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0
1,500
–1
1,000
Gt C
ΔCO2 (p.p.m.v.)
1
–2
Emissions
Atmos
500
Land
–3
0
–2
–1
0
1
2
Ocean
Nino3 (°C)
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1900
1050
2000
2050
2100
b
290
Global
285
Land
280
275
1850
1900
1050
Year
Change in soil carbon (Gt C)
Atmospheric CO2 concentration (p.p.m.v.)
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–200
100
400
–100
1900
1050
2000
2050
2100
b
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–200
100
400
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1850
Year
1900
1050
2000
2050
2100
Year
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