sweetapricity/bridgedeck-aqs

该数据集是美国环保署（EPA）空气质量系统（AQS）的年度监测浓度数据，涵盖2000年至2023年，主要包含PM2.5和NO2两种污染物的监测信息。数据用于桥梁桥面恶化研究，通过聚合县级年度平均浓度，作为空气污染暴露特征。具体来说，PM2.5（细颗粒物）会促进混凝土碳化和表面退化，NO2（二氧化氮）则导致酸沉积和钢筋腐蚀。数据集来源于EPA AirData预生成文件，包含24个ZIP文件（每个年份一个），许可证为公共领域。在使用中，通过ETL脚本过滤PM2.5和NO2数据，将多个监测点数据聚合到县级年度均值，并输出为特征文件。注意，并非所有县都有监测数据，覆盖率在城镇区域较高，约50-60%的桥梁-县-年份组合有PM2.5数据，30-40%有NO2数据。Annual monitor-level concentration data for PM2.5 and NO2 from the EPA Air Quality System (AQS), covering 2000–2023. Used to derive county-level air pollution exposure features for bridge deck deterioration modeling. Air pollution accelerates concrete deterioration through PM2.5 (fine particulate matter promoting carbonation and surface degradation) and NO2 (nitrogen dioxide contributing to acid deposition and rebar corrosion). The dataset is sourced from EPA AirData pre-generated files, consisting of 24 ZIP files (one per year), and is in the public domain. In usage, an ETL script filters PM2.5 and NO2 data, aggregates multiple monitors per county to county-level annual means, and outputs feature files. Note that not all counties have monitors, with higher coverage in urban areas; approximately 50-60% of bridge-county-years have PM2.5 data, and 30-40% have NO2 data.