Atmospheric Greenhouse Gas Abundances
Carbon Dioxide (CO2)
Long-Term Annual Means with IPCC Scenarios
Figure in PDF. Figure with IPCC 2013 comparisons in PDF. Data: CO2 (Data through 2019, Last updated 2020/03/06)
Recent Mauna Loa CO2
Figure in PDF (Data through April 2020, Last updated 2020/05/05)
Data Source: Dr. Pieter Tans, NOAA/ESRL (www.esrl.noaa.gov/gmd/ccgg/trends/) and Dr. Ralph Keeling, Scripps Institution of Oceanography (scrippsco2.ucsd.edu/)
Recent Global CO2
Figure in PDF (Data through January 2020, Last updated 2020/04/09)
Data Source: Ed Dlugokencky and Pieter Tans, NOAA/ESRL (www.esrl.noaa.gov/gmd/ccgg/trends/) and Dr. Ralph Keeling, Scripps Institution of Oceanography (scrippsco2.ucsd.edu/)
ERL (2013) Fig. 2 and PLOS ONE (2013) Fig. 6 Update
Annnual change of CO2 (globally since 1980 and at Mauna Loa before that) compared with the annual increase of the global mean surface temperature and Nino 3.4 temperature data. Figure in PDF (Data through January 2020, Last updated 2020/04/10)
"Burden" (2017) Fig. 6 Update
Left: Annnual change of CO2. Right: Correlation between the annual change of CO2 (using only global mean data) and annual change of the global mean surface temperature. Figure in PDF (Data through October 2019, Last updated 2020/01/13)
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Methane (CH4)
Long-Term Annual Means with IPCC Scenarios
Figure in PDF. Figure with IPCC 2007 and 2013 comparisons in PDF. Data: CH4 (Data through 2019, Last updated 2020/04/06)
Recent Global CH4
Figure in PDF (Data through January 2020, Last updated 2020/05/05)
Data Source: Ed Dlugokencky, NOAA/ESRL (www.esrl.noaa.gov/gmd/ccgg/trends_ch4/)
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Nitrous Oxide (N2O)
Long-Term Annual Means with IPCC Scenarios
Figure in PDF. Figure with IPCC 2007 and 2013 comparisons in PDF. Data: N2O (Data through 2019, Last updated 2019/04/23)
Recent Global N2O
Figure in PDF (Data through April 2020, Last updated 2020/04/23)
Data Source: Combined Nitrous Oxide data from
the NOAA/ESRL Global Monitoring Division. (ftp://ftp.cmdl.noaa.gov/hats/n2o/combined/GMD_global_N2O.txt)
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Other Trace Gases
mixing ratios: 1900-1990 (2016/07/02), 1992-2018 (2019/12/10), 2015-2100 (2018/03/26).
Figure in PDF. (Last modifies 2019/12/10)
forcings: 1900-1990 (2016/07/09),
1992-2018 (2019/12/10)
2015-2100 (2016/07/04).
Recent Forcing and Its Growtha
Figure in PDF (Data through 2018, Last updated 2019/12/12)
Data source: NOAA ESRL HATS Total_Cl_Br, NOAA GMD HATS SF6 pages.
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Greenhouse Gas Forcing Compared with Future Scenarios
Figure also available in PDF. Data through 2018. (Last modified: 2019/04/21)
Digital data for Scenarios A, B and C. The original figure is Fig. 2 in Hansen, Fung, Lacis, et al. 1988, "Global Climate Changes as Forecast by Goddard Institute for Space Studies Three-Dimensional Model", JGR 93, 9341-9364.* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Greenhouse Gas Forcing Growth Rates
The curves are 5-year running means with annual means for 2018 and 2019.
Figure also available in PDF.
(Last modified: 2020/04/24)