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THE NORTH AMERICAN MERCURY MODEL INTER-COMPARISON STUDY (NAMMIS)
Citation:
BULLOCK, R., D. ATKINSON, T. BRAVERMAN, A. DASTOOR, D. DAVIGNON, N. ECKLEY-SELIN, D. JACOB, K. LOHMAN, C. SEIGNEUR, K. VIJAYARAGHAVAN, T. MYERS, K. CIVEROLO, AND C. HOGREFE. THE NORTH AMERICAN MERCURY MODEL INTER-COMPARISON STUDY (NAMMIS). Presented at 28th NATO/CCMS International Technical Meeting, Leipzig, GERMANY, May 15 - 19, 2006.
Impact/Purpose:
The objectives of this task are to continue development and improvement of EPA's mesoscale (regional through urban scale) air quality modeling systems, such as the Community Multiscale Air Quality (CMAQ) model, as air quality management and NAAQS implementation tools. This task focuses on needed research and development of air quality models targeted for a major CMAQ model release in FY08. Model development for a broad scope of application is envisioned. For example, CMAQ will need to be able to simulate air quality feedbacks to meteorology and climate as well as intercontinental transport. The 2008 release of CMAQ is timed to coincide with EPA/OAR's and the states' needs for an improved model for assessments of progress (mid-course corrections) in the post-SIP submittal timeframe.
Description:
This paper describes the North American Mercury Model Inter-comparison Study (NAMMIS). The NAMMIS is an effort to apply atmospheric Hg models in a tightly constrained testing environment with a focus on North America. With each model using the same input data sets for initial conditions, meteorology, emissions and boundary values, and with each model applied to the same horizontal modeling domain, the separate effects of input data and scientific process treatments of each model can be better understood and guidance can be provided to the research community regarding which scientific process uncertainties are contributing most to observed discrepancies in model simulations of Hg deposition.