Breathe London Mobile Monitoring

Two Google Street View cars, equipped with reference-type air quality monitors, are measuring air pollution over approximately 600 eight-hour shifts between autumn 2018 and autumn 2019. The cars use fast-response, research-grade instruments to precisely measure pollution concentrations approximately every 1-10 seconds. Pollutants measured include black carbon (BC), CO₂, NO, NO₂, O3, PM2.5 (and other PM size ranges) on a variety of London roadways. The National Physical Laboratory is responsible for regular checks of instrument performance and periodic calibrations.

The cars are collecting data from early morning to late evening, Monday to Friday – providing a representative view of on-road air pollution during these hours. The mobile monitoring routes are sampled at different times of day, days of week and time of year – with a target of achieving a minimum of approximately 15 passes of each route over the course of the study (however, traffic congestion and other factors may reduce this number).

More information can be found on the [Breathe London website](https://www.breathelondon.org/).

两辆配备参考型空气质量监测仪的谷歌街景汽车，于2018年秋季至2019年秋季期间，在约600个八小时班次中测量了空气污染情况。这些汽车利用快速响应的研究级仪器，大约每1-10秒精确测量一次污染浓度。测量的污染物包括黑碳（BC）、二氧化碳（CO₂）、一氧化氮（NO）、二氧化氮（NO₂）、臭氧（O3）、PM2.5（及其他PM尺寸范围）等多种伦敦道路上的污染物。国家物理实验室负责对仪器性能进行定期检查和周期性校准。汽车于周一至周五的早晚时段收集数据，提供这些时间段内道路空气污染的代表性视图。移动监测路线在不同时间、不同工作日和不同年份进行采样，目标是在研究期间至少完成每条路线约15次通行（然而，交通拥堵和其他因素可能会减少这一数量）。更多详细信息可在[Breathe London网站](https://www.breathelondon.org/)找到。