CyanoHABs and CAPs: assessing community-based monitoring of PM2.5 with regional sources of pollution in rural, northeastern North Carolina.

IF 2.8 Q3 ENVIRONMENTAL SCIENCES
Haley E Plaas, Colleen Karl, Rachael Cogbill, Nicole Rosales-Garcia, Ashley H Stoop, Lisa L Satterwhite, Martine E Mathieu-Campbell, Jennifer Richmond-Bryant, Hans W Paerl, Douglas S Hamilton
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Abstract

Underserved rural communities in northeastern North Carolina (NC), surrounding the Albemarle Sound, have faced degraded environmental quality from various sources of air and water pollution. However, access to local air quality data is regionally scarce due to a lack of state-run monitoring stations, which has motivated local community science efforts. In January 2022, we co-developed a community-led study to investigate the relationship between fine particulate matter (PM2.5) and sources of regional air pollution, with a specific focus on previously identified emissions from cyanobacterial harmful algal blooms (CyanoHABs). Using low-cost PurpleAir air quality sensors to quantify PM2.5 mass, satellite-derived indicators of CyanoHABs, and other publicly available atmospheric and meteorological data, we assessed environmental drivers of PM2.5 mass in the airshed of the Albemarle Sound estuary during 2022-2023. We found that bias-corrected PurpleAir PM2.5 mass concentrations aligned with composite data from the three nearest federal reference equivalent measurements within 1 μg m-3 on average, and that the temporal variation in PM2.5 was most closely associated with changes in criteria air pollutants. Ultimately, satellite-based indicators of CyanoHABs (Microcystis spp. equivalent cell counts and bloom spatial extent) were not strongly associated with ambient/episodic increases in PurpleAir PM2.5 mass during our study period. For the first time, we provide local PM2.5 measurements to rural communities in northeastern NC with an assessment of environmental drivers of PM2.5 pollution events. Additional compositional analyses of PM2.5 are warranted to further inform respiratory risk assessments for this region of NC. Despite the lack of correlation between CyanoHABs and PM2.5 observed, this work serves to inform future studies that seek to employ widely available and low-cost approaches to monitor both CyanoHAB aerosol emissions and general air quality in rural coastal regions at high spatial and temporal resolutions.

蓝藻有害藻华和cap:评估北卡罗莱纳州东北部农村地区污染源对PM2.5的社区监测。
北卡罗莱纳东北部阿尔伯马尔湾周围的农村社区,由于各种来源的空气和水污染,面临着环境质量下降的问题。然而,由于缺乏国有监测站,获得当地空气质量数据的途径在区域内是稀缺的,这激励了当地社区的科学努力。2022年1月,我们共同开展了一项社区主导的研究,调查细颗粒物(PM2.5)与区域空气污染源之间的关系,特别关注先前确定的蓝藻有害藻华(CyanoHABs)的排放。利用低成本的PurpleAir空气质量传感器量化PM2.5质量、卫星衍生的蓝藻华指标以及其他可公开获得的大气和气象数据,评估了2022-2023年Albemarle Sound河口大气区PM2.5质量的环境驱动因素。我们发现,经过偏倚校正的PurpleAir PM2.5质量浓度与3个最近的联邦参考当量测量数据的复合数据一致,平均值在1 μg m-3以内,PM2.5的时间变化与标准空气污染物的变化关系最为密切。最终,在我们的研究期间,基于卫星的藻华指标(微囊藻属的等效细胞计数和水华空间范围)与紫色空气PM2.5质量的环境/偶发性增加没有很强的相关性。我们首次为北卡东北部农村社区提供了当地PM2.5测量数据,并评估了PM2.5污染事件的环境驱动因素。有必要对PM2.5进行进一步的成分分析,以进一步为该地区的呼吸风险评估提供信息。尽管观察到的蓝藻有害藻与PM2.5之间缺乏相关性,但这项工作为未来的研究提供了信息,这些研究将寻求采用广泛可用的低成本方法,以高时空分辨率监测沿海农村地区蓝藻有害藻气溶胶排放和总体空气质量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
2.90
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0.00%
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