There are three basic facts you need to know about climate change and humanity’s role in it:
1. CO2 traps heat.
2. The concentration of CO2 is rising.
3. We’ve burned 2x as many fossil fuels as needed to account for the observed rise (the rest has gone into the ocean and is causing ocean acidification).
We have known the first is true for over 150 years (since 1859), since Irish scientist John Tyndall stuck some CO2 in a tube, shone some light through it, and found that the temperature rose higher when there was more CO2 [1, 2]. The second point we’ve been seeing thanks to the direct measurements of the Keeling Curve, which now records 400 ppm of CO2 in the atmosphere, up from 317 in 1958 when measurements began [3, 4]. The third we know because of oil, coal, and gas company accountants. They record how much they sell, and if you assume all that they sell is burned (a good assumption), you end up with enough fossil CO2 in the atmosphere to double the rise we’ve seen [5, 6]. These three facts are so obvious that they were apparent as early as 1895, when Chemist Svante Arrhenius became the first to predict rising temperature due to human additions of CO2 to the atmosphere .
1. “John Tyndall (1820-1893)”. NASA Earth Observatory. Last accessed: 1/10/11. URL: http://earthobservato...
2. James Rodger Fleming (2005). Historical Perspectives on Climate Change. Oxford University Press. pp. 69–70. Available online at: http://books.google.c...
3. R. F. Keeling, S. C. Piper, A. F. Bollenbacher and S. J. Walker "Scripps CO2 Program”. Last Accessed: 5-24-13. URL: http://scrippsco2.ucs....
4. Lisa Welp and Ralph Keeling. “Now What?”. May 20, 2013. The Scripps Institution of Oceanography at UC San Diego. Last accessed: 5-24-14. URL: http://keelingcurve.u...
5. Boden, T.A., G. Marland, and R.J. Andres. 2009. Global, Regional, and National Fossil-Fuel CO2 Emissions. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001. Available online at: http://cdiac.ornl.gov....
6. Sabine CL, Feely RA, Gruber N, Key RM, Lee K, Bullister JL, Wanninkhof R, Wong CS, Wallace DWR, Tilbrook B, Millero FJ, Peng TH, Kozyr A, Ono T, Rios AF. 2004: The Oceanic Sink for Anthropogenic CO2. Science Vol. 305. pp 367-371
7. “Svante Arrhenius (1859-1927”. NASA Earth Observetory. Last accessed: 5-24-13. URL: http://earthobservato...
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