Vulcan v4-Onroad (DARTE grid)

Vulcan v4.0–Onroad (DARTE grid) provides annual estimates of onroad FFCO2 (fossil fuel CO2) emissions across U.S. road segments from 2010 to 2017 at a spatial resolution of 1km2. These estimates are based on county-level FFCO2 emissions data obtained from the 2014 and 2017 National Emissions Inventory (NEI). The NEI tracks onroad emissions by U.S. county, distinguishing among 13 vehicle types (which include various vehicle classes and fuel types) and five road types (including parking), as well as differentiating between urban and rural roads. The county level FFCO2 emissions data is scaled temporally from 2010-2022 (the entire range of Vulcan v4). The emissions are then allocated to all motorable road segments across the U.S. Finally, the native resolution data is gridded at 1km2 using the DARTE fishnet (grid descriptors). For further details see the data description document. Note: version 1.1 includes the correct data descrioption (no changes to the data files)Vulcan v4.0–路面交通（Onroad，DARTE网格）数据集提供了2010年至2017年间美国全域道路路段的路面交通化石燃料二氧化碳（FFCO2，即fossil fuel CO2）排放年度估算值，空间分辨率达1平方千米。 该估算数据基于2014年与2017年国家排放清单（National Emissions Inventory，简称NEI）所提供的县级化石燃料二氧化碳排放数据。 NEI以美国县级行政单元为单位统计路面交通排放，区分13种车辆类型（涵盖各类车辆类别与燃料类型）及5种道路类型（包含停车场），同时还可区分城市道路与乡村道路。 研究人员对县级化石燃料二氧化碳排放数据进行时间尺度适配，使其覆盖Vulcan v4的完整时间跨度——2010年至2022年。 随后将排放总量分配至美国全域所有可通行道路路段。 最终，借助DARTE渔网格网（网格描述符）将原始分辨率数据网格化至1平方千米尺度。 如需进一步了解详情，请参阅数据集说明文档。 注：1.1版本包含正确的数据集说明文本（数据文件未作任何修改）