Appendix H — Release notes
v2.0.0 (February 2025)
This release incorporates major changes to all sectors, including temporal data back to 2005 and fundamental changes in methodology. We also now account for industrial and agricultural emissions.
- Energy
- Electricity and natural gas data have utility report data for 2005 and 2013-2021
- Electricity and natural gas data are split into residential, commercial, and industrial per NREL modeling for all years
- Electricity and natural gas are now categories in the sectors residential, commercial, and industrial
- Electricity and natural gas data have utility report data for 2005 and 2013-2021
- Transportation
- Transportation emissions are calculated using a different method; in previous versions, we used a 100/50/50 origin-destination method. Now we are using a VMT-based method.
- Emissions estimates from previous releases should not be directly compared with this and all future releases.
- Transportation emissions are compiled from EPA data sources, including the National Emissions Inventory (NEI), EPA EQUATES, and the Air Emissions Modeling Platform.
- Bus, passenger, and commercial modes are accounted for.
- Preliminary aviation emissions accounted for.
- Transportation emissions are calculated using a different method; in previous versions, we used a 100/50/50 origin-destination method. Now we are using a VMT-based method.
- Waste
- Solid waste now follows IPCC guidelines instead of previous simplistic activity-EF model
- Solid waste emissions are apportioned to CTU by population
- Wastewater is now calculated based off county and CTU population, instead of apportioned from state totals
- Solid waste now follows IPCC guidelines instead of previous simplistic activity-EF model
- Industrial
- New sector, partially informed by previous energy work
- New emissions data from state and federal point source data includes process emissions and additional fuel combustion
- New sector, partially informed by previous energy work
- Agriculture
- New sector detailing emissions from livestock and crop production
- Data sources are USDA county agriculture censuses and EPA emission factors
- New sector detailing emissions from livestock and crop production
- Natural Systems
- Sequestration now relies entirely on USGS NLCD model (WorldCover data removed for now)
- Adds freshwater emissions data following National Hydrography Database and state emission factors
- Sequestration now relies entirely on USGS NLCD model (WorldCover data removed for now)
- Other data
- County and CTU population data back to 2005.
See full changelog in GitHub release v2.0.0
v1.1.1 (July 2024)
Minor changes across all sectors (excluding natural systems) by updating GWP values to AR6 (IPCC 2023).
Additional changes
- Some energy data processing to get back to 2005 in
_energy/data-raw/MNWI_2005_CensusCrosswalk_UtilityAllocation.R
- Text for GWP updated Section A.2
- Noted differences in LGGIT values ?sec-epa-lggit-transportation
- Re-ran transportation LGGIT comparison values. Minor change in values
- Test values updated for EPA MOVES and GWP
- Slight updates to renv package repository locations (RSPM vs. CRAN)
- Minor text update in transportation section
- Zotero and gitignore updated as needed
See full changelog in GitHub release v1.1.1
v1.1.0 (June 2024)
NEW SECTOR - Natural systems sequestration and carbon stock (Chapter 15).
Natural systems sequestration and carbon stock at county level, with particular focus on regional parks. Data sources include WorldCover and USGS NLCD. Sequestration rates and carbon stock potential come from various literature as cited. Values are correlated with county area in square kilometers.
Additional changes
- Increment release version to 1.1.0, increment date
- Updates R version to 4.4.0 and Quarto version to 1.4.533
- Update renv packages to follow R 4.4.0
- New packages FedData, terra, tidyterra, usethis, arcgislayers, dbplyr, and various sub-dependencies
- Start changelog section in appendix
- Start folder structure for agriculture sector
- Various text edits and updates, including references
See full changelog in GitHub release v1.1.0
v1.0.0 (March 2024)
Initial release supporting PCAP. Sections include
- Stationary energy (electricity, natural gas, propane and kerosene)
- Transportation (passenger, commercial)
- Waste and wastewater (solid waste, wastewater)
- Appendices with utility service area maps, low-income and disadvantaged communities (LIDAC)
See full changelog in GitHub release v1.0.0