The compact Earth system model OSCAR v2.2: description and first results
This paper provides a comprehensive description of OSCAR v2.2, a simple Earth system model. The general philosophy of development is first explained, followed by a complete description of the model's drivers and various modules. All components of the Earth system necessary to simulate future cl...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2017-01-01
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| Series: | Geoscientific Model Development |
| Online Access: | http://www.geosci-model-dev.net/10/271/2017/gmd-10-271-2017.pdf |
| Summary: | This paper provides a comprehensive description of OSCAR v2.2, a simple Earth
system model. The general philosophy of development is first explained, followed by a complete description of the model's drivers and various
modules. All components of the Earth system necessary to simulate future
climate change are represented in the model: the oceanic and terrestrial
carbon cycles – including a book-keeping module to endogenously estimate
land-use change emissions – so as to simulate the change in atmospheric
carbon dioxide; the tropospheric chemistry and the natural wetlands, to
simulate that of methane; the stratospheric chemistry, for nitrous oxide;
37 halogenated compounds; changing tropospheric and stratospheric
ozone; the direct and indirect effects of aerosols; changes in surface albedo
caused by black carbon deposition on snow and land-cover change; and the
global and regional response of climate – in terms of temperature and
precipitation – to all these climate forcers. Following the probabilistic
framework of the model, an ensemble of simulations is made over the
historical period (1750–2010). We show that the model performs well in
reproducing observed past changes in the Earth system such as increased
atmospheric concentration of greenhouse gases or increased global mean
surface temperature. |
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| ISSN: | 1991-959X 1991-9603 |