Articles | Volume 15, issue 20
https://doi.org/10.5194/gmd-15-7573-2022
https://doi.org/10.5194/gmd-15-7573-2022
Model evaluation paper
 | 
19 Oct 2022
Model evaluation paper |  | 19 Oct 2022

Low sensitivity of three terrestrial biosphere models to soil texture over the South American tropics

Félicien Meunier, Wim Verbruggen, Hans Verbeeck, and Marc Peaucelle

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Cited articles

Ahlström, A., Schurgers, G., Arneth, A., and Smith, B.: Robustness and uncertainty in terrestrial ecosystem carbon response to CMIP5 climate change projections, Environ. Res. Lett., 7, 044008, https://doi.org/10.1088/1748-9326/7/4/044008, 2012. 
Baker, I. T., Prihodko, L., Denning, A. S., Goulden, M., Miller, S., and da Rocha, H. R.: Seasonal drought stress in the Amazon: Reconciling models and observations, J. Geophys. Res., 113, G00B01, https://doi.org/10.1029/2007JG000644, 2008. 
Barros, A. H. C. and de Jong van Lier, Q.: Pedotransfer Functions for Brazilian Soils, in: Application of Soil Physics in Environmental Analyses: Measuring, Modelling and Data Integration, edited by: Teixeira, W. G., Ceddia, M. B., Ottoni, M. V., and Donnagema, G. K., Springer International Publishing, Cham, 131–162, https://doi.org/10.1007/978-3-319-06013-2_6, 2014. 
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Short summary
Drought stress occurs in plants when water supply (i.e. root water uptake) is lower than the water demand (i.e. atmospheric demand). It is strongly related to soil properties and expected to increase in intensity and frequency in the tropics due to climate change. In this study, we show that contrary to the expectations, state-of-the-art terrestrial biosphere models are mostly insensitive to soil texture and hence probably inadequate to reproduce in silico the plant water status in drying soils.