Investigation of CO2 Variation and Mapping Through Wearable Sensing Techniques for Measuring Pedestrians' Exposure in Urban Areas
Investigation of CO2 Variation and Mapping Through Wearable Sensing Techniques for Measuring Pedestrians' Exposure in Urban Areas
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DOI：
10.3390/su12093936
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发表时间：
2020-05-01
期刊：
影响因子：
3.9
通讯作者：
Pisello, Anna Laura
中科院分区：
文献类型：
--
作者：
Pigliautile, Ilaria;Marseglia, Guido;Pisello, Anna Laura
由于城市地区人类活动集中和土地覆盖/地表改变，空气质量差和局部过热主要威胁到公民的福祉。城市地区独特的形态和新陈代谢导致了众所周知的城市热岛效应，其特点是城市的空气温度高于其周围地区。在行人高度的城市户外环境测绘可能是一个关键工具，以确定人类在空气质量差的暴露和热舒适方面的风险区域。本研究提出透过穿戴式小型气象站进行城市环境调查，以市民的角度来了解关键参数的空间分布。该创新系统可监测和跟踪二氧化碳（CO2）浓度的现场值，例如空气温度和风速值，这些值已被证明与户外健康有关。所介绍的监测活动侧重于罗马（意大利）工作日和周末交通高峰期的一条双向双车道公路。收集到的数据进行了分析，就时间和位置，并可能在不同的变量之间的相关性进行了检查。结果表明，可穿戴系统的能力，以捕捉的CO2浓度和局部过热，由于城市结构，在市民的参与作为观测向量，以广泛监测城市环境质量的潜力。
Citizens' wellbeing is mainly threatened by poor air quality and local overheating due to human-activity concentration and land-cover/surface modification in urban areas. Peculiar morphology and metabolism of urban areas lead to the well-known urban-heat-island effect, characterized by higher air temperature in cities than in their surroundings. The environmental mapping of the urban outdoors at the pedestrian height could be a key tool to identify risky areas for humans in terms of both poor-air-quality exposure and thermal comfort. This study proposes urban environment investigation through a wearable miniaturized weather station to get the spatial distribution of key parameters according to the citizens' perspective. The innovative system monitors and traces the field values of carbon dioxide (CO2) concentration, such as air temperature and wind-speed values, which have been demonstrated to be related to outdoor wellbeing. The presented monitoring campaign focused on a two-way, two-lane road in Rome (Italy) during traffic rush hours on both working days and weekends. Collected data were analyzed with respect to timing and position, and possible correlations among different variables were examined. Results demonstrated the wearable system capability to catch pedestrian-exposure variability in terms of CO2 concentration and local overheating due to urban structure, highlighting potentials in the citizens' involvement as observation vectors to extensively monitor urban environmental quality.