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Richard L. Coulter Argonne National Laboratory 9700 S. Cass Avenue Argonne, IL 60439 Tel: 630-252-5833 Fax: 630-252-5498 email: rlcoulter@anl.gov We support Atmospheric Science Program (ASP) field studies of the radiative effects of aerosols and their life cycles (1) by deploying instrumentation during intensive field campaigns to determine the basic chemical state of the atmosphere and the vertical and horizontal physical structure of the planetary boundary layer and (2) by measuring near-surface meteorological parameters such as wind, temperature, and aerosol fields to approximately 20 km above the surface and generating data necessary to estimate boundary layer heights in real time (or near real time). Ground-based instrumented sites use surface towers, radar wind profilers-radio acoustic sounding systems, sodars, lidars, and balloon-borne instruments. Basic chemical measurements made in the field include carbon monoxide, ozone, and aerosol loadings. The organic molecular constituents of aerosols can be measured at Argonne with a mass spectrometer. We are deploying a multifilter rotating shadowband radiometer and other radiometers to determine photolytic radiation fields and aerosol column densities during daytime hours, with a mobile facility housing the needed electronics and instrumentation. The data we gather are made available to the ASP Science Team and the wider community. Our efforts are coordinated with other ASP efforts. Key Words: aerosols, aerosol field studies, aerosol optical depths, atmospheric characterization, Instrumentation. [back to ASP ST Membership] |