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Stephen E. Schwartz Brookhaven National Laboratory Atmospheric Sciences Division Bldg. 815E, 75 Rutherford Drive Upton, NY 11973-5000 Tel: 631-344-3100 Fax: 631-344-2887 email: ses@bnl.gov Representing the processes responsible for aerosol loading, geographical distribution, and microphysical properties in chemical transport models is essential to demonstrating understanding of these processes, to quantifying that understanding, to attributing aerosols to responsible source types, locations, and processes and, ultimately, to determining the influence of aerosols on climate and climate change. This project develops, applies, and evaluates aerosol microphysical modules based upon a variety of designs and modeling approaches. Host gridded models of varying dimensionality (1-, 2-, and 3-dimensional) are used, where appropriate, specifically, including the Community Multiscale Air Quality Modeling System for urban-to-regional scale modeling, which is well-suited for interchanging alternative modules for various processes, and the Brookhaven National Laboratory (BNL) Global Chemistry Model driven by Observation-derived meteorology (GChM-O). Novel methods are utilized to incorporate field measurements in host models. A key deliverable will be a new aerosol module for simulation of generally mixed aerosols based on the quadrature method of moments. Model application and evaluation will focus on the locations and time periods of field projects to be conducted within the United States (US) Department of Energy (DOE) Atmospheric Science Program (ASP) and rely heavily on measurements conducted in those field projects. This project supports the ASP functional category "fundamental theoretical and process modeling" and addresses, primarily, the science category "transformation of particles and gaseous precursors". Keywords: climate, aerosol, microphysics, model, forcing [back to ASP ST Membership] |