Argonne National Laboratory Tribal Internship Program

Field studies and modeling are emphasized. GLOBAL CHANGE studies use observational facilities in the Southern Great Plains to study processes that are important in climate modeling. Improved subgrid-scale parameterizations are developed for the structure of the planetary boundary layer and the air-surface exchange of heat, moisture, and solar and infrared radiation. REMOTE SENSING from the ground uses Doppler acoustic, radar, and laser systems along with in situ observational systems to study the structure of the planetary boundary layer and to evaluate the transport and dispersive properties of the lower atmosphere above complete terrain. Satellite data on optical radiance reflectances from land surfaces are used to study energy balances and the corresponding biological properties that affect energy flows. For WATER and BIOCHEMICAL CYCLE studies, heat, water vapor, and carbon dioxide fluxes, nitrogen deposition and fluxes as well as soil moisture content are evaluated over large terrestrial areas with models and results are compared to local observations made in the field sites located at Southern Great Plains and Fermi Lab. NUMERICAL MODELS are developed and applied to study the structure of planetary boundary layer as it affects energy flows, meteorological conditions, and the transport and dispersion of trace chemicals.