Full text | Full text

van der Tol, C. and ... [et al.] (2008) Optimum vegetation characteristics, assimilation, and transpiration during a dry season: 1. Model description. In: Water resources research, 44 (2008)art. W03421 Full text | Full text

van der Tol, C. and ... [et al.] (2008) Optimum vegetation characteristics, assimilation, and transpiration during a dry season: 2. Model evaluation. In: Water resources research, 44 (2008)art. W03422 Full text | Full text

van der Tol, C. and ... [et al.] (2007) Topography induced spatial variations in diurnal cycles of assimilation and latent heat of mediterranean forest. In: Biogeosciences, 4(2007)1, pp. 137-154. Full text | Full text

van der Tol, C. and ... [et al.] (2003) Average wet canopy evaporation for a Sitka spruce forest derived using the eddy correlation - enery balance technique. In: Journal of hydrology, 276 (2003)1-4 pp. 12-19. Full text | Full text

Book Chapters

van der Tol, C. and Parodi, G.N. (2012) Guidelines for remote sensing of evapotranspiration. In: Evapotranspiration : remote sensing and modeling / ed. by A. Irmak. - Rijeka : InTech, 2012. 514 p ISBN 978-953-307-808-3 pp. 227-250. Full text | Full text

Gökmen, M., van der Tol, C., Vekerdy, Z., Verhoef, W. and ... [et al.] (2012) Towards an improved mapping of evapotranspiration in semi - arid regions. In: Remote Sensing and Hydrology, Proceedings of the 2010 Symposium held at Jackson Hole, Wyoming, 27-30 September 2010 / ed. by C.M.U. Neale and M.H. Cosh. Wallingford: IAHS, 2012. ISBN 978-1-907161-27-8. (IAHS Publication 352) pp. 149-153. Full text

Enku Nigussie, T., van der Tol, C., Gieske, A.S.M. and Rientjes, T.H.M. (2011) Evapotranspiration modeling using remote sensing and empirical models in the Fogera floodplain, Ethiopia. In: Nile River Basin : Hydrology, Climate and Water Use : e-book / editor A.M. Melesse. - Dordrecht : Springer, 2011. - 419 p. ISBN 978-94-007-0689-7. pp. 163-178. Full text | Full text

PhD Theses

Timmermans, J., Su, Z. (Promotor) , Verhoef, W. (Promotor) and van der Tol, C. (assistant promotor)  (2011) Coupling optical and thermal directional radiative transfer to biophysical processes in vegetated canopies. Enschede, University of Twente Faculty of Geo-Information and Earth Observation (ITC), 2011. ITC Dissertation 193, ISBN: 978-90-6164-313-5. Full text

van der Tol, C. (2007) Climatic constraints on carbon assimilation and transpiration of sub - mediterranean forests. Amsterdam, Vrije Universiteit Amsterdam, 2007. ISBN: 90-86590-67-5. Full text

Conference Proceedings (full papers)

Su, Z., Ma, Y., van der Velde, R., Dente, L., Wang, L., Timmermans, J., Menenti, M., Sobrino, J., Li, Z.L., Verhoef, W., Jia, L., Wen, J., He, Y., Wan, L., Li, W., Liu, Q.H., Yu, Q., Li, X., Zhong, L., Zeng, Y., Tian, X., Li, L., Qin, C., Timmermans, W.J., van Helvoirt, M.D., van der Tol, C., Salama, M.S. and Vekerdy, Z. (2012) Drought monitoring, prediction and adaptation under climatic changes. In: Proceedings of Dragon 2 final results and Dragon 3 kickoff symposium, 25-29 June 2012, Beijing / ed. by L. Ouwehand. Noordwijk: European Space Agency (ESA), 2013. ISBN: 92-9092-268-1. 13 p. Full text

Balugani, E., Reyes-Acosta, J.L., van der Tol, C., Francés, A.P. and Lubczynski, M.W. (2011) Partitioning and sourcing of dry season ET fluxes at the footprint of the eddy covariance tower in sardon semi - arid location in Spain + poster. In: Estudios en la zona no saturada del suelo : volumen X : ZNS11 proceedings, 19-21 October 2011, Salamanca, Spain : e-book / editor J.M. Fernández, , N.S. Martin. - Salamanca : Universidad de Salamanca, 2011. - 370 p. ISBN 978-84-694-6642-1. pp. 297-302 + 1 p. Full text | Full text

Francés, A.P., Reyes-Acosta, J.L., Balugani, E., van der Tol, C. and Lubczynski, M.W. (2011) Towards an improved assessment of the water balance at the catchment scale : a coupled model approach + powerpoint. In: Estudios en la zona no saturada del suelo : volumen X : ZNS11 proceedings, 19-21 October 2011, Salamanca, Spain : e-book / editor J.M. Fernández, , N.S. Martin. - Salamanca : Universidad de Salamanca, 2011. - 370 p. ISBN 978-84-694-6642-1. pp. 321-326 + 10 slides. Full text | Full text

Su, Z., Ma, M., Menenti, M., Sobrino, J.A., Li, Z.L., Verhoef, W., Jia, L., Wen, J., He, Y., Wan, L., Hiu, Q.H., Yu, Q., Li, Xin, van der Velde, R., Dente, L., Zhong, L., Zeng, Y., Tian, X., Li, L., Qin, C., Wang, L., van Helvoirt, M.D., Timmermans, W.J., van der Tol, C., Salama, M.S., Vekerdy, Z. and Ucer, M. (2010) Drought monitoring, prediction and adaptation under climatic changes. In: Proceedings of the symposium : Dragon 2 programme mid - term results 2008 - 2010, 17-21 May 2010, Guilin City, China / editor H. Lacoste-Francis. - Noordwijk : European Space Agency (ESA), 2010. - ; 19 cm. ISBN 978-92-9221-248-3. (ESA - SP : special publication, ISSN 1609-042X ; 684) 13 p. Full text

Timmermans, J., van der Tol, C., Verhoef, A., Wang, L., van Helvoirt, M.D., Verhoef, W. and Su, Z. (2010) Quantifying the uncertainty in estimates of surface atmosphere fluxes by evaluation of sebs and scope models. In: Proceedings of the symposium earth observation and water cycle science, 18-20 November 2009, Frascati, Italy / H. Lacoste-Francis. - Noordwijk : European Space Agency (ESA), 2010. - (ESA - SP : special publication ; 674). ISBN 978-92-9221-238-4. 6 p. Full text

Timmermans, J., van der Tol, C., Weligepolage, K., Vekerdy, Z., Jia, L. and Su, Z. (2007) BRDFs acquired by directional radiative measurements during EALE and AGRISAR. In: Proceedings of the AGRISAR and EAGLE campaigns, final workshop, 15-16 October, 2007. ESA/ESTEC, Noordwijk, The Netherlands. ESA, 2007 (ESA Proceedings WPP-279) 6 p. Full text

van der Tol, C., Verhoef, W., Timmermans, J., Su, Z. and Hartogensis, O. (2007) A combined radiative transfer and micrometeorological model. In: Proceedings of the AGRISAR and EAGLE campaigns, final workshop, 15-16 October, 2007. ESA/ESTEC, Noordwijk, The Netherlands. ESA, 2007 (ESA Proceedings WPP-279) 7 p. Full text

Su, Z., Timmermans, W.J., Dost, R.J.J., Bianchi, R., Gómez, J.A., House, A., Hajnsek, I., Menenti, M., Magliulo, V., Esposito, M., Haarbrink, R., Bosveld, F.C., Vekerdy, Z., Sobrino, J.A., van der Tol, C., van Laake, P.E., Al-Khaier, F. and ... [et al.] (2007) EAGLE 2006 : multi - purpose, multi - angle and multi - sensor in - situ and airborne campaigns over grassland and forest. In: Proceedings of the AGRISAR and EAGLE campaigns, final workshop, 15-16 October, 2007. ESA/ESTEC, Noordwijk, The Netherlands. ESA, 2007 (ESA Proceedings WPP-279) 11 p. Full text

van der Tol, C. (2007) A model for chlorophyll fluorescence and photosynthesis at leaf scale. In: Proceedings of the 3nd international workshop on remote sensing of vegetation fluorescence, 7-9 February 2007, Florence Italy. Noordwijk : ESA, 2007. 4 p. Full text

Scientific and Professional Publications

Fernandez Prieto, D., Su, Z., Dorigo, W., van Helvoirt, M.D., Hungershoefer, K., de Jeu, R., Parinussa, R., Roebeling, R., Schröder, M., Schulz, J., Stammes, P., Timmermans, J., van der Tol, C., Wagner, W., Wang, L. and ... [et al.] (2010) WACMOS : a water cycle multimission observation strategy. In: GEWEX Global Energy and Water Cycle Experiment News, 20(2010)2, pp. 9-11. Full text | Full text

Presentations

Odongo, V.O., Mulatu, D.W., Muthoni, F.K., Ndung'u, J., Meins, F., Mudereri, B.T., van der Tol, C., Becht, R., Su, Z., van Oel, P.R., van der Veen, A., Onyando, J.O., Augustijn, D., Hulscher, S.J.M.H., Kitaka, N., Mathooko, J.M., Oting'a-Owiti, G.E., Groen, T.A. and Skidmore, A.K. (2012) Land use and land cover changes on a tropical lake basin : the socioeconomic drivers and cascading impacts on hydrology and ecological system + powerpoint. Presented at: The 7th ESRI Eastern Africa User Conference (EAUC), 3-5 October, 2012, Naivasha, Kenya. 20 slides. Full text | Full text

Francés, A.P., Lubczynski, M.W., Reyes-Acosta, J.L., Balugani, E., van der Tol, C. and Hassan, T. (2012) Partitioning and sourcing of subsurface water fluxes at the catchment scale : modeling approach, part 2. : abstract. In: Proceedings of Confronting climate change : 39th IAH congres, 16-21 September 2012 Niagara Falls, Canada. 1 p. Full text | Full text

Balugani, E., Reyes-Acosta, J.L., van der Tol, C. and Lubczynski, M.W. (2012) Partitioning and sourcing of dry season subsurface water fluxes at the footprint of the eddy covariance tower - experimental approach, part 1 : abstract. In: Proceedings of Confronting climate change : 39th IAH congres, 16-21 September 2012 Niagara Falls, Canada. 1 p. Full text | Full text

Francés, A.P., Reyes-Acosta, J.L., Balugani, E., van der Tol, C. and Lubczynski, M.W. (2011) Assessment of catchment water balance using distributed and transient coupled models of the unsaturated and saturated zones. Presented at ModelCare 2011 : models : repositories of knowledge, 18-22 September 2011, Leibzig, Germany. 2 p. Full text

Su, Z., Ma, Y., van der Velde, R., Dente, L., Wang, L., Menenti, M., Sobrino, J., Li, Z.L., Verhoef, W., Jia, L., Wen, J., He, Y., Li, W., Liu, Q., Yu, Q., Li, X., Zhong, L., Zheng, Y., Tian, X., Li, L., Qin, C., Timmermans, W.J., van Helvoirt, M.D., van der Tol, C., Salama, M.S. and Vekerdy, Z. (2011) Drought monitoring, prediction and adaptation under climatic changes : abstract. In: ESA - MOST Dragon 2 symposium, 20-24 June 2011, Prague, Czech Republic. 1 p. Full text | Full text

Timmermans, J., van der Tol, C., Verhoef, A., Verhoef, W., Su, Z., van Helvoirt, M.D. and Wang, L. (2011) Evaluation of the SEBS parameterizations over tall vegetation using SCOPE estimated turbulent fluxes : abstract. In: Geophysical Research Abstracts, 13(2011) EGU2011-11647, EGU general assembly 2011. 1 p. Full text | Full text

Timmermans, J., van der Tol, C., Su, Z., van Helvoirt, M.D. and Wang, L. (2011) Validation of SEBS high resolution evapotranspiration estimations using ground measurements over Europe : abstract. In: Geophysical Research Abstracts, 13(2011) EGU2011-12730, EGU general assembly 2011. 1 p. Full text | Full text

Aghdasi, F., Sharifi, M.A. and van der Tol, C. (2010) Assessment of crop water requirement methods for annual agricultural water allocation planning : abstract. In: Geophysical Research Abstracts, 12(2010) EGU2010-15604, EGU general assembly 2010. 1 p. Full text | Full text

Rwasoka, D.T., Reyes-Acosta, J.L., van der Tol, C., Su, Z. and Lubczynski, M.W. (2010) Evapotranspiration in water limited environments : up - scaling from the crown canopy to the eddy flux footprint + poster. In: Geophysical Research Abstracts, 12(2010) EGU2010-15540, EGU general assembly 2010. 1 p. Full text | Full text | Full text

van der Tol, C. and Verhoef, W. (2009) Monitoring GPP using chlorophyll fluorescence : abstract. Presented at the 2009 AGU fall meeting, 14-18 December, San Francisco, USA. 1 p. Full text

van der Tol, C., Meesters, A.G.C.A., Dolman, A.J. and Waterloo, M.J. (2009) Using the optimality hypothesis to predict vegetation indices in a water limited environment : abstract. Presented at the AGU fall meeting, 15-18 December, San Francisco, USA. 1 p. Full text

van der Tol, C., Timmermans, J., van der Tol, S., Su, Z. and Timmermans, W.J. (2008) A Bayesian approach to improve remote sensing of sensible and latent heat fluxes : abstract. In: Geophysical research abstracts : EGU general assembly 2008, 10(2008). 2 p. Full text | Full text

van der Tol, C., Verhoef, W., Verhoef, A., Houldcroft, C.J., Timmermans, J., Su, Z. and Timmermans, W.J. (2008) Exploring the potential of an integrated radiative transfer and surface energy balance model. In: Geophysical research abstracts : EGU general assembly 2008, 10(2008). 1 p. Full text | Full text

Timmermans, J., van der Tol, C., Verhoef, W., Vekerdy, Z., van Laake, P.E. and Su, Z. (2008) Intercomparison of SAIL and DART over a pine forest using laserscan derived structural parameters. In: Geophysical research abstracts : EGU general assembly 2008, 10(2008). 2 p. Full text | Full text

Timmermans, J., van der Tol, C., Verhoef, W., Jia, L. and Su, Z. (2007) Directional radiative measurements on forest, hey and young maize during the EAGLE2006 field campaign : abstract. Presented at European Geo-sciences Union, 15-20 april 2007, Vienna, Austria. 1 p. Full text

van der Tol, C., Su, Z., Gieske, A.S.M., Timmermans, J., Timmermans, W.J. and Jia, L. (2007) Fluxes of energy, carbon dioxide and water measured over a vineyard in Barrax, Spain, during SPARKS and SEN2FLEX campaigns : abstract. In: EGU 2007 : European Geosciences Union : general assembly, Vienna, Austria, 15-20 April, 2007. Geophysical Research Abstracts, 9(2007)10011, 1 p. Full text | Full text

Timmermans, J., van der Tol, C., Weligepolage, K., Jia, L., Vekerdy, Z. and Su, Z. (2007) Optical and thermal directional signatures of typical Dutch vegetation : abstract. Presented at AgriSAR and EAGLE Campaigns Final Workshop, 15-16 October 2007, ESA, ESTEC, Noordwijk. 1 p. Full text

Timmermans, J., Verhoef, W., Weligepolage, K., van der Tol, C. and Su, Z. (2007) Simulation of Sentinel 2 using AHS data : abstract. Presented at AgriSAR and EAGLE Campaigns Final Workshop, 15-16 October 2007, ESA, ESTEC, Noordwijk. 1 p. Full text

van der Tol, C., Dolman, A.J. and Waterloo, M.J. (2006) Diurnal and seasonal cycles of transpiration of Mediterranean forests explained by adaptation to climate and soil conditions : abstract. In: EGU 2006 : European Geosciences Union : general assembly abstract book, Vienna, Austria, 02 April, 2006. Geophysical Research Abstracts, 8(2006)06790, 1 p. Full text | Full text