Spatial distribution of tropospheric ozone in western Washington, USA
Cooper, S.M., and D.L. Peterson. 2000. Spatial distribution of tropospheric ozone in western Washington, USA. Environmental Pollution 107:339-347.
We quantified the distribution of tropospheric ozone in topographically complex western Washington state, USA (total area approximate to 6000 km(2)). using passive ozone samplers along nine river drainages to measure ozone exposure from near sea level to high-elevation mountain sites. Weekly average ozone concentrations were higher with increasing distance from the urban core and at higher elevations, increasing a mean of 1.3 ppbv per 100 m elevation gain for all mountain transects. weekly average ozone concentrations were generally highest in Cascade Mountains drainages east and southeast of Seattle (maximum = 55-67 pbv) and in the Columbia River Gorge east of Portland (maximum = 59 ppbv), and lowest in the western Olympic Peninsula (maximum = 34 ppbv).
UW Climate Impacts Group