Towards a UK Airborne Bioaerosol Climatology: Real-Time Monitoring Strategies for High Time Resolution Bioaerosol Classification and Quantification
Towards a UK Airborne Bioaerosol Climatology: Real-Time Monitoring Strategies for High Time Resolution Bioaerosol Classification and Quantification
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DOI：
10.3390/atmos14081214
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发表时间：
2023-07
期刊：
影响因子：
2.9
通讯作者：
I. Crawford;K. Bower;D. Topping;S. Di Piazza;Dario Massabò;V. Vernocchi;M. Gallagher
中科院分区：
文献类型：
--
作者：
I. Crawford;K. Bower;D. Topping;S. Di Piazza;Dario Massabò;V. Vernocchi;M. Gallagher
生物颗粒物(BioPM)是大气气溶胶中一种不受约束的、普遍存在的、种类繁多的物质。它们通过许多机制影响气候、空气质量和健康，激发了人们对限制其排放以阐明其影响的新兴趣。为了建立评估生物PM在这些多学科领域中的作用所需的框架，有必要开发强大的、高时间分辨率的检测方法，以便能够理解和表征生物PM的排放。在这项研究中，我们展示了使用高时间分辨率实时生物气溶胶光谱仪对英国城市周边和沿海地面站点进行密集监测的环境结果。我们展示了一种新的降维驱动的BioPM分类方案的实用性，在该方案中，在Chambre设施收集的实验室样本训练数据被用于生成感兴趣的关键物种的广泛的分类学类别时间序列数据。我们展示了这些代表性班级的总体趋势，跨越2019年至2021年的春季、初夏和秋季。这项研究的一个关键结果是证明了降雨诱导的夜间类青霉气溶胶的增强，其中降雨关键只是增加了排放的数量，而不是显著影响清晨孢子释放的高峰期。
Biological particulate matter (BioPM) is a poorly constrained, ubiquitous, and diverse subset of atmospheric aerosols. They influence climate, air quality, and health via many mechanisms, spurring renewed interest in constraining their emissions to elucidate their impacts. In order to build the framework required to assess the role of BioPM in these multidisciplinary areas, it is necessary to develop robust, high time-resolution detection methodologies so that BioPM emissions can be understood and characterized. In this study, we present ambient results from intensive monitoring at UK peri-urban and coastal ground sites using high time-resolution real-time bioaerosol spectrometers. We demonstrate the utility of a new dimensional reduction-driven BioPM classification scheme, where laboratory sample training data collected at the ChAMBRe facility were used to generate broad taxonomic class time series data of key species of interest. We show the general trends of these representative classes, spanning spring, early summer, and autumn periods between 2019 and 2021. Diurnal behaviors and meteorological relationships were investigated and contextualized; a key result arising from this study was the demonstration of rainfall-induced enhancement of nighttime Penicillium-like aerosol, where rainfall crucially only acts to enhance the quantity emitted without significantly influencing the early morning timing of peak spore liberation.