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The Rock Geochemical Model (Rokgem) V0.9 : Volume 5, Issue 3 (30/07/2012)

By Colbourn, G.

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Book Id: WPLBN0004009364
Format Type: PDF Article :
File Size: Pages 76
Reproduction Date: 2015

Title: The Rock Geochemical Model (Rokgem) V0.9 : Volume 5, Issue 3 (30/07/2012)  
Author: Colbourn, G.
Volume: Vol. 5, Issue 3
Language: English
Subject: Science, Geoscientific, Model
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Ridgwell, A., Lenton, T. M., & Colbourn, G. (2012). The Rock Geochemical Model (Rokgem) V0.9 : Volume 5, Issue 3 (30/07/2012). Retrieved from

Description: School of Geographical Sciences, University of Bristol, Bristol, UK. A new model of terrestrial rock weathering – The Rock Geochemical Model (RokGeM) – is 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 runoff and temperature (GKWM; Bluth and Kump, 1994; GEM-CO2 Amiotte-Suchet et al., 2003) – fields provided by 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 short-circuited in the carbon cycle; the sensitivity and feedback strength of temperature and runoff 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.

The Rock Geochemical Model (RokGeM) v0.9

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