评估低成本空气质量监测器识别尼加拉瓜Masaya火山下风处火山SO2和PM的有效性

IF 2.5 Q2 Earth and Planetary Sciences
Volcanica Pub Date : 2022-02-03 DOI:10.30909/vol.05.01.3359
Rachel C. W. Whitty, M. Pfeffer, E. Ilyinskaya, T. Roberts, A. Schmidt, S. Barsotti, W. Strauch, L. Crilley, F. Pope, Harold Bellanger, Elvis Mendoza, T. Mather, E. Liu, N. Peters, Isabelle A. Taylor, H. Francis, Xochilt Hernández Leiva, David Lynch, Sebastien Norbert, Peter Baxter
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引用次数: 1

摘要

尼加拉瓜马萨亚火山的气体和颗粒物排放造成了严重的区域火山空气污染。我们评估了低成本SO2和PM传感器在连续空气质量网络中的适用性。该网络在五个人口稠密地区(距离火山口4-16公里)部署了六个月。SO2传感器多次出现故障并记录错误值,可能是由于腐蚀造成的,需要大量维护。PM传感器被发现是稳健的,但数据需要对湿度进行校正。SO2测量不能作为单独的工具来检测VAP发作(VAPE)的发生,但正如气象预报和卫星图像所证实的那样,SO2/PM相关性在近场站可靠地实现了这一点。在近场和远场站,高于背景的PM浓度可靠地确定了VAPE。我们建议,可以将低成本的PM和SO2传感器与更多数量的仅PM传感器相结合,构建一个连续的网络。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessing the effectiveness of low-cost air quality monitors for identifying volcanic SO2 and PM downwind from Masaya volcano, Nicaragua
Gas and particulate matter (PM) emissions from Masaya volcano, Nicaragua, cause substantial regional volcanic air pollution (VAP). We evaluate the suitability of low-cost SO2 and PM sensors for a continuous air-quality network. The network was deployed for six months in five populated areas (4–16 km from crater). The SO2 sensors failed and recorded erroneous values on multiple occasions, likely due to corrosion, requiring significant maintenance commitment. The PM sensors were found to be robust but data required correction for humidity. SO2 measurements could not be used as stand-alone tools to detect occurrence of VAP episodes (VAPE), but an SO2/PM correlation reliably achieved this at near-field stations, as confirmed by meteorological forecasts and satellite imagery. Above-background PM concentrations reliably identified VAPE at both near-field and far-field stations. We suggest that a continuous network can be built from a combination of low-cost PM and SO2 sensors with a greater number of PM-only sensors.
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来源期刊
Volcanica
Volcanica Earth and Planetary Sciences-Geology
CiteScore
4.40
自引率
0.00%
发文量
21
审稿时长
21 weeks
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