Home History of the model The development of MONICA

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Asseng et al. (2015): 
Rising heat reduces global wheat production. Nature Climate Change 5 (2), 143–147.

 


The development of MONICA PDF Print E-mail

MONICA is a successor of the the HERMES model. HERMES is a pure nitrogen model. It had to be modified to also support research questions on carbon dynamics under climate change. The simple algorithm for the calculation of nitrogen mineralisation from soil organic matter was replaced by a more comprehensive one, which was taken from the Danish DAISY model. It calculates the carbon turn-over and derives nitrogen dynamics from it. This approach also considers soil microbial biomass dynamics. Furthermore, the impact of atmospheric CO2 concentration on the crop’s photosynthesis and transpiration was introduced.

Using these algorithms, the increased photosynthesis and the improved water used efficiency of crops grown under elevated CO2 concentrations can be simulated according to observations made from free air carbon enrichment experiments. Finally the new model, which was given the name MONICA, was equipped with automatically triggered fertilising and irrigation routines. They enable MONICA to run in long-term scenarios without having to adjust the virtual crop’s management to gradually changing conditions.

Last Updated on Thursday, 23 February 2012 07:28