Trace-gas mixing in isolated urban boundary layers: Results from the 2001 Phoenix sunrise experiment

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Title: Trace-gas mixing in isolated urban boundary layers: Results from the 2001 Phoenix sunrise experiment
Authors: Berkowitz, Carl M.1 carl.berkowitz@pnl.gov, Christopher Doran, J.1, Shaw, William J.1, Springston, Stephen R.2, Spicer, Chester W.3
Source: Atmospheric Environment. Jan2006, Vol. 40 Issue 1, p50-57. 8p.
Subject Terms: *Air pollution, *Meteorology, *Air quality, Atmospheric boundary layer
Abstract: Abstract: Measurements made from surface sites, from the 50 and 140m levels (the 16th and 39th floors) of a skyscraper, and from an instrumented aircraft are used to characterize early morning profiles of CO, NO y , and O3 within the mid-morning summertime convective atmospheric boundary layer (CABL) over Phoenix, Arizona. Although mixing was anticipated to produce uniform values of these species throughout the CABL, this was found not to be the case. Background air advected into the upper levels of the boundary layer and entrained air from above appear to be the most likely cause for the lack of well-mixed trace gases. The results show that surface measurements may provide only limited information on concentrations of trace-gas species higher in the boundary layer. [Copyright &y& Elsevier]
Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="AR" term="%22Berkowitz%2C+Carl+M%2E%22">Berkowitz, Carl M.</searchLink><relatesTo>1</relatesTo><i> carl.berkowitz@pnl.gov</i><br /><searchLink fieldCode="AR" term="%22Christopher+Doran%2C+J%2E%22">Christopher Doran, J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shaw%2C+William+J%2E%22">Shaw, William J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Springston%2C+Stephen+R%2E%22">Springston, Stephen R.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Spicer%2C+Chester+W%2E%22">Spicer, Chester W.</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Atmospheric+Environment%22">Atmospheric Environment</searchLink>. Jan2006, Vol. 40 Issue 1, p50-57. 8p.
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  Data: *<searchLink fieldCode="DE" term="%22Air+pollution%22">Air pollution</searchLink><br />*<searchLink fieldCode="DE" term="%22Meteorology%22">Meteorology</searchLink><br />*<searchLink fieldCode="DE" term="%22Air+quality%22">Air quality</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+boundary+layer%22">Atmospheric boundary layer</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Measurements made from surface sites, from the 50 and 140m levels (the 16th and 39th floors) of a skyscraper, and from an instrumented aircraft are used to characterize early morning profiles of CO, NO y , and O3 within the mid-morning summertime convective atmospheric boundary layer (CABL) over Phoenix, Arizona. Although mixing was anticipated to produce uniform values of these species throughout the CABL, this was found not to be the case. Background air advected into the upper levels of the boundary layer and entrained air from above appear to be the most likely cause for the lack of well-mixed trace gases. The results show that surface measurements may provide only limited information on concentrations of trace-gas species higher in the boundary layer. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.atmosenv.2005.08.039
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      – Code: eng
        Text: English
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        Type: general
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      – SubjectFull: Air quality
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      – SubjectFull: Atmospheric boundary layer
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      – TitleFull: Trace-gas mixing in isolated urban boundary layers: Results from the 2001 Phoenix sunrise experiment
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              M: 01
              Text: Jan2006
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              Y: 2006
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