Description
Takes total global carbon emissions and projects what share of those emissions are aborbed by the biosphere and ocean and what share remain in the atmosphere.
Input variables
- Global carbon emissions
Key assumptions
The model assumes that all global emissions initially go into the atmosphere. They then are aborbed by three systems:
- biosphere
- mixed ocean layer
- deep ocean layers
Biosphere
The module's biosphere assumptions are a simplified versions of those used in the Integrated Model to Assess the Global Environment IMAGE developed by Rotmans (1990) and the earlier model developed by Goudrian and Ketner (1984).
In C-LEARN/C-ROADS, the biosphere is divided into two sub-systems, biomass and humus.
CO2 uptake by the biosphere, which occurs through plant growth and absorption into soil, is assumed to increase logarithmically with atmospheric concentrations of CO2.
For more detail on the assumptions concerning CO2 uptake by the biosphere, see C-ROADS Simulator Reference Guide pp. 49-51.
Mixed ocean layer
This module's assumptions about CO2 absorption by the mixed ocean layer are also based on the IMAGE model developed by Rotmans (1990) and the earlier model developed by Goudrian and Ketner (1984).
The ocean's capacity to absorb CO2 decreases as atmospheric concentration of CO2 rises.
For more detail on the assumptions concerning CO2 uptake by the mixed ocean layer, see C-ROADS Simulator Reference Guide pp. 51-52.
Deep ocean layers
Output variables