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001 | 9.911878 |
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003 | CaOODSP |
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005 | 20221107182438 |
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006 | m o d f |
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007 | cr bn||||||||| |
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008 | 220517e199304##oncbd ob f000 0 eng d |
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040 | |aCaOODSP|beng|erda|cCaOODSP |
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043 | |an-cn-bc |
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086 | 1 |aEn57-51/93-002E-PDF |
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100 | 1 |aMartin, J. B., |eauthor. |
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245 | 10|aLower Fraser Valley study, July 28-August 28, 1992 / |cby J.B. Martin and F.A. Froude, Centre for Atmospheric Research Experiments and B. Thomson and C. Evans, Atmospheric Issues and Services Branch, Pacific Region. |
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264 | 1|aEgbert, Ontario : |bCentre for Atmospheric Research Experiments, Air Quality Research Branch, Atmospheric Environment Service ; |aVancouver, B.C. : |bCentre for Atmospheric Research Experiments, Atmospheric Issues and Services Branch, |cApril 1993. |
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300 | |a1 online resource (i, 14 pages, 68 unnumbered pages) : |bmaps, graphs. |
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336 | |atext|btxt|2rdacontent |
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337 | |acomputer|bc|2rdamedia |
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338 | |aonline resource|bcr|2rdacarrier |
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490 | 0 |aARD report ; |v93-002 |
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500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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504 | |aIncludes bibliographical references (page 14). |
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520 | 3 |a"In the summer of 1992, a study was initiated in the Lower Fraser Valley of British Columbia to gather information relevant to the occurrence of photochemical smog. Two episodes were observed, one on July 31 and another in the period of August 12-13. Atmospheric profiles of tropospheric ozone, temperature, humidity and winds collected at frequent intervals during daytime are presented as well as contours of surface ozone concentrations. At the Clearbrook B.C. sampling site, the highest observed concentration of ozone was 65 ppb, however the Greater Vancouver Regional District monitoring station at Chilliwak B.C. recorded an hourly average of 81 ppb on August 13th 1992. Contour plots of hourly averages of ozone indicate that ozone generated in the urban core is transported up the valley throughout the day. Vertical profiles show that erosion of the ozone aloft is tied in to southwesterly flows, suggesting that perhaps some NOx/03 chemistry is also occurring"--Abstract, page i. |
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650 | 0|aOzone layer|zBritish Columbia|zFraser River Valley. |
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650 | 0|aPhotochemical smog|zBritish Columbia|zFraser River Valley. |
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650 | 6|aCouche d'ozone|zColombie-Britannique|zFraser, Vallée du. |
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650 | 6|aSmog photochimique|zColombie-Britannique|zFraser, Vallée du. |
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710 | 1 |aCanada. |bAtmospheric Environment Service, |eissuing body. |
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856 | 40|qPDF|s3.26 MB|uhttps://publications.gc.ca/collections/collection_2022/eccc/En57-51-93-002-eng.pdf |
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