Direct evidence for chlorine-enhanced urban ozone formation in Houston, Texas
نویسندگان
چکیده
منابع مشابه
Slower ozone production in Houston, Texas following emission reductions: evidence from Texas Air Quality Studies in 2000 and 2006
Airborne measurements from two Texas Air Quality Study (TexAQS) field campaigns have been used to investigate changes of ozone production in Houston, Texas, from 2000 to 2006, a period of major emission reduction measures for petrochemical and other sources. Simultaneous declines in nitrogen oxides (NOx =NO+NO2) and highly reactive volatile organic compounds (HRVOCs) were observed between the t...
متن کاملMeteorological factors of ozone predictability at Houston, Texas.
Several ozone modeling approaches were investigated to determine if uncertainties in the meteorological data would be sufficiently large to limit the application of physically realistic ozone (O3) forecast models. Three diagnostic schemes were evaluated for the period of May through September 1997 for Houston, TX. Correlations between measured daily maximum and model calculated O3 air concentra...
متن کاملOrganic aerosol formation in urban and industrial plumes near Houston and Dallas, Texas
[1] We present measurements of organic aerosol (OA) in urban plumes from Houston and Dallas/Fort Worth as well as in industrial plumes in the Houston area during TexAQS-2006. Consistent with the TexAQS-2000 study, measurements show greater amount of aerosol mass downwind of the industrial centers compared to urban areas. This is likely due to higher emission and processing of volatile organic c...
متن کاملReductions in Ozone Concentrations due to Controls on Variability in Industrial Flare Emissions in Houston, Texas*
High concentrations of ozone in the Houston/Galveston area are associated with industrial plumes of highly reactive hydrocarbons mixed with NOx. The emissions leading to these plumes can have significant temporal variability, and photochemical modeling indicates that the emissions variability can lead to increases and decreases of 10–50 ppb, or more, in ozone concentrations. Therefore, in regio...
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ژورنال
عنوان ژورنال: Atmospheric Environment
سال: 2003
ISSN: 1352-2310
DOI: 10.1016/s1352-2310(02)01007-5