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| Titel |
The Rock Geochemical Model (RokGeM) v0.9 |
| VerfasserIn |
G. Colbourn, A. Ridgwell, T. M. Lenton |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 6, no. 5 ; Nr. 6, no. 5 (2013-09-13), S.1543-1573 |
| Datensatznummer |
250084992
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| Publikation (Nr.) |
 copernicus.org/gmd-6-1543-2013.pdf |
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| Zusammenfassung |
| A new model of terrestrial rock weathering – the 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 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
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. |
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