@article{
 title = {Measurement of O3 and related compounds over Southern Nova Scotia .1. Vertical distributions},
 type = {article},
 year = {1996},
 keywords = {Earth sciences. Reprint available from: Kleinman L,North-atlantic. United-states. Rural site. Ozone.},
 pages = {29043-29060},
 volume = {101},
 id = {281880f0-ab0e-36a1-a995-7b1b13e73afc},
 created = {2015-02-12T02:07:55.000Z},
 file_attached = {false},
 profile_id = {81af7548-db00-3f00-bfa0-1774347c59e1},
 group_id = {63e349d6-2c70-3938-9e67-2f6483f6cbab},
 last_modified = {2015-02-12T20:18:39.000Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 source_type = {Journal Article},
 notes = {<m:note>English Article<m:linebreak/>Current Contents/Physical, Chemical &amp; Earth Sciences.<m:linebreak/>Reprint available from: Kleinman LI BROOKHAVEN NATL LAB ENVIRONM CHEM DIV POB 5000 UPTON, NY 11973 USA ATMOSPHER ENVIRONM SERV CLOUD PHYS RES DIV DOWNSVIEW ON M3H 5T4 CANADA NATL RES COUNCIL CANADA INST AEROSP RES OTTAWA ON K1A 0R6 CANADA 0035</m:note>},
 abstract = {As part of the North Atlantic Regional Experiment, the National Research Council of Canada Twin Otter aircraft was used to measure the concentration of O-3 and related compounds in the atmosphere over southern Nova Scotia. Forty-eight flights were conducted, primarily over the surface sampling site in Chebogue Point, Nova Scotia, or over the adjoining Atlantic Ocean. A typical flight included one or more vertical profiles from 30 m above the surface to an altitude of 3 or 5 km. We present here O-3 measurements and supporting chemical and meteorological data including NOy, CO, accumulation mode aerosol particles, winds, temperature, and dew point. Data are presented in a format which illustrates day-to-day variability and vertical structure; We find that Nova Scotia is impacted by a wide variety of air masses with varying chemical content depending on flow conditions relative to the locations of upwind emission regions. As an aid to understanding the chemical composition of the air, we characterize four types of events: (1) moist continental boundary layer air with high concentrations of O-3 and other anthropogenic pollutants which is advected to Nova Scotia in relatively thin vertical layers, usually with a base altitude of several hundred meters; (2) ''background'' air with concentrations of anthropogenic ingredients much lower than experienced in continental pollution episodes but higher than observed in more remote regions of Canada, suggesting a dilute anthropogenic or biomass burning influence; (3) near-surface air which because of a strong temperature inversion over the Atlantic Ocean, is decoupled from air aloft, with the consequence that near-surface measurements do not give a representative view of the eastward transport of the North American plume; and (4) dry air masses with high O, concentration in which we have to distinguish between boundary layer and upper atmosphere source regions. [References: 20] 20},
 bibtype = {article},
 author = {Kleinman, L I and Daum, P H and Lee, Y N and Springston, S R and Newman, L and Leaitch, W R and Banic, C M and Isaac, G A and Macpherson, J I},
 journal = {Journal of Geophysical Research-Atmospheres},
 number = {D22}
}

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Forty-eight flights were conducted, primarily over the surface sampling site in Chebogue Point, Nova Scotia, or over the adjoining Atlantic Ocean. A typical flight included one or more vertical profiles from 30 m above the surface to an altitude of 3 or 5 km. We present here O-3 measurements and supporting chemical and meteorological data including NOy, CO, accumulation mode aerosol particles, winds, temperature, and dew point. Data are presented in a format which illustrates day-to-day variability and vertical structure; We find that Nova Scotia is impacted by a wide variety of air masses with varying chemical content depending on flow conditions relative to the locations of upwind emission regions. As an aid to understanding the chemical composition of the air, we characterize four types of events: (1) moist continental boundary layer air with high concentrations of O-3 and other anthropogenic pollutants which is advected to Nova Scotia in relatively thin vertical layers, usually with a base altitude of several hundred meters; (2) ''background'' air with concentrations of anthropogenic ingredients much lower than experienced in continental pollution episodes but higher than observed in more remote regions of Canada, suggesting a dilute anthropogenic or biomass burning influence; (3) near-surface air which because of a strong temperature inversion over the Atlantic Ocean, is decoupled from air aloft, with the consequence that near-surface measurements do not give a representative view of the eastward transport of the North American plume; and (4) dry air masses with high O, concentration in which we have to distinguish between boundary layer and upper atmosphere source regions. 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