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PI: Veerabhadra R. Kotamarthi Argonne National Laboratory 9700 S. Cass Avenue Argonne, IL 60439 Tel: 630-252-7164 email: vrkotamarthi@anl.gov We use models -- from process-scale (zero- and one-dimensional) models of aerosol formation and removal to comprehensive three-dimensional (3-D) models of aerosol formation, transport, and removal — to analyze Atmospheric Science Program (ASP) field measurements in urban and regional-scale air masses. We focus on the production of radiatively important aerosols from chemical precursors, their spatial and temporal distributions in the planetary boundary layer, and their aging and removal. We investigate organic precursors to radiatively important aerosols, yield factors for secondary aerosol production, constraints from measured black carbon loadings on lifetimes and emissions, urban contributions to the regional aerosol background, effects of aging on aerosol radiative properties and lifetimes, and effects of precursor gases and aged aerosols on chemical compositions of cloud water and rainwater. We evaluate models of aerosol microphysics and transport for inclusion in global climate models. We analyze data from ASP field campaigns, organize data sets for use with process-scale and 3-D models, and make the data sets available to ASP investigators and others. Our analysis of ASP field data will benefit the DOE climate change initiative and foster both development of suitable aerosol process models for use in global-scale climate change models and the independent development of regionalscale climate models. [back to ASP ST Membership] |