An empirical framework for large-scale modeling of dissolved organic carbon fluxes across soils and water
By combining our expertise in biogeochemistry and ecosystem modelling, we will explore the previously unanswered question of how multiple factors together affect DOC on the landscape level, thus contributing to awareness of how human perturbation affects surface water browning. First, we will validate, test and redefine the parameters and assumptions related to DOC dynamics in the dynamic large-scale ecosystem model LPJ-GUESS. We will then use knowledge about hydrological connectivity to scale up the model from the local to the regional level, providing the basis for large-scale model projection of DOC fluxes in both terrestrial and aquatic systems. The Krycklan catchment, Northern Sweden, will serve as field site for evaluation of model improvement. Sample-intense DOC degradation experiments will be facilitated by a state-of-the-art field and laboratory infrastructure. Our project group represents a novel collaboration between experts in the field of DOC cycling and within large-scale ecosystem modelling.
Financed (2015-2017) by Formas.