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The Influence of the Nocturnal Boundary Layer on Secondary Trace Species in the Atmosphere at Dorset, Ontario

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dc.contributor.author Hastie, D.R.
dc.contributor.author Shepson, P.B.
dc.contributor.author Sharma, S.
dc.contributor.author Schiff, H.I.
dc.date.accessioned 2010-05-25T13:55:33Z
dc.date.available 2010-05-25T13:55:33Z
dc.date.issued 1993
dc.identifier.citation Atmospheric Environment, 27A, 533-541 en
dc.identifier.uri http://hdl.handle.net/10315/4145
dc.description.abstract 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 the nocturnal layer is clear, O3, PAN and CH2O concentrations decrease rapidly and these species appear to be deposited to the surface. Break-up of the inversion in the morning returns concentrations to levels typical of the previous day. H2O2 is removed much faster than the other species and it is replenished much more slowly. This appears to be due to the H2O2 dissolving in water droplets resulting from the rapid cooling of the air. There is evidence for a morning maximum in PAN, likely due to the combination of high concentrations being brought downwards during the break-up of the NBL followed by thermal decomposition. en
dc.language.iso en en
dc.publisher Elsevier en
dc.subject ozone en
dc.subject hydrogen peroxide en
dc.subject formaldehyde en
dc.subject PAN en
dc.subject nocturnal boundary layer en
dc.subject depostion en
dc.subject nighttime chemistry en
dc.title The Influence of the Nocturnal Boundary Layer on Secondary Trace Species in the Atmosphere at Dorset, Ontario en
dc.type Article en
dc.rights.journal http://www.elsevier.com/wps/find/homepage.cws_home en

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