dslabs (version 0.7.1)

historic_co2: Atmospheric carbon dioxide concentration over 800,000 years

Description

Concentration of carbon dioxide in ppm by volume from direct measurements at Mauna Loa (1959-2018 CE) and indirect measurements from a series of Antarctic ice cores (approx. -800,000-2001 CE).

Usage

data(historic_co2)

Format

An object of class "data.frame".

Details

• year. Year (CE).

• co2. Carbon dioxide concentration in ppm by volume.

• source. Source of carbon dioxide measurement: direct CO2 annual mean concentrations from Mauna Loa (`Mauna Loa`) or indirect CO2 concentrations from air trapped in ice cores (`Ice Cores`).

Examples

# NOT RUN {
data(historic_co2)
head(historic_co2)
# }