Pierre Friedlingstein, IPSL/LSCE, France + contributions from L. Bopp, P. Cadule, C. Jones, S. Piao, and J. Randerson Process oriented evaluation of coupled climate-carbon cycle models 2 . 6 – 4 . 1 ° C 2 . 4 – 5 . 6 ° C 7 3 0 – 1 0 0 0 p p m C 4 MIP in IPCC AR4 Climate feedback on Carbon Cycle Climate projections Friedlingstein., et al, 2006 Meehl ., et al, 2007 Atmospheric CO2 difference (ppm) Change in Land Uptake (GtC) Surface Temperature Change (K) C4MIP in CMIP5 Multiple constrains from observations Atmospheric CO 2 (trends and var.) Leaf Area Index (Greening) Ocean Carbon Inventory (trend) Air-Sea CO 2 exchange (trends and var.) C 4 MIP Umbrella • Benchmark against 20th century • Constrains on processes driving climate-carbon feedback • Reduced uncertainty on Climate-carbon cycle gain Compatible emissions Climate projections I-LAMB • Positive feedback (larger warming), but large uncertainty in simulated atmospheric CO 2 . • Essentially driven by uncertainty in carbon cycle response to climate change • At that time, no proper model evaluation C4MIP models AOGCMs C4MIP models
Pierre Friedlingstein, IPSL/LSCE, France
Jan 22, 2016
Process oriented evaluation of coupled climate-carbon cycle models. Pierre Friedlingstein, IPSL/LSCE, France + contributions from L. Bopp, P. Cadule, C. Jones, S. Piao, and J. Randerson. C 4 MIP in IPCC AR4. Climate projections. Climate feedback on Carbon Cycle. C4MIP models AOGCMs. - PowerPoint PPT Presentation
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Pierre Friedlingstein, IPSL/LSCE, France+ contributions from L. Bopp, P. Cadule, C. Jones, S. Piao, and J. Randerson
Process oriented evaluation of coupled climate-carbon cycle models
2.6 – 4.1 °C
2.4 – 5.6 °C
730 – 1000 ppm
C4MIP in IPCC AR4Climate feedback on Carbon Cycle
Climate projections
Friedlingstein., et al, 2006Meehl ., et al, 2007
Atm
osp
her
ic C
O2
dif
fere
nce
(p
pm
)
Ch
ang
e in
Lan
d U
pta
ke (
GtC
)
Surface Temperature Change (K)
C4MIP in CMIP5Multiple constrains from observations
Atmospheric CO2 (trends and var.) Leaf Area Index (Greening)
Ocean Carbon Inventory (trend) Air-Sea CO2 exchange (trends and var.)
C4MIP Umbrella
• Benchmark against 20th century• Constrains on processes driving climate-carbon feedback• Reduced uncertainty on
Climate-carbon cycle gain Compatible emissions Climate projections
I-LAMB
• Positive feedback (larger warming), but large uncertainty in simulated atmospheric CO2.• Essentially driven by uncertainty in carbon cycle response to climate change • At that time, no proper model evaluation
C4MIP modelsAOGCMs
C4MIP models
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