edu.ucar.opensky::articles:6957 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T15:38:41.942036 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7h1328p Impacts of biogenic emissions on photochemical ozone production in Houston, Texas 2007-03-23T00:00:00Z publication https://n2t.org/ark:/85065/d7h1328p https://doi.org/10.1029/2006JD007924 Li, G. author Zhang, R. author Fan, J. author Tie, Xue X. author UCAR/NCAR - Library publisher A regional chemical transport model (CTM) has been employed to assess the influence of biogenic emissions on ozone (O₃) formation in Houston, Texas during an eight-day episode of 24–31 August 2000 in association with the Texas Air Quality Study (TexAQS) 2000. The effects of isoprene and monoterpene emissions on O₃ photochemistry in this region were investigated. Isoprene emissions played an important role in O₃ formation when the O₃ plume occurred in the afternoon over the urban Houston area. When the isoprene emissions were decreased or increased by 50%, the O₃ concentration was decreased or increased by 5–25 ppb over the urban Houston area, respectively, but the change in the O₃ concentration was less than 5–10 ppb over the industrial Ship Channel. Additional sensitivity studies showed that the surface O₃ change resulted primarily from local isoprene emissions, although transport of isoprene from the north of the urban Houston area was found to be nonnegligible in the isoprene budget on several days. The contribution of monoterpene emissions to O₃ formation was insignificant due to low emission rate and relatively slow reaction rate. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2007 American Geophysical Union. None eng geoscientificInformation