Surface ozone and peroxyacetyl nitrate (PAN) observations at rural locations in Alberta, Canada
In order to better understand and control photochemical air pollution generated under the cold, dry climatic conditions of Alberta, an extensive program of environmental research studies was initiated in 1975. One objective was to measure concentrations of surface ozone, peroxyacetyl nitrate (PAN), and other pollutants associated with urban and industrial developments and to predict future trends in photochemical air pollution. To enable predictions to be made it was necessary to delineate the contribution of background levels of ozone and PAN to the urban centers and to measure background concentrations in the presently remote northern areas of the province. Measurements were made at three remote locations: the Kananaskis Valley, Birch Mountain, and Bitumount, and at two nonurban locations, Kavanagh, and Bon Accord. Mean ozone concentration in remote locations in Alberta (50/sup 0/ N to 58/sup 0/ N) during spring and early summer months fell in the range of 11-46 ppB. Daily maxima in Pan concentrations, measured at a remote location in the Rocky Mountains, were generally less than 1 ppB. Elevated PAN concentrations of 2.2 and 2.3 ppB were measured on two days when smoke from forest fires, burning 350 km to the north, entered the area. This suggests a major natural source for PAN together with medium range transport. 2 figures, 2 tables. (DP)
- Research Organization:
- Univ. of Calgary, Alberta, Canada
- OSTI ID:
- 5354162
- Journal Information:
- J. Air Pollut. Control Assoc.; (United States), Vol. 33:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALBERTA
AIR POLLUTION
OZONE
ECOLOGICAL CONCENTRATION
PEROXYACETYL NITRATE
ATMOSPHERIC CHEMISTRY
ENVIRONMENTAL TRANSPORT
PHOTOCHEMICAL OXIDANTS
PHOTOCHEMICAL REACTIONS
RURAL AREAS
CANADA
CHEMICAL REACTIONS
CHEMISTRY
ESTERS
MASS TRANSFER
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NORTH AMERICA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)