Articles | Volume 9, issue 1
Earth Syst. Sci. Data, 9, 363–387, 2017
https://doi.org/10.5194/essd-9-363-2017

Special issue: Paleoclimate data synthesis and analysis of associated uncertainty...

Earth Syst. Sci. Data, 9, 363–387, 2017
https://doi.org/10.5194/essd-9-363-2017

  20 Jun 2017

20 Jun 2017

A 156 kyr smoothed history of the atmospheric greenhouse gases CO2, CH4, and N2O and their radiative forcing

Peter Köhler et al.

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Short summary
We document our best available data compilation of published ice core records of the greenhouse gases CO2, CH4, and N2O and recent measurements on firn air and atmospheric samples covering the time window from 156 000 years BP to the beginning of the year 2016 CE. A smoothing spline method is applied to translate the discrete and irregularly spaced data points into continuous time series. The radiative forcing for each greenhouse gas is computed using well-established, simple formulations.