The implication of input data aggregation on up-scaling soil organic carbon changes
Résumé
In up-scaling studies, model input data aggregation is a common method to cope with deficient data availability and limit the computational effort. We analyzed model errors due to soil data aggregation for modeled SOC trends. For a region in North West Germany, gridded soil data of spatial resolutions between 1 km and 100 km has been derived by majority selection. This data was used to simulate changes in SOC for a period of 30 years by 7 biogeochemical models. Soil data aggregation strongly affected modeled SOC trends. Prediction errors of simulated SOC changes decreased with increasing spatial resolution of model output. Output data aggregation only marginally reduced differences of model outputs between models indicating that errors caused by deficient model structure are likely to persist even if requirements on the spatial resolution of model outputs are low.
Auteurs, date et publication :
Auteurs Balázs Grosz , Rene Dechow , Sören Gebbert , Holger Hoffmann , Gang Zhao , Julie Constantin , Helene Raynal , Daniel Wallach , Elsa Coucheney , Elisabet Lewan , Henrik Eckersten , Xenia Specka , Kurt-Christian Kersebaum , Claas Nendel , Matthias Kuhnert , Jagadeesh Yeluripati , Edwin Haas , Edmar Teixeira , Marco Bindi , Giacomo Trombi
Publication : Environmental Modelling & Software
Date : 2017
Volume : 96
Pages : 361-377