Non-energy GHG emissions

[calmc]

Goal is to incorporate non-energy GHG emissions into LMDI GHG composition calculations. Scope is historical emissions, as reported by EPA under the national GHG inventory.

Effort will involve collecting data and determining how to integrate emissions (and their activity data?) into the LMDI framework.

A first guess at how this might be accomplished is to go through the EPA Inventory supporting documents and pull out the most relevant, highest level data available. For example, to include methane emissions from cattle, we would take emissions factor data from Table A-158: Calculated Annual National Emission Factors for Cattle by Animal Type, for 2017 (kg CH4/head/year) and the number of head of cattle from Table A-140: Cattle Population Estimates from the CEFM Transition Matrix for 1990–2019 (1,000 head).

Other things to consider:

• [ ] Has anyone else done this sort of non-combustion emissions decomposition? If so, who?

• [ ] Look into what others have done in their GHG decompositions for non-combustion emissions 

• [ ] Find contacts at EPA to check assumptions and data?

• Sources (all data from EPA GHG inventory; individual tables are available in csvs: https://www.epa.gov/sites/production/files/2020-07/annex_1.zip)

  • Non-energy uses of fossil fuels
  • CH4 and N2O from stationary combustion
  • CH4 and N2O from mobile combustion
  • CH4 emissions from coal mining
  • Industrial processes and product use (might be some double-counting here b/c EIA counts combustion of some process fuels as energy, but EPA considers these industrial process emissions)
  • CH4, CO2, and N20 from petroleum systems
  • CH4, CO2, and N20 from natural gas systems
  • CH4, CO2, and N20 from incineration of waste
  • HFC and PFC emissions from substitution of ozone depleting substances
  • CH4 emissions from enteric fermentation
  • CH4 and N2O emissions from manure management
  • Land Use, land-use Change, and forestry

[calmc]

New to-dos: @iisabeller by 3/23:

• [ ] Create csv or yaml that maps non-combustion emissions categories (from table ES-2) to their energy sector and locations of their activity and energy data.
• [ ] Note for Colin where activity data aren't included in EPA inventory report.

@calmc by 3/26:

• [ ] Fill in location of missing activity data in file.