Greenhouse Gas Concentrations

For figures of monthly CO2 concentration and airborne fraction, go to the "Storms" book updated figures page.

Figures in PDF
CO2 (2016/02/08)
CH4 (2014/11/07)
N2O (2015/02/07)
other trace gases (2014/11/23)

Data
CO2 (2017/03/07)
CH4 (2017/03/26)
N2O (2017/03/26)
Other Trace Gases
...mixing ratios: 1900-1990 (2016/07/02), 1992-2016 (2017/03/29), 2015-2100 (2016/07/03).
...forcings: 1900-1990 (2016/07/09), 1992-2016 (2017/03/30), 2015-2100 (2016/07/04).

Recent data source
CO2: NOAA ESRL CCGG page.
CH4: NOAA ESRL Global Monitoring Division page.
N2O: NOAA ESRL HATS N2O page.
Other Trace Gases: NOAA ESRL HATS Total_Cl_Br, NOAA GMD HATS SF6 pages.

Greenhouse Gas Forcing Compared with Future Scenarios

Figure also available in PDF. Data through 2016. (Last modified: 2017/04/29)

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 3-year running mean for 2015.
Figure also available in PDF. (Last modified: 2017/04/04)

The original figure is Fig. 4 in Hansen and Sato 2004, "Greenhouse gas growth rates" PNAS 101, 16109-16114.