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snippet:	The spatial surrogate used to represent natural gas transmission distribution losses on the California Air Resources Board's 4km^2 modeling domain for the year 2025.
summary:	The spatial surrogate used to represent natural gas transmission distribution losses on the California Air Resources Board's 4km^2 modeling domain for the year 2025.
accessInformation:	, , Above Ground LNG Storage Facilities, https://hifld-geoplatform.hub.arcgis.com/datasets/e97f9385ce22445a8741ecedad1ac777_0/explore?location=36.810330%2C-118.540853%2C6.30, , Natural Gas Underground Storage, https://atlas.eia.gov/datasets/beffe709475c45909ff7423426ccb220_39/explore?location=36.868868%2C-118.489548%2C7.09, , , Natural Gas Service Area, https://cecgis-caenergy.opendata.arcgis.com/datasets/1f9fdf164c664051ac794004c4ccba8b_0/explore?location=36.712373%2C-119.273096%2C6.37, , United States Department of Transportation, Pipeline and Hazardous Materials Safety Administration (PHMSA) Gas Distribution Annual Data - 2010 to Present. (Accessed 2025-03-10). , https://www.phmsa.dot.gov/data-and-statistics/pipeline/gas-distribution-gas-gathering-gas-transmission-hazardous-liquids (GD AR 2023.csv), , Surrogate 252 Housing (CA_252_1km-1536x1596_2025_grid_weights.txt), , U.S. EPA State Inventory Tool - Emissions from Natural Gas and Oil Systems Version 2025.2, , Weight Files for Surrogate 214:, CEC California Energy Commission's Critical Infrastructure Data (2017), Natural_Gas_Pipelines.shp, Natural_Gas_Station.shp, , # this does not seem accurate when comparing with satellite imagery and the current surrogate's data. Used surrogate 214's data instead , EIA Natural Gas Interstate and Intrastate Pipelines, https://atlas.eia.gov/datasets/eia::natural-gas-interstate-and-intrastate-pipelines/explore?location=35.528122%2C-115.595375%2C6.15, , Note: , Spatial data on distribution system emissions pipelines were not found and thus not considered in this surrogate even though they are considered in the inventory emissions estimates. Emissions associated with distribution system pipeline are allocated to the features (stations, storage, transmission pipeline, and connections) that are considered in this surrogate, which doesn't seem like too bad of an assumption since the distribution pipes connect these features and will thus presumably be in proximity to them. , , # Two similar district inventory methodologies were consulted in creating this surrogate: , https://ww3.arb.ca.gov/ei/areasrc/districtmeth/ventura/NaturalGasDistribution.pdf, https://ww3.arb.ca.gov/ei/areasrc/districtmeth/sjvalley/mthd_natural_gas_transmission_losses.pdf, California Air Resources Board.
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description:	<DIV STYLE="text-align:Left;"> This surrogate is intended to allocate emissions for EIC 33031801100000 NATURAL GAS TRANSMISSION LOSSES. This EIC is for area source fugitive emissions from natural gas transmission and distribution systems. It was previously allocated with surrogate 214 Gas Distribution. Surrogate 214 only allocated to transmission pipelines and compressor stations. This update adds in allocation to housing areas which represent the service/connection portion of the emissions inventory.</DIV>
licenseInfo:	<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>None. Please reference California Air Resources Board Modeling and Meteorology Branch.</SPAN></P></DIV></DIV></DIV>
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title:	CA_215_4km-384x399_2025_Natural Gas Transmission Distribution Losses
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tags:	["Natural Gas Transmission Distribution Losses","Spatial Surrogate","4km"]
culture:	en-US
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minScale:	150000000
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