co2 | R Documentation |
Atmospheric co2 data since the Jurassic
data(co2)
Atmospheric co2 data since the Jurassic taken from Mayhew et al., (2008, 2012) and derived from the GeoCarb-III model (Berner and Kothavala, 2001). The data are eported as the ratio of the mass of co2 at time t to that at present. The format is a dataframe with the two following variables:
age
a numeric vector corresponding to the geological age, in Myrs before the present
co2
a numeric vector corresponding to the estimated co2 at that age
Mayhew, P.J., Jenkins, G.B., Benton, T.G. (2008) A long-term association between global temperature and biodiversity, origination and extinction in the fossil record Proceedings of the Royal Society B 275:47-53
Mayhew, P.J., Bell, M.A., Benton, T.G, McGowan, A.J. (2012) Biodiversity tracks temperature over time 109:15141-15145
Berner R.A., Kothavala, Z. (2001) GEOCARB III: A revised model of atmospheric CO2 over Phanerozoic time Am J Sci 301:182–204
data(co2) plot(co2)
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