U.S. Army Research Laboratory Meteorological Measurements for Joint Urban 2003
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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The Joint Urban 2003 JU2003 project, a multi-agency undertaking to study turbulent transport and diffusion in the urban boundary layer, was conducted in Oklahoma City, OK, in summer 2003. The field campaign involved extensive meteorological and gas tracer measurements to investigate the dispersion of simulated contaminants in and around the city. Instrumentation provided by the U.S. Army Research Laboratorys ARL Battlefield Environment Division BED included a Doppler lidar, a mobile radiosonde system, a temperaturemoisture profiling microwave radiometer, and an array of three dimensional 3D sonic anemometers mounted on five meteorological towers near and outside the central business district CBD. In this volume, we describe the temperature, wind, turbulence intensity, and heat and momentum flux measurements obtained by the ARL array of sonic anemometers, all of which were confined to the roughness sub-layer RSL of the city. We analyze the temporal and spatial variability of wind and turbulence parameters, focusing on daynight and urbansuburban differences and similarities, and extend the analyses to profiles of turbulence data obtained from sonic anemometers mounted on an 85-m pseudo-tower.
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