HR: 0800h
AN: A51B-0352    [Abstracts]
TI: A Comparison of Wind Profiler and Model-based Trajectory Calculations
AU: * White, A B
EM: allen.b.white@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder UCB 216, Boulder, CO 80309, United States
AU: Bao, J
EM: jian-wen.bao@noaa.gov
AF: Earth System Research Laboratory, Physical Sciences Division, 325 Broadway R/PSD, Boulder, CO 80305, United States
AU: Djalalova, I V
EM: irina.v.djalalova@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder UCB 216, Boulder, CO 80309, United States
AB: During the 2000 Central California Ozone Study (CCOS 2000), NOAA and collaborative agencies deployed a network of 25 wind profilers to help document the transport and general meteorological conditions associated with air pollution events. Since then, the NOAA Earth System Research Laboratory has developed a web-based wind profiler trajectory tool that uses horizontal winds provided by profiler networks to calculate particle trajectories. In this paper we compare mesoscale (0-2 day) trajectories computed from the profiler network data with two sets of three-dimensional model-based trajectories to evaluate the benefits and deficiencies of each method. The first set of model-based trajectories uses the three-dimensional model winds interpolated to the profiler locations. The goal here is to determine the impact of the simulated vertical motion field on the trajectories. The second set of model-based trajectories uses model runs with data assimilation. The goal here is to see how strongly the model is driven by the wind profiler observations. The models used in the study are the NOAA Earth System Research Laboratory's version of the Pennsylvania State University/National Center for Atmospheric Research Mesoscale Model (MM5) and the Weather and Research Forecast Model (WRF).
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 3307 Boundary layer processes
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting