Components of the climate system

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Components of the climate system
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Radiative Forcing
Energy in Energy out If energy in exceeds
energy out, then temperature will increase until
balance is restored
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www.cru.uea.ac.uk
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Temperature trends in global context
www.ipcc.ch
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www.ipcc.ch
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www.unep.org
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www.unep.org
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The Milankovitch cycles describe variations in
Earth-Sun orbital geometry
These cycles coincide with glacial interglacial
phases over the last 500,000 years
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www.ipcc.ch
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What suggests that its us?
www.ipcc.ch
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What about future climate?
SRES Special Report on Emissions Scenarios(a
range of storylines outlining possible future
conditions)
www.ipcc.ch
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Modelling future climate
www.ccc.gov.ca
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Australias future climate?
Modelled ranges of average annual warming (C)
for ca 2030 and 2070, relative to 1990
www.dar.csiro.au
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www.unep.org
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Delayed responses in the system
www.ipcc.ch
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• School of Resources, Environment Society
• http//sres.anu.edu.au

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Modes of climate change
www.ipcc.ch
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Modes of climate change
www.ipcc.ch
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www.bom.gov.au
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Summarising the evidence
www.ipcc.ch
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Summarising the evidence
www.ipcc.ch