使用众包传感器评估住宅PM2.5度和透因子的高时空分辨率,使用众包传感器
David M Lunderberg1,2, Yutong Liang1,3, Brett C Singer4
1Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720.
概括
住宅细颗粒物 (PM2.5) 水平受到户外来源,室内和其他室内活动的显著影响. 了解这些因素是改善室内空气质量和减少与PM2.5暴露相关的健康风险的关键.
科学领域:
- 环境健康科学 环境健康科学
- 大气科学 大气科学
- 公共卫生 公共卫生
背景情况:
- 住宅细颗粒物 (PM2.5) 度受到建筑条件,室外气候和人类行为的影响.
- 了解室内PM2.5的时空变化对于评估公共卫生风险至关重要.
研究的目的:
- 量化室外来源,室内排放事件和持续的室内来源对住宅PM2.5度的贡献.
- 研究气候,季节,温度和野火事件对PM2.5透和室内度的影响.
主要方法:
- 使用PurpleAir网络从美国3,977个住宅 (10分钟分辨率) 获取配对的室内和室外PM2.5测量.
- 采用时间序列分析和统计建模来分配PM2.5来源并分析透因素.
- 分析基于气候区,季节,温度差异和野火事件的数据.
主要成果:
- 户外来源对住宅PM2.5的中位数为52%,而和其他室内来源分别为28%和20%.
- 透因子在温带海洋气候和夏季更高,在冬季显著下降.
- 大量的室外室内温度差异减少了透,野火事件增加了室外和室内PM2.5贡献.
结论:
- 住宅PM2.5是室外和室内来源的复杂混合物,其中是室内主要的插曲性贡献者.
- 气候,季节和温度显著调节户外PM2.5的透,影响整体暴露.
- 野火事件加剧了室内PM2.5水平,突出了全面空气质量管理战略的需要.
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