reportFireEmissions.R — reportFireEmissions • magpie4

reads land cover data and deforestation data to produce future estimates of fire emissions based on extrapolating GFED4.1s data from 2003-2016. Emissions are area x rho x emission factor, where rho (inst/extdata/GFED_regional_dm_rho_scaled.csv) is the regional GFED dry-matter mass of a fire type per m2 of the historical area of the class it is applied to; see the provenance file beside it. The run's areas: forest (primforest + secdforest + forestry) for boreal, temperate, small deforestation and peat fires; past + other for savanna and grassland fires; crop for agricultural fires (not reported); for large deforestation fires, the natural-forest reduction without timber harvest (primary and secondary forest reduction minus their harvested area, which regrows) plus the secondary-forest disturbance loss (shifting agriculture), per year. Fire CO2 is gross: deforestation fire CO2 overlaps with MAgPIE's land-use change CO2, and savanna and forest fire CO2 is largely balanced by regrowth. Peat fire CO2 does not overlap (MAgPIE's peat CO2 uses the IPCC Wetlands Supplement factors for drained soils, which exclude fire). Do not add fire CO2 to land-use change CO2.

Usage

reportFireEmissions(gdx, level = "reg")

Arguments

gdx: GDX file
level: Level of regional aggregation; "reg" (regional), "glo" (global), "regglo" (regional and global)

Value

emissions as MAgPIE object (unit: Mt X/yr, plus cumulative Mt X/yr)

Fire emission variables

Reported for X = BC, CO, CO2, NO2, OC, SO2, N2O, CH4, NH3 and VOC. NO2 is NOx reported as mass of NO2 (GFED gives NOx as mass of NO; converted by 46/30).

Name	Unit	Meta
Emissions\|X\|AFOLU\|Land\|Fires	Mt X/yr	Total X emissions from fires
Emissions\|X\|AFOLU\|Land\|Fires\|+\|Forest Burning	Mt X/yr	X from forest fires
Emissions\|X\|AFOLU\|Land\|Fires\|Forest Burning\|+\|Boreal Forest	Mt X/yr	X from boreal
forest fires
Emissions\|X\|AFOLU\|Land\|Fires\|Forest Burning\|+\|Temperate Forest	Mt X/yr	X from temperate
forest fires
Emissions\|X\|AFOLU\|Land\|Fires\|Forest Burning\|+\|Tropical Forest	Mt X/yr	X from tropical
deforestation fires
Emissions\|X\|AFOLU\|Land\|Fires\|+\|Grassland Burning	Mt X/yr	X from grassland/savanna
fires
Emissions\|X\|AFOLU\|Land\|Fires\|+\|Peat Burning	Mt X/yr	X from peat fires

Author

Michael Crawford

Examples

  if (FALSE) { # \dontrun{
    x <- reportFireEmissions(gdx, level = "glo")
  } # }