Graven_2017 {ISRaD}

Graven dataset for delta-delta calculation

Description

Atmospheric 14C and 13C data for the period 1850-2016.

Usage

data(Graven_2017)

Format

dataframe

Details

Data from Graven et al., 2017. Annual timestep. Three zones for 14C: 1) northern hemisphere, "NHc14" > 30 deg N, 2) southern hemisphere, "SHc14" > 30 deg S, 3) tropics, "Tropicsc14" < 30 deg N & < 30 deg S. 13C data are the global annual averages.

References

Graven, H., Allison, C. E., Etheridge, D. M., Hammer, S., Keeling, R. F., Levin, I., Meijer, H. A. J., Rubino, M., Tans, P. P., Trudinger, C. M., Vaughn, B. H., and White, J. W. C.: Compiled records of carbon isotopes in atmospheric CO2 for historical simulations in CMIP6, Geosci. Model Dev., 10, 4405–4417, https://doi.org/10.5194/gmd-10-4405-2017, 2017.