Abstract
From June 1988 to May 1990, a Joint Canada-United States measurement program known as EMEFS made daily air and precipitation measurements across eastern North America. Surface data were collected by five participating networks at approximately 130 sites for use in assessing regional air pollutant and deposition model performance. This paper describes the measurement program and focuses on its associated quality assurance program. The concentration measurements were found to have overall uncertainties of ± 2.3% for SO 4 2− and NO 3 − for precipitation and, for the air concentrations, ± 6.4% for SO 2, ± 5.4% for SO 4 2−, and ± 10.3% for NO 3 −. These uncertainty levels generally satisfied the program data quality objectives for use in model evaluation studies and represent the quality of contemporary air precipitation chemistry networks.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
