GBD-MAPS-Global: Gridded Fractional Source Contribution Results

Overview
This dataset contains the modeled gridded fractional source contribution results for the 2021 Global Burden of Disease - Major Air Pollution Sources (GBD-MAPS) - Global study. Fractional results aggregated to the regional, national, and sub-national scales are available as Supplementary Datasets in McDuffie et al., Nature Communications, 2021. 

This GBD-MAPS-Global methodology and results are described in the following article:
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 PM_2.5 Attributable Mortality Across Multiple Spatial Scales, Nature Communications

Notes:
All results provide the modeled fractional contribution of each designated source category to total surface PM_2.5 mass and attributable disease burden. Fractional source contribution results are derived from emission sensitivity simulations using the GEOS-Chem 3D global chemical transport model (DOI: 10.5281/zenodo.4718622) and emissions from the Community Emissions Data System (GBD-MAPS update) (DOI: 10.5281/zenodo.3754964), unless otherwise noted. Results are provided at the 0.01°x0.01° (~1 km x 1 km) spatial resolution and are based on original simulations conducted at 2°x2.5° (global) and 0.5°x0.625° (Europe, North America, and Asia regions) degree resolutions. All units are in fractional percentages (e.g., 0.0245 is 2.45%). 

To calculate gridded absolute contributions of each source to PM_2.5 mass (used in the GBD-MAPS analysis):
1) Multiply the 0.01°x0.01° fractional source contributions by downscaled 0.01°x0.01° resolution PM_2.5 mass estimates, available in the DownscaledPM.zip folder as part of the GBD-MAPS-Global: Analysis Input Dataset (DOI: 10.5281/zenodo.4642700)

Data File Descriptions:
LatLon - The latitude and longitude values that correspond to each data point in the source-specific files (0.01°x0.01° resolution)

Sector Files (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 sources, 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% for each grid cell as these only include combustion sources of PM_2.5):

BIOFUEL - Solid Biofuel (or biomass) Combustion- Includes solid biofuel
COAL - Total Coal Combustion - Includes hard coal, brown coal, coal coke
OILGAS- Liquid Oil and Natural Gas Combustion - Includes light and heavy oil, diesel oil, and natural gas