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Update: NADP Atmospheric Mercury Initiative

Tim Sharac
U.S. EPA,
Clean Air Markets Division,
Washington, D.C. USA

We report on the progress made over the last 15 months to establish a North American atmospheric mercury speciation network to support dry deposition estimates, emission regulation impacts, model evaluation, and long-term trends. The scientific and coordination milestones include: atmospheric mercury expert workshop to harmonize methodologies used into a standard operating procedure; computer programming to develop a draft daily instrument QA and data reduction program; cordinating and contributing to a larger national effort to establish a multi-media mercury monitoring program; collaborating with operators of 8 established monitoring sites to generate speciated mercury data with data quality, data completeness and data submittal requirements; providing instrument technical support to collaborating site operators; completing a series of intercomparison challenges for the instruments to help establish operational QA criteria (see poster by Olson et al.,); addition of an expert atmospheric mercury instrument technician as site liaison (50%); development of a draft operating budget. In the future, work under this initiative will focus on continued development of a quality assurance program. This will include enhancing the data QA and reduction program, testing and improving the standard operating procedure and providing an approved, sustainable mechanism to post NADP atmospheric mercury speciation monitoring data on the website. We will also continue to reach out to a broad cross-section of agencies and institutions to coordinate mercury monitoring activities, building on current efforts and encouraging new collaborative partnerships.