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| Keywords: Changes in radiative forcing of long-lived greenhouse gases between 1979-2012.png radiative forcing of long-lived greenhouse gases between 1979-2012 These gases are carbon dioxide CO<sub>2</sub> methane CH<sub>4</sub> nitrous oxide N<sub>2</sub>O chlorofluorocarbon-12 CFC-12 CFC-11 and fifteen other minor long-lived halogenated gases The 15 other halogenated gases are CFC-113 tetrachloromethane CCl<sub>4</sub> trichloromethane CH<sub>3</sub>CCl<sub>3</sub> ; hydrochlorofluorocarbons HCFCs 22 141b and 142b; hydrofluorocarbons HFCs 134a 152a 23 143a and 125; sulfur hexafluoride SF<sub>6</sub> and halons 1211 1301 and 2402 The graph does not include other forcings such as aerosols and changes in solar activity Summary Total forcing in 1979 was 1 712 watts per square metre W m<sup>-2</sup> and has steadily increased over time to 2 873 W m<sup>-2</sup> in 2012 Between 1979-2012 the largest contributors to radiative forcing have been CO<sub>2</sub> and CH<sub>4</sub> In 2012 the percentage contributions of each gas to total forcing was approximately CO<sub>2</sub> 64 CH<sub>4</sub> 18 N<sub>2</sub>O 6 CFC-12 6 CFC-11 2 15 minor gases 4 Forcing data are briefly summarized below All the data are available in a later section as comma-separated values The first value is the year followed by forcing values in W m<sup>-2</sup> for CO<sub>2</sub> CH<sub>4</sub> N<sub>2</sub>O CFC-12 CFC-11 the 15-minor halogenated gases and total forcing respectively 1979 1 027 0 419 0 104 0 092 0 039 0 031 1 712 1980 1 058 0 426 0 104 0 097 0 042 0 034 1 761 1990 1 293 0 472 0 129 0 154 0 065 0 065 2 178 2000 1 513 0 494 0 151 0 173 0 066 0 083 2 481 2010 1 791 0 504 0 174 0 170 0 060 0 106 2 805 2012 1 846 0 507 0 181 0 168 0 059 0 111 2 873 References citation THE NOAA ANNUAL GREENHOUSE GAS INDEX AGGI NOAA/ESRL Global Monitoring Division http //www esrl noaa gov/gmd/aggi/aggi html Butler J H and S A Montzka 1 August 2013 own Enescot 2013-08-04 Data Data are in the public-domain and are taken from the cited source Butler and Montzka 2013 These data were exported from OpenOffice org 3 4 1 Calc as comma separated values csv The following options were used Character set Western Europe 1252 Field delimiter Text delimiter Quote all text cells no Save cell content as shown yes Fixed column width no <pre> Year CO2 CH4 N2O CFC12 CFC11 15-minor Total CO2-eq ppm AGGI 1990 1 AGGI change 1979 1 027 0 419 0 104 0 092 0 039 0 031 1 712 383 0 786 1980 1 058 0 426 0 104 0 097 0 042 0 034 1 761 386 0 808 2 8 1981 1 077 0 433 0 107 0 102 0 044 0 036 1 799 389 0 826 2 2 1982 1 089 0 440 0 111 0 108 0 046 0 038 1 831 391 0 841 1 8 1983 1 115 0 443 0 113 0 113 0 048 0 041 1 873 395 0 860 2 2 1984 1 140 0 446 0 116 0 118 0 050 0 044 1 913 397 0 878 2 2 1985 1 162 0 451 0 118 0 123 0 053 0 047 1 953 401 0 897 2 1 1986 1 184 0 456 0 122 0 129 0 056 0 049 1 996 404 0 916 2 2 1987 1 211 0 460 0 120 0 135 0 059 0 053 2 039 407 0 936 2 2 1988 1 250 0 464 0 123 0 143 0 062 0 057 2 099 412 0 964 3 0 1989 1 274 0 468 0 126 0 149 0 064 0 061 2 144 415 0 984 2 1 1990 1 293 0 472 0 129 0 154 0 065 0 065 2 178 418 1 000 1 6 1991 1 313 0 476 0 131 0 158 0 067 0 069 2 213 420 1 016 1 6 1992 1 324 0 480 0 133 0 162 0 067 0 072 2 238 422 1 027 1 1 1993 1 334 0 481 0 134 0 164 0 068 0 074 2 254 424 1 035 0 7 1994 1 356 0 483 0 134 0 166 0 068 0 075 2 282 426 1 048 1 3 1995 1 383 0 485 0 136 0 168 0 067 0 077 2 317 429 1 064 1 5 1996 1 410 0 486 0 139 0 169 0 067 0 078 2 350 431 1 079 1 4 1997 1 426 0 487 0 142 0 171 0 067 0 079 2 372 433 1 089 0 9 1998 1 465 0 491 0 145 0 172 0 067 0 080 2 419 437 1 111 2 0 1999 1 495 0 494 0 148 0 173 0 066 0 082 2 458 440 1 128 1 6 2000 1 513 0 494 0 151 0 173 0 066 0 083 2 481 442 1 139 0 9 2001 1 535 0 494 0 153 0 174 0 065 0 085 2 506 444 1 150 1 0 2002 1 564 0 494 0 156 0 174 0 065 0 087 2 539 447 1 166 1 3 2003 1 601 0 496 0 158 0 174 0 064 0 088 2 580 450 1 185 1 6 2004 1 627 0 496 0 160 0 174 0 063 0 090 2 610 453 1 198 1 1 2005 1 655 0 495 0 162 0 173 0 063 0 092 2 640 455 1 212 1 2 2006 1 685 0 495 0 165 0 173 0 062 0 095 2 675 458 1 228 1 3 2007 1 710 0 498 0 167 0 172 0 062 0 097 2 706 461 1 242 1 1 2008 1 739 0 500 0 170 0 171 0 061 0 100 2 742 464 1 259 1 3 2009 1 760 0 502 0 172 0 171 0 061 0 103 2 768 466 1 271 1 0 2010 1 791 0 504 0 174 0 170 0 060 0 106 2 805 470 1 288 1 3 2011 1 818 0 505 0 178 0 169 0 060 0 109 2 838 473 1 303 1 2 2012 1 846 0 507 0 181 0 168 0 059 0 111 2 873 476 1 319 1 2 </pre> Global warming graphs Greenhouse gases Cc-zero | ||||
