The Rock Geochemical Model (RokGeM) v0.9

G. Colbourn, A. Ridgwell, T. M. Lenton
2012 Geoscientific Model Development Discussions  
A new model of terrestrial rock weatheringthe Rock Geochemical Model (RokGeM) -was developed for incorporation into the GENIE Earth System modelling framework. In this paper we describe the model. We consider a range of previously devised parameterizations, ranging from simple dependencies on global mean temperature following Berner et al. (1983) , to spatially explicit dependencies on run-off and temperature (GKWM, Bluth and Kump, 1994; GEM-CO2, Amiotte-Suchet et al., 2003) -fields provided by
more » ... the energy-moisture balance atmosphere model component in GENIE. Using long-term carbon cycle perturbation experiments, we test the effects of a wide range of model parameters, including whether or not the atmosphere was "shortcircuited" in the carbon cycle; the sensitivity and feedback strength of temperature and run-off on carbonate and silicate weathering; different river-routing schemes; 0-D (global average) vs. 2-D (spatially explicit) weathering schemes; and the lithology dependence of weathering. Included are details of how to run the model and visualize the results. Geosci. Model Dev., 6, 1543-1573, 2013
doi:10.5194/gmdd-5-2007-2012 fatcat:2qd7a4r4iveh5kppmoswroxs3u