Annual bottom-up anthropogenic nitrogen oxides (NOx) emissions for northeast South Africa and for the African continent

Two bottom-up anthropogenic inventories of annual nitrogen oxides (NOx) emissions used for the manuscript submitted by Marais et al. (2025) for review in the Journal of Geophysical Research: Atmospheres. The inventories are compared to top-down estimates of NOx emissions for isolated urban and power plant hotspot emissions across Sub-Saharan Africa.The two inventories are the regional Dynamics-Aerosol-Chemistry-Cloud Interactions in West Africa (DACCIWA) inventory covering the whole African continent, and a regional regulatory inventory for northeast South Africa covering 21.38-30.69°S and 25.59-33.89°E. Emissions are for 2018 from the DACCIWA inventory, and 2019 for the northeast South Africa inventory. DACCIWA is lead developed by Sekou Keita. The regional northeast South Africa inventory data, provided by Mogesh Naidoo, is developed to support air quality regulation in the Highveld region of South Africa.The data files provided include a compressed file (dacciwa_anthro_nox_emis_by_sector_2018.tar.gz) of individual NetCDF DACCIWA sector-specific emissions of aviation, energy, flaring, manufacturing, residential, open west burning, transport, and other sector emissions on a 0.1° grid and a single NetCDF file (NESA-NOx-emissions-grid6km-2019.nc) of all NOx emissions for northeast South Africa on a 0.06° grid.本数据集包含两套自下而上的人为源年度氮氧化物（NOₓ）排放清单，用于Marais等人2025年提交至《地球物理研究杂志：大气》(Journal of Geophysical Research: Atmospheres)待审的研究手稿。本研究将这两套清单与撒哈拉以南非洲地区零散城市与电厂热点源的NOₓ排放自上而下反演估算值进行了对比。两套清单分别为覆盖整个非洲大陆的西非动力学-气溶胶-化学-云相互作用（Dynamics-Aerosol-Chemistry-Cloud Interactions in West Africa, DACCIWA）区域排放清单，以及覆盖南非东北部（纬度21.38°S~30.69°S，经度25.59°E~33.89°E）的区域监管型排放清单。DACCIWA清单的排放数据对应2018年，南非东北部清单的排放数据对应2019年。该DACCIWA清单由Sekou Keita主导开发。由Mogesh Naidoo提供的南非东北部区域监管型排放清单，专为支撑南非高地（Highveld）地区的空气质量监管工作开发。本次提供的数据文件包含一个压缩包（dacciwa_anthro_nox_emis_by_sector_2018.tar.gz），其内为分部门的DACCIWA清单NOₓ排放的网络通用数据格式（NetCDF）文件，涵盖航空、能源、火炬燃烧、制造业、民用、西非露天焚烧、交通及其他部门的排放数据，网格分辨率为0.1°；同时包含一个单独的NetCDF文件（NESA-NOx-emissions-grid6km-2019.nc），存储南非东北部区域所有NOₓ排放数据，网格分辨率为0.06°。