RAPID: Northern California Wildfire Emissions and their Atmospheric Chemical Transformations in a Highly Populated Urban Region

这项快速研究的重点是分析2017年10月10日开始在纳帕和索诺马县燃烧的大规模野火期间收集的数据和样本。 从火灾开始收集样品约2周，通过在旧金山弗朗西斯科湾地区的主要污染事件，导致生物质燃烧排放物与城市空气污染的相互作用期间。 大火还烧毁了5000多所房屋和商业建筑，导致家庭和商业物品燃烧产生的排放通常不会在更偏远的野火中发现。这项研究预计将是巨大的公共利益，由于火灾造成刺痛眼睛和喉咙，关闭学校，并减少计划的户外活动的排放量的重点。这项工作将量化这些火灾的排放量的贡献，观察到的有机气溶胶浓度，并记录这种贡献如何随着大气老化的变化。 预计这将导致确定其他来源的有机气溶胶，包括初级和次级，可能会影响生物质燃烧排放的老化。 气体/粒子分配数据将被用来阐明二次有机气溶胶的形成机制的信息。 羽流老化过程中的观测提供的时间和化学分辨率将是调查火灾排放和转化过程的重要工具。

This RAPID research focuses on the analysis of data and samples collected during the massive wildfires burning in Napa and Sonoma Counties that began on October 10, 2017. Samples were collected from the beginning of the fires for approximately 2 weeks, through periods of major pollution episodes in the San Francisco Bay region that resulted from the interaction of biomass burning emissions with urban air pollution. The fires also burned more than 5000 homes and commercial structures, resulting in emissions from the burning of household and commercial items not typically found in emissions from more remote wildfires. This research is expected to be of great public interest due to the focus on emissions from fires that caused stinging eyes and throats, closed schools, and curtailed planned outdoor activities.This work will quantify the contribution of emissions from these fires to the observed concentrations of organic aerosol, and document how this contribution changes with atmospheric aging. It is expected to lead to the identification of additional sources contributing to organic aerosol, both primary and secondary, that may influence the aging of the biomass burning emissions. Gas/particle partitioning data will be used to elucidate information on the formation mechanisms for secondary organic aerosol. The temporal and chemical resolution provided by the observations during plume aging will be an important tool for investigating fire emission and transformation processes.