HR: 08:30h
AN: A51G-03    [Abstracts]
TI: Mixing heights and surface fluxes over Galveston Bay and the Gulf of Mexico: Implications for modeling of pollution episodes
AU: * Angevine, W M
EM: Wayne.M.Angevine@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, 325 Broadway, Boulder, CO 80305,
AU: * Angevine, W M
EM: Wayne.M.Angevine@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway, Boulder, CO 80305,
AU: Tucker, S C
EM: Sara.Tucker@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, 325 Broadway, Boulder, CO 80305,
AU: Tucker, S C
EM: Sara.Tucker@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway, Boulder, CO 80305,
AU: Fairall, C
EM: Chris.Fairall@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway, Boulder, CO 80305,
AU: Bariteau, L
EM: Ludovic.Bariteau@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, 325 Broadway, Boulder, CO 80305,
AU: Bariteau, L
EM: Ludovic.Bariteau@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway, Boulder, CO 80305,
AU: Wolfe, D
EM: Daniel.Wolfe@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway, Boulder, CO 80305,
AU: Zagar, M
EM: Mark.Zagar@gov.si
AF: Meteorological Service, Environmental Agency of Slovenia, Vojkova 1B, Ljubljana, SI-1000, Slovenia
AU: Brewer, A
EM: Alan.Brewer@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway, Boulder, CO 80305,
AB: During the 2006 Texas Air Quality Study, boundary layer measurements were made by in-situ instruments, lidars, and rawinsondes on the NOAA RV Ronald H. Brown as well as by radar wind profilers on land. Brown also carried instruments to measure surface heat and momentum fluxes. This presentation will emphasize measurements made in Galveston Bay and in the Gulf of Mexico near the Houston area. Details of boundary layer depth and turbulence intensity over these waters have not been well known previously, but are quite important to the understanding of high ozone episodes in Houston. One somewhat surprising result is that the boundary layer over water was almost always slightly unstable, with positive surface heat flux. Mixing depths were moderate, although mixing was generally weak compared to that over land. Boundary layer heights over the water were substantially shallower than daytime heights over land. Experiments in modeling ozone episodes with WRF at 1.5-km grid spacing will be shown and compared with the measurements.
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