Inter-comparison of measurements of inorganic chemical components in precipitation from NADP and CAPMoN at collocated sites in the USA and Canada during 1986–2019

作者：Jian Feng, Amanda Cole, Gregory A. Wetherbee, Kulbir Banwait · 发表于：Environmental Monitoring and Assessment · 年份：2023 · DOI：10.1007/s10661-023-11771-z · 被引用次数：4 · 研究领域：Atmospheric chemistry and aerosols、Atmospheric and Environmental Gas Dynamics、Air Quality and Health Impacts

Abstract Wet deposition monitoring is a critical part of the long-term monitoring of acid deposition, which aims to assess the ecological impact of anthropogenic emissions of SO 2 and NO x . In North America, long-term wet deposition has been monitored through two national networks: the Canadian Air and Precipitation Monitoring Network (CAPMoN) and the US National Atmospheric Deposition Program (NADP), for Canada and the USA, respectively. In order to assess the comparability of measurements from the two networks, collocated measurements have been made at two sites, one in each country, since 1986 (Sirois et al., in Environmental Monitoring and Assessment, 62 , 273–303, 2000; Wetherbee et al., in Environmental Monitoring and Assessment , 1995–2004, 2010). In this study, we compared the measurements from NADP and CAPMoN instrumentation at the collocated sites at the Pennsylvania State University (Penn State), USA, from 1989 to 2016, and Frelighsburg, Quebec, Canada, from 2002 to 2019. We also included in the study the collocated daily-vs-weekly measurements by the CAPMoN network during 1999–2001 and 2016–2017 in order to evaluate the differences in wet concentration of ions due to sampling frequency alone. The study serves as an extension to two previous CAPMoN-NADP inter-comparisons by Sirois et al. ( Environmental Monitoring and Assessment, 62 , 273–303, 2000) and Wetherbee et al., in ( Environmental Monitoring and Assessment , 1995–2004, 2010). At the Penn State University ...