Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay
We report in situ measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> in Contra Costa County, California during January 2004. Mixing ratios of N<sub>2</sub>O<sub>5</sub>, an intermediate compound in the...
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Copernicus Publications
2005-01-01
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Series: | Atmospheric Chemistry and Physics |
Online Access: | http://www.atmos-chem-phys.net/5/483/2005/acp-5-483-2005.pdf |
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author | E. C. Wood T. H. Bertram P. J. Wooldridge R. C. Cohen R. C. Cohen R. C. Cohen |
author_facet | E. C. Wood T. H. Bertram P. J. Wooldridge R. C. Cohen R. C. Cohen R. C. Cohen |
author_sort | E. C. Wood |
collection | DOAJ |
description | We report in situ measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> in Contra Costa County, California during January 2004. Mixing ratios of N<sub>2</sub>O<sub>5</sub>, an intermediate compound in the atmosphere's nocturnal cleansing process, ranged up to 200pmol/mol at night. The highest N<sub>2</sub>O<sub>5</sub> concentrations were correlated with low O<sub>3</sub> and high NO<sub>2</sub> concentrations. The calculated steady state lifetime for N<sub>2</sub>O<sub>5</sub> ranged from 5 to 30min. The total HNO<sub>3</sub> produced by N<sub>2</sub>O<sub>5</sub> hydrolysis over a 14h night was comparable to ambient NO<sub>2</sub> concentrations, and is estimated to be a factor of nine bigger than the HNO<sub>3</sub> produced during the day. |
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language | English |
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series | Atmospheric Chemistry and Physics |
spelling | doaj.art-7f888d1fd1c04ce3b0157571173526d62022-12-21T22:25:07ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242005-01-0152483491Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco BayE. C. WoodT. H. BertramP. J. WooldridgeR. C. CohenR. C. CohenR. C. CohenWe report in situ measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> in Contra Costa County, California during January 2004. Mixing ratios of N<sub>2</sub>O<sub>5</sub>, an intermediate compound in the atmosphere's nocturnal cleansing process, ranged up to 200pmol/mol at night. The highest N<sub>2</sub>O<sub>5</sub> concentrations were correlated with low O<sub>3</sub> and high NO<sub>2</sub> concentrations. The calculated steady state lifetime for N<sub>2</sub>O<sub>5</sub> ranged from 5 to 30min. The total HNO<sub>3</sub> produced by N<sub>2</sub>O<sub>5</sub> hydrolysis over a 14h night was comparable to ambient NO<sub>2</sub> concentrations, and is estimated to be a factor of nine bigger than the HNO<sub>3</sub> produced during the day.http://www.atmos-chem-phys.net/5/483/2005/acp-5-483-2005.pdf |
spellingShingle | E. C. Wood T. H. Bertram P. J. Wooldridge R. C. Cohen R. C. Cohen R. C. Cohen Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay Atmospheric Chemistry and Physics |
title | Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay |
title_full | Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay |
title_fullStr | Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay |
title_full_unstemmed | Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay |
title_short | Measurements of N<sub>2</sub>O<sub>5</sub>, NO<sub>2</sub>, and O<sub>3</sub> east of the San Francisco Bay |
title_sort | measurements of n sub 2 sub o sub 5 sub no sub 2 sub and o sub 3 sub east of the san francisco bay |
url | http://www.atmos-chem-phys.net/5/483/2005/acp-5-483-2005.pdf |
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