Delphine Deryng (ZALF/Humboldt University of Berlin)


Model category CSM
Plant part Shoot
Scale Whole_plant, Field
Licence upon_request
Operating system Any
Programming language Fortran
Format of model inputs and outputs netcdf
Species studied Maize, Soybean, Wheat, Generic-crops
Execution environment Terminal

Scientific article

Simulating the effects of climate and agricultural management practices on global crop yield
D. Deryng,W. J. Sacks,C. C. Barford,N. Ramankutty
Global Biogeochemical Cycles, 2011 View paper

Model description

PEGASUS (Predicting Ecosystem Goods And Services Using Scenarios) is a state-of-the-art global ecosystem model originally developed to simulate net primary productivity and global runoff from natural vegetation, and further developed to represent growth and management of single crops (Deryng et al., 2011). PEGASUS combines a radiation-use efficiency model to estimate daily photosynthesis and annual net primary production with a surface energy and soil water budget model. Daily biomass production is dynamically allocated to the different organs of the crop and yield is estimated from the storage organ pool. PEGASUS also represents the effects of extreme heat stress around crop anthesis and elevated atmospheric CO2 concentration (Deryng et al., 2014) and have been run for numerous modelling intercomparison initiatives (e.g., Deryng et al., 2016; Rosenzweig et al., 2014; Bassu et al., 2014; Durand et al., 2017; Schauberger et al., 2017; Schleussner et al., 2018; Kimball et al., 2019).

Some case studies

Climate risks assessments: impacts and adaptation