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co2e

Curated IPCC Global Warming Potential (GWP) values, gas name standardization, and CO2-equivalent conversion for R.

Values are verified against final published IPCC source tables (AR4-AR6) rather than taken from secondary compilations. See vignette("provenance", package = "co2e") for source-by-source notes.

Installation

# install.packages("devtools")
devtools::install_github("joewcorra/co2e")

Usage

library(co2e)

# Convert a mass of gas to CO2-equivalent
as_co2e(10, gas = "HFC-134a", ar = "AR6", horizon = 100)

# Look up a GWP directly
gwp(c("CO2", "CH4", "HFC-32"), ar = "AR6", horizon = 100)

# Compare a gas's GWP across assessment reports
gwp_compare("CFC-11")

# Standardize non-canonical gas names before lookup
standardize_gas(c("HFC-134a", "Trichlorofluoromethane", "not a real gas"))

standardize_gas() matches against canonical gas IDs and documented naming variants (IUPAC/common names, per-report naming changes, and EPA/data.gov naming). Refrigerant blends and ASHRAE R-number naming (e.g. "R-134a") are not yet supported and will return "unmatched".

Scope

Single substances only — no refrigerant blends yet.
GWP values for the 20-, 100-, and 500-year time horizons across AR4, AR5, and AR6.

License

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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