14. CO2 Concentration in Ice Core Samples and
CO2 Concentration in Ice Core Samples and
2
Projections for Next 100 Years 700
700
Projections for Next 100 Years Projected
Projected
Expected in 2100(2100)
(2100)
650
650
600
600
Vostok Record
Vostok Record 550
550
IPCC IS92a Scenario
IPCC IS92a Scenario
CO Concentration (ppmv)
CO22Concentration (ppmv)
Law Dome Record
Law Dome Record
500
500
Mauna Loa Record
Mauna Loa Record
450
450
400
400
2005
Current
Current
(2001)
(2001)
350
350
300
300
250
250
200
200
150
150
400,000
400,000 300,000
300,000 200,000
200,000 100,000
100,000 0
0
Years Before Present
Years Before Present
(B.P. -- 1950)
(B.P. -- 1950)