PowerPointPrsentation

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Stabilisation of Atmospheric Concentrations.
Reductions in the human-made emissions required
to stabilise concentrations at present day
levels
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CO2 BUDGET (PgC/yr) 1990s 2090s FOSSIL
FUELS 6.3 ? 0.4 IPCC ATMOSPHERIC GROWTH 3.2
? 0.1 IPCC UPTAKE BY OCEANS 1.7 ? 0.5 ?
5 UPTAKE BY LAND 1.4 ? 0.7 ? -7 (Jones et al.,
2003)
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Climate Forces and Responses (W/m2)

• GHF 2.7
• Increased Upward IR - 1
• Ocean Heating - 0.3
• Increased Albedo Effect - 1.4 (by difference)

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