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Title: Estimating contribution of wildland fires to ambient ozone levels in National Parks in the Sierra Nevada, California

Author: Preisler, Haiganoush K.; Zhong, Shiyuan (Sharon); Esperanza, Annie; Brown, Timothy J.; Bytnerowicz, Andrzej; Tarnay, Leland

Date: 2010

Source: Environmental Pollution 158(3): 778-787

Publication Series: Journal/Magazine Article (JRNL)

Description: Data from four continuous ozone and weather monitoring sites operated by the National Park Service in Sierra Nevada, California, are used to develop an ozone forecasting model and to estimate the contribution of wildland fires on ambient ozone levels. The analyses of weather and ozone data pointed to the transport of ozone precursors from the Central Valley as an important source of pollution in these National Parks. Comparisons of forecasted and observed values demonstrated that accurate forecasts of next-day hourly ozone levels may be achieved by using a time series model with historic averages, expected local weather and modeled PM values as explanatory variables. Results on fire smoke influence indicated occurrence of significant increases in average ozone levels with increasing fire activity. The overall effect on diurnal ozone values, however, was small when compared with the amount of variability attributed to sources other than fire.

Keywords: BlueSky, California air-quality standard, Next-day ozone forecasts, Air pollution, Fire smoke, Regression models, Spline functions, Time series

Publication Notes:

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Preisler,Haiganoush K.; Zhong, Shiyuan (Sharon); Esperanza, Annie; Brown, Timothy J.; Bytnerowicz, Andrzej; Tarnay, Leland. 2010. Estimating contribution of wildland fires to ambient ozone levels in National Parks in the Sierra Nevada, California. Environmental Pollution 158(3): 778-787

 


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