Spatial and Temporal Variability of Ozone Exposure in Forested Areas of the United States and Canada: 1978—1988

Ambient O3 exposures have reduced growth rates of tree genotypes in some areas of the United States. For characterizing O3 exposures in forested areas, data from primarily population-oriented sites have been used. It has been speculated that exposures calculated from population-oriented sites provide estimates greater than those that would actually be experienced in the majority of forested areas. Accordingly, we compared 1988 O3 data from three remote forested sites with data from several population-oriented monitoring sites in and around the mid− and southern Appalachian Mountains. The number of hours ≥0.08 ppm was lower at the remote forested sites than at the nearby population-oriented locations. In addition, we characterized the temporal variability of O3 exposures in forested regions of the United States and Canada for the period 1978-1988. We found that the years of highest O3 exposure in the eastern United States during 1978-1988 were 1978, 1980, 1983, and 1988, with 1988 being the worst year in f...

[1]  J. Logan.  Tropospheric ozone: Seasonal behavior, trends, and anthropogenic influence , 1985 .

[2]  J. Bennett,et al.  Growth response of two varieties of slash pine seedlings to chronic ozone exposures , 1985 .

[3]  W. Stasiuk,et al.  Rural and urban ozone relationships in New York State. , 1974, Journal of the Air Pollution Control Association.

[4]  C. Berry.  DIFFERENCES IN CONCENTRATIONS OF SURFACE OXIDANT BETWEEN VALLEY AND MOUNTAINTOP CONDITIONS IN THE SOUTHERN APPALACHIANS. , 1964, Journal of the Air Pollution Control Association.

[5]  C. Claiborn,et al.  Exceedances of the National Ambient Air Quality Standard for Ozone Occurring at a “Pristine” Area Site , 1990 .

[6]  S. Krupa,et al.  Ozone and oxides of nitrogen in the rural upper-midwestern U.S.A. , 1983 .

[7]  J. E. Pinkerton,et al.  High Resolution Characterization of Ozone Data for Sites Located in Forested Areas of the United States , 1988 .

[8]  A. Lefohn,et al.  Co-occurrence patterns of gaseous air-pollutant pairs at different minimum concentrations in the United States (journal version) , 1987 .

[9]  Seasonal ozone levels and control by seasonal meteorology , 1990 .

[10]  A. Lefohn,et al.  The characterization of ozone, sulfur dioxide, and nitrogen dioxide for selected monitoring sites in the Federal Republic of Germany. , 1986, Journal of the Air Pollution Control Association.

[11]  Jennifer A. Logan,et al.  Ozone in rural areas of the United States , 1989 .

[12]  A. Lefohn,et al.  The characterization of ozone concentrations at a select set of high-elevation sites in the eastern United States. , 1990, Environmental pollution.

[13]  G. Wolff,et al.  Sources and sinks of ozone in rural areas , 1984 .

[14]  Allen S. Lefohn,et al.  An Evaluation of the Kriging Method to Predict 7-h Seasonal Mean Ozone Concentrations for Estimating Crop Losses , 1987 .

[15]  A. Lefohn,et al.  The Characterization of Ozone and Sulfur Dioxide Air Quality Data for Assessing Possible Vegetation Effects , 1986 .

[16]  T. Larson,et al.  A theoretical investigation of the pressure and temperature dependence of atmospheric ozone deposition to trees. , 1990, Environmental pollution.

[17]  G. Wolff,et al.  The Diurnal Variations of Ozone at Different Altitudes on a Rural Mountain in the Eastern United States , 1987 .

[18]  A. Lefohn,et al.  Establishing standards to protect vegetation—ozone exposure/dose considerations , 1987 .

[19]  A. Lefohn,et al.  Air quality measurements and characterizations for vegetation effects research , 1990 .

[20]  J. E. Pinkerton,et al.  The Characterization of Ozone Data for Sites Located in Forested Areas of the Eastern United States , 1987 .

[21]  S V Krupa,et al.  Surface ozone exposures measured at clean locations around the world. , 1990, Environmental pollution.

[22]  G. Wolff,et al.  The Chemical and Meteorological Conditions Associated with High and Low Ozone Concentrations in Southeastern Michigan and Nearby Areas of Ontario , 1986 .