Input database related uncertainty of Biome-BGCMuSo agro-environmental model outputs

Gridded model assessments require at least one climatic and soil database for carrying out the simulations. There are several parallel climate development projects that provide sufficient, albeit considerably different, observation based input data crop impact studies. The related uncertainty of Biome-BGCMuSo agro-environmental outputs was investigated using three four different gridded databases, respectively covering an area nearly 100.000 km2 with 1104 grid cells. Spatial, temporal, selection variances were calculated compared obtained from 30-year-long choice introduced output variability comparable to year-to-year change weather or spatial heterogeneity causes. Input could be a decisive factor in carbon sequestration studies as stock estimates may either suggest simulated ecosystem is sink contrary source on long run. Careful evaluation quality seems inevitable highly relevant step towards more realistic plant production balance