Max Planck Gesellschaft

Tea Thum

PostDoc in the Terrestrial Biosphere Modelling group
room: C3.005 (tower)
phone: +49 3641 576213
email: tthum(at)bgc-jena.mpg.de

Current projects

Research Interests

  • Modelling of terrestrial ecosystems at different scales
  • Boreal forests
  • Using atmospheric CO2 observations in model evaluation
  • Sun-induced chlorophyll fluorescence

Publications

Aalto, T., Hatakka, J., Karstens, U., Aurela, M., Thum, T. and Lohila, A., 2006. Modeling atmospheric CO2 concentration profiles and fluxes above sloping terrain at a boreal site. Atmospheric Chemistry and Physics, 6, 303-314.


Aalto, T., Peltoniemi, M., Aurela, M., Böttcher, K., Gao, Y., Härkönen, S., Härmä, P., Kilkki, J., Kolari, P., Laurila, T., Lehtonen, A., Manninen, T., Markkanen, T., Mattila, O.-P., Metsämäki, S., Muukkonen, P., Mäkelä, A., Pulliainen, J., Susiluoto, J., Takala, M., Thum, T., Ťupek, B., Törmä, M. and A. N. Arslan, 2015. Preface to the special issue on Monitoring and Modelling of Carbon-Balance-, Water- and Snow-Related Phenomena at Northern Latitudes. Boreal Env. Res., 20, 145–150.


Böttcher, K., Markkanen, T., Thum, T., Aalto, T., Aurela, M., Reick, C.H., Kolari, P., Arslan, A.N. and J. Pulliainen 2016. Evaluating Biosphere Model Estimates of the Start of the Vegetation Active Season in Boreal Forests by Satellite Observations. Remote Sensing, 8, 580.


Gao, Y., Markkanen, T., Thum, T., Aurela, M., Lohila, A., Mammarella, I., Kämäräinen, M., Hagemann, S., and Aalto, T., 2016. Assessing various drought indicators in representing summer drought in boreal forests in Finland, Hydrol. Earth Syst. Sci., 20, 175-191, doi:10.5194/hess-20-175-2016, 2016.


Goll, D. S., Brovkin, V., Liski, J., Raddatz, T., Thum, T., and Todd-Brown, K. E. O., 2015. Strong dependence of CO2 emissions from anthropogenic land cover change on initial land cover and soil carbon parametrization. Global Biogeochemical Cycles, 29, 1511–1523, doi:10.1002/2014GB004988.


Juurola, E., Aalto T., Thum, T., Vesala T. and Hari, P., 2005. Temperature dependence of leaf-level CO2 fixation: revising biochemical coefficients through analysis of leaf three-dimensional structure. New Phytologist, 166, 205-216.


Laurila, T., Tuovinen J.-P., Lohila A., Hatakka J., Aurela M., Thum T., Pihlatie M., Rinne J. and Vesala, T., 2005. Measuring methane emissions from a landfill using a cost-effective micrometeorological method. Geophysical Research Letters, 32, LI9808, doi: 10.1029/2005GLO23462.


Lohila, A., Laurila, T., Tuovinen, J.-P., Aurela, M., Hatakka, J., Thum, T., Pihlatie, M., Rinne, J. and Vesala, T., 2007. Micrometeorological measurements of methane and carbon dioxide at a municipal landfill. Environmental Science and Technology, 41, 2717-2722.


Louis, J., Ounis, A., Ducruet, J.-M., Evain, S., Laurila, T., Thum, T., Aurela, M., Wingsle, G., Alonso, A., Pedros, R. and Moya, I., 2005. Remote sensing of sunlight-induced chlorophyll fluorescence and reflectance of Scots pine in the boreal forest during spring recovery. Remote Sensing of Environment, 96, 37-48.


Peltoniemi M., Markkanen, T., Härkönen, S., Muukkonen, P., Thum, T., Aalto, T. and Mäkelä, A., 2015. Consistent estimates of gross primary production of Finnish forests — comparison of estimates of two process models. Boreal Environment Research, 20, 196–212.


Rinne, J., Pihlatie, M., Lohila, A., Thum, T., Aurela, M., Tuovinen, J.-P., Laurila, T. and Vesala, T., 2005. Nitrous oxide emissions from a municipal landfill. Environmental Science and Technology, 39, 7790-7793.


Thum, T., Aalto, T., Laurila, T., Aurela, M., Hatakka, J., Lindroth, A., and Vesala, T., 2009. Spring initiation and autumn cessation of boreal coniferous forest CO2 exchange assessed by meteorological and biological variables. Tellus 61B, 701-717.


Thum, T., Aalto, T., Laurila, T., Aurela, M., Kolari, P. and Hari, P., 2007. Parametrization of two photosynthesis models at the canopy scale in a northern boreal Scots pine forest. Tellus 59B, 874-890.


Thum, T., Aalto, T., Laurila, T., Aurela, M., Lindroth, A., and Vesala, T., 2008. Assessing seasonality of biochemical CO2 exchange model parameters from micrometeorological flux observations at boreal coniferous forest, Biogeosciences 5, 1625-1639.


Thum, T., MacBean, N., Peylin, P., Bacour, C., Santaren, D., Longdoz, B., Loustau, D. and Ciais, P., 2017. The potential benefit of using forest biomass data in addition to carbon and water flux measurements to constrain ecosystem model parameters: case studies at two temperate forest sites. Agricultural and Forest Meteorology 234, 48-65.


Thum, T., Zaehle, S., Köhler, P., Aalto, T., Aurela, M., Guanter, L., Kolari, P., Laurila, T., Lohila, A., Magnani, F., Van Der Tol, C., and Markkanen, T., 2017. Modelling sun-induced fluorescence and photosynthesis with a land surface model at local and regional scales in northern Europe, Biogeosciences, 14, 1969-1987, doi:10.5194/bg-14-1969-2017.


Thum, T., Räisänen, P., Sevanto, S., Tuomi, M., Reick, C., Vesala, T., Raddatz, T., Aalto, T., Järvinen, H., Altimir, N., Pilegaard, K., Nagy, Z., Rambal, S. and Liski, J., 2011. Soil carbon model alternatives for ECHAM5/JSBACH climate model: Evaluation and impacts on Global carbon cycle estimates, Journal of Geophysical Research, 116, G02028, doi:10.1029/2010JG001612.


Tuomi, M., Thum, T., Järvinen, H., Fronzek, S., Berg, B., Harmon, M., Trofymov, J. A., Sevanto, S., and Liski, J., 2009. Leaf litter decomposition – Estimates of global variability based on Yasso07 model. Ecological Modelling 23, 3362-3371.


Vehkamäki, H., Dal Maso, M., Hussein, T., Flanagan, R., Hyvärinen, A., Lauros, J., Merikanto, J., Mönkkönen, P., Pihlatie, M., Salminen, K., Sogacheva, L., Thum, T., Ruuskanen, T. M., Keronen, P., Aalto, P. P., Hari, P., Lehtinen, K. E. J., Rannik, Ü. and Kulmala, M., 2004. Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002. Atmospheric Chemistry and Physics, 4, 2015-2023.


Walther, S., Voigt, M., Thum, T., Gonsamo, A., Zhang, Y., Köhler, P., Jung, M., Varlagin, A. and L. Guanter 2016. Satellite chlorophyll fluorescence measurements reveal large-scale decoupling of photosynthesis and greenness dynamics in boreal evergreen forests. Global Change Biology, 22, 2979–2996. doi:10.1111/gcb.13200.


Professional background

04/2017 - present PostDoc at MPI-BGC
11/2010 - 03/2017 Senior researcher at Finnish Meteorological Institute, Helsinki, Finland
02/2010 - 10/2010 PostDoc at the Laboratoire des Sciences du Climat et de l'Environnement in Gif sur Yvette, France
02/2002 - 01/2010 Researcher at Finnish Meteorological Institute, Helsinki, Finland

Educational background

02/2002 - 01/2010 PhD student of meteorology at University of Helsinki
09/1997 - 01/2002 MSc of physics at University of Helsinki


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