ppm/yr year

Annual increases in atmospheric

carbon dioxide

 

1.67 1980
1980-2005
1.08 1981
0.99 1982

 

 

 

 

 

1.83 1983
1.32 1984
1.6 1985
1.02 1986
2.71 1987
2.24 1988
1.37 1989
1.26 1990
0.82 1991
0.64 1992
1.13 1993
1.62 1994
2.04 1995
1.09 1996
1.96 1997
2.91 1998
1.38 1999
1.24 2000
1.87 2001
2.35 2002
2.22 2003
1.63 2004
2.52 2005
42.51 1.635
twenty five year average
1.635 ppm.

Frequently Asked Questions

Hansen's 2006 Warnings

Direct CO2 impacts

return to writing

 

links