Calculate baseline methane emissions from unmanaged biomass decay

Multiply biomass quantities, methane potential, anaerobic decay fractions, and monitoring duration to estimate baseline methane emissions in tCO2e.

calculate_baseline_methane_emissions_iiie(
  data,
  biomass_col = "biomass_tonnes",
  methane_potential_col = "methane_potential_m3_per_tonne",
  decay_fraction_col = "anaerobic_decay_fraction",
  days_col = "days_in_period",
  group_cols = NULL,
  output_col = "baseline_emissions_tco2e",
  methane_density_t_per_m3 = 0.00067,
  gwp_ch4 = 28
)

Arguments

data

Tibble containing baseline monitoring data.

biomass_col

Column storing biomass quantity (tonnes).

methane_potential_col

Column storing methane generation potential (m3 CH4 per tonne).

decay_fraction_col

Column storing the fraction of biomass expected to decay anaerobically.

days_col

Column storing the number of days represented by each record.

group_cols

Optional character vector specifying grouping columns.

output_col

Name of the output column with baseline emissions in tCO2e.

methane_density_t_per_m3

Density of methane in tonnes per cubic metre.

gwp_ch4

Global warming potential of methane.

Value

Tibble containing grouped baseline methane emissions.

Examples

library(tibble)
baseline <- tibble(
  plant_id = c("A", "B"),
  biomass_tonnes = c(1200, 900),
  methane_potential_m3_per_tonne = c(120, 110),
  anaerobic_decay_fraction = c(0.65, 0.55),
  days_in_period = 365
)
calculate_baseline_methane_emissions_iiie(baseline)
#> # A tibble: 1 × 1
#>   baseline_emissions_tco2e
#>                      <dbl>
#> 1                    2777.