README
Author: E. McDuffie
Last Updated: May 10, 2021

Gridded Fractional Source Contribution Results README file

This dataset accompanies the results in the following manuscript:
McDuffie, E. E., Martin, R. V., Spadaro, J. V., Burnett, R., Smith, S. J., O'Rourke, P., Hammer, M., van Donkelaar, A., Bindle, L., Shah, V., Jaegle, L., Luo, G., Yu, F., Adeniran, J., Lin, J., Brauer, M. Source Sector and Fuel Contributions to Ambient PM2.5 Attributable Mortality Across Multiple Spatial Scales, Nature Communications, 2021

Data Details:
All results provide the fractional contribution of each designated source category to total surface PM2.5 mass and attributable disease burden. 

Units: all units are in fractional percentages (e.g., 0.0245 is 2.45%) 

Resolution: All results are provided at 0.01 x 0.01 degree (~1 km x 1 km) resolution. 

Results are derived from zero-out source sensitivity simulations using the GEOS-Chem v12.1 (updated; https://zenodo.org/record/4718622) 3D global chemical transport model. All emissions are from the CEDS_GBD-MAPS database (https://zenodo.org/record/3754964), unless otherwise noted. 

Source simulation details: 
Source Sectors (sum to 100%): 
AFCID - Anthropogenic Fugitive, Combustion, and Industrial Dust
AGR - Agriculture - includes manure management, soil fertilizer emissions, rice cultivation, enteric fermentation, and other agriculture
ENEcoal - Energy Production (coal combustion only) - Includes electricity and heat production, fuel production and transformation, oil and gas fugitive/flaring, and fossil fuel fires
ENEother - Energy Production (all non-coal combustion) - Includes electricity and heat production, fuel production and transformation, oil and gas fugitive/flaring, and fossil fuel fires
GFEDagburn - Agricultural Waste Burning - Includes solid waste disposal, waste incineration, waste-water handling, and other waste handling (from the GFED fires inventory)
GFEDoburn - Other Open Fires - Includes deforestation, boreal forest, peat, savannah, and temperate forest fires (from the GFED fires inventory) 
INDcoal - Industry (coal combustion only) - Includes Industrial combustion (iron and steel, non-ferrous metals, chemicals, pulp and paper, food and tobacco, non-metallic minerals, construction, transportation equipment, machinery, mining and quarrying, wood products, textile and leather, and other industry combustion) and non-combustion industrial processes and product use (cement production, lime production, other minerals, chemical industry, metal production, food, beverage, wood, pulp, and paper, and other non-combustion industrial emissions)
INDother - Industry (all non-coal combustion) - Includes Industrial combustion (iron and steel, non-ferrous metals, chemicals, pulp and paper, food and tobacco, non-metallic minerals, construction, transportation equipment, machinery, mining and quarrying, wood products, textile and leather, and other industry combustion) and non-combustion industrial processes and product use (cement production, lime production, other minerals, chemical industry, metal production, food, beverage, wood, pulp, and paper, and other non-combustion industrial emissions)
NRTR - non-road/ off-road transportation - Includes Rail, Domestic navigation, Other transportation
OTHER - all remaining source sectors, including: volcanic SO2, lightning NOx, biogenic soil NO, ocean emissions, biogenic emissions, very short lived iodine and bromine species, decaying plants (misc. inventories)
RCOC - Commercial Combustion - Includes commercial and institutional combustion
RCOO - Other Combustion - Includes combustion from agriculture, forestry, and fishing
RCORbiofuel - Residential combustion (solid biofuel combustion only) - includes residential heating and cooking
RCORcoal - Residential combustion (coal combustion only) - includes residential heating and cooking
RCORother - Residential Combustion (all non-coal and non-solid biofuel) - includes residential heating and cooking
ROAD - Road Transportation - includes cars, motorcycles, heavy and light duty trucks and buses
SHP - International Shipping - Includes international shipping and tanker loading
SLV - Solvents - Includes solvents production and application (degreasing and cleaning, paint application, chemical products manufacturing and processing, and other product use)
WDUST - Windblown Dust - (from the DEAD dust model)
WST - Waste - Includes solid waste disposal, waste incineration, waste-water handling, and other waste handling

Fuel Categories (do not sum to 100% because these only account for fuel combustion PM2.5 sources):
BIOFUEL - Solid Biofuel (or biomass)- Includes solid biofuel
COAL - Total Coal - Includes hard coal, brown coal, coal coke
OILGAS - Liquid Oil and Natural Gas - Includes light and heavy oil, diesel oil, and natural gas