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The Southern Ontario Oxidant Study (SONTOS): Overview and Case Studies for 1992
The southern Ontario oxidant study (SONTOS) is one of the scientific responses to the problem of ozone exceedences in the Windsor/Quebec City corridor, the strip extending from Windsor in the extreme southwest of Ontario, ...
Impact of Toronto Urban Emissions on Ozone Levels Downwind - A Case Study
During the 1992 Southern Ontario Oxidants Study (SONTOS 92), an impingement of the Greater Toronto urban plume was observed in the late afternoon of 6 August at the Hastings monitoring site, 140 km to the northeast of the ...
Summertime NOx NOy and Ozone at a Site in Rural Ontario: Results from SONTOS
Measurements of NOy, NOx NO, SO2, PAN, HNO3, O3, and CO, obtained as part of SONTOS, have been examined to give a picture of the typical chemistry at this location, and for comparison with other North American sites. The ...
Laboratory studies of bromide oxidation in the presence of ozone: Evidence for glass-surface mediated reaction
(Springer Verlag, 2002)
The reaction of sodium bromide particles in the presence of ozone was studied in a flow system both under dark conditions and with 254 nm radiation. We found that there was significant formation of gaseous bromine (probably ...
Relationships between PAN, PPN, O3 and NOx at Urban and Rural sites in Ontario
PAN concentrations were determined during the summer of 1989 and the winter of 1990 at three sites in Ontario representing urban (Toronto), suburban downwind (Stouffville) and rural (Dorset) locations. PAN concentrations ...
The Influence of the Nocturnal Boundary Layer on Secondary Trace Species in the Atmosphere at Dorset, Ontario
The impact of the nocturnal boundary layer (NBL) on the concentrations of O3, H2O2, PAN and CH2O has been studied for two 4-day periods, one in the summer of 1989 and the other in the spring of 1990. Where the presence of ...