1996
DOI: 10.1080/10473289.1996.10467445
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Background Ozone in the Planetary Boundary Layer Over the United States

Abstract: Reliable estimates of background O 3 in the planetary boundary layer are needed as part of the current review by the U.S.

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Cited by 46 publications
(40 citation statements)
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“…Background O3 concentrations in surface air over the United States, as derived from measurements at clean sites or from the intercept of correlations between O3 and NOv (total reactive nitrogen oxides), are in the range 25-55 ppbv [Logan, 1989;Altshuller and Lefohn, 1996;Hirsch et al, 1996]. This background can be largely attributed to transport from outside the United States, and it probably includes a major anthropogenic component.…”
Section: Saylot Et Al [1998] Find That Many Rural Areas Of the Unitedmentioning
confidence: 99%
“…Background O3 concentrations in surface air over the United States, as derived from measurements at clean sites or from the intercept of correlations between O3 and NOv (total reactive nitrogen oxides), are in the range 25-55 ppbv [Logan, 1989;Altshuller and Lefohn, 1996;Hirsch et al, 1996]. This background can be largely attributed to transport from outside the United States, and it probably includes a major anthropogenic component.…”
Section: Saylot Et Al [1998] Find That Many Rural Areas Of the Unitedmentioning
confidence: 99%
“…Observed ozone concentrations at remote sites in northern mid-latitudes are in the range of 15-50 ppb (Altshuller and Lefohn, 1996;Fiore et al, 2002a;Vingarzan, 2004), representing a significant increment toward the standards. These remote concentrations have increased over the past decades (Lin et al, 2000;Jaffe and Ray, 2007), due at least in part to hemispheric-scale pollution (Fiore et al, 2002a).…”
Section: Introductionmentioning
confidence: 99%
“…Quantifying this type of background is clearly impossible using observations due to the fact that North American emissions cannot be completely turned off in order to make direct atmospheric measurements. However, it remains that estimating baseline levels is complicated by the fact that this unobserved, derived entity varies substantially depending on meteorology, geographic area, elevation, season, and averaging time (Altshuller and Lefohn, 1996).…”
Section: Introductionmentioning
confidence: 99%
“…The term background is often used in atmospheric science to describe mixing ratios at clean, remote sites (Altshuller, 1987;Altshuller and Lefohn, 1996;Lin et al, 2000;Lefohn et al, 2001;Jaffe et al, 2003;Vingarzan, 2004;Oltmans et al, 2008). However, for relatively well-mixed secondary pollutants such as ozone, all sites in the northern hemisphere are influenced in some way and at some time by anthropogenic emissions, which makes the use of this term ambiguous.…”
Section: Introductionmentioning
confidence: 99%