DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air
We present the first direct measurements of glyoxal (CHOCHO) in the atmosphere, and demonstrate that glyoxal measurements are possible by differential optical absorption spectroscopy (DOAS). Glyoxal was routinely detected during the daytime in Mexico City, where mixing ratios ranged from
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| Veröffentlicht in: | Geophysical research letters 2005-04, Vol.32 (8), p.L08806.1-n/a |
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| container_title | Geophysical research letters |
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| creator | Volkamer, Rainer Molina, Luisa T. Molina, Mario J. Shirley, Terry Brune, William H. |
| description | We present the first direct measurements of glyoxal (CHOCHO) in the atmosphere, and demonstrate that glyoxal measurements are possible by differential optical absorption spectroscopy (DOAS). Glyoxal was routinely detected during the daytime in Mexico City, where mixing ratios ranged from |
| doi_str_mv | 10.1029/2005GL022616 |
| format | Article |
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Glyoxal was routinely detected during the daytime in Mexico City, where mixing ratios ranged from <0.15 ppbv (detection limit) to 1.82 ppbv. These time‐resolved measurements resolve the rapid diurnal variation of glyoxal, and indicate the onset of volatile organic compound (VOC) oxidation about 1hr after sunrise. The atmospheric lifetime of glyoxal is determined to be 1.3 hr for overhead sun conditions. Then elevated glyoxal levels indicate a persistently active VOC chemistry during most of the day. Glyoxal forms from the oxidation of numerous VOCs, which foster the formation of ‘photochemical smog’ including ozone and aerosol particles; atmospheric levels are essentially unaffected by direct vehicle emissions in Mexico City. Satellite measurements of glyoxal seem feasible, making possible the better identification of photochemical hot spots in the Earth's atmosphere.</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2005GL022616</identifier><identifier>CODEN: GPRLAJ</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Absorption spectroscopy ; Aerosols ; Atmospheres ; Atmospherics ; Daytime ; Diurnal variations ; Earth atmosphere ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Geophysics ; Mixing ratios ; Oxidation ; Ozone ; Satellites ; Smog ; Sun ; Sunrise ; Vehicles ; Volatile Organic Compounds</subject><ispartof>Geophysical research letters, 2005-04, Vol.32 (8), p.L08806.1-n/a</ispartof><rights>Copyright 2005 by the American Geophysical Union.</rights><rights>2005 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5050-20d8488efa509a900e2a42fcad70e14ccc3c3ecce82043ff2abbf661a3bc95433</citedby><cites>FETCH-LOGICAL-c5050-20d8488efa509a900e2a42fcad70e14ccc3c3ecce82043ff2abbf661a3bc95433</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2005GL022616$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2005GL022616$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,11495,27903,27904,45553,45554,46387,46446,46811,46870</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16816344$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Volkamer, Rainer</creatorcontrib><creatorcontrib>Molina, Luisa T.</creatorcontrib><creatorcontrib>Molina, Mario J.</creatorcontrib><creatorcontrib>Shirley, Terry</creatorcontrib><creatorcontrib>Brune, William H.</creatorcontrib><title>DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>We present the first direct measurements of glyoxal (CHOCHO) in the atmosphere, and demonstrate that glyoxal measurements are possible by differential optical absorption spectroscopy (DOAS). Glyoxal was routinely detected during the daytime in Mexico City, where mixing ratios ranged from <0.15 ppbv (detection limit) to 1.82 ppbv. These time‐resolved measurements resolve the rapid diurnal variation of glyoxal, and indicate the onset of volatile organic compound (VOC) oxidation about 1hr after sunrise. The atmospheric lifetime of glyoxal is determined to be 1.3 hr for overhead sun conditions. Then elevated glyoxal levels indicate a persistently active VOC chemistry during most of the day. Glyoxal forms from the oxidation of numerous VOCs, which foster the formation of ‘photochemical smog’ including ozone and aerosol particles; atmospheric levels are essentially unaffected by direct vehicle emissions in Mexico City. Satellite measurements of glyoxal seem feasible, making possible the better identification of photochemical hot spots in the Earth's atmosphere.</description><subject>Absorption spectroscopy</subject><subject>Aerosols</subject><subject>Atmospheres</subject><subject>Atmospherics</subject><subject>Daytime</subject><subject>Diurnal variations</subject><subject>Earth atmosphere</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Geophysics</subject><subject>Mixing ratios</subject><subject>Oxidation</subject><subject>Ozone</subject><subject>Satellites</subject><subject>Smog</subject><subject>Sun</subject><subject>Sunrise</subject><subject>Vehicles</subject><subject>Volatile Organic Compounds</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqN0U9v0zAYBnALDYmy7cYH8AVOBF7_ieMcS7cFpGgdbJSj9ca1t0CadHYq2m8_V52AE9vBsg-_55Glh5A3DD4w4OVHDpBXNXCumHpBJqyUMtMAxRGZAJTpzQv1iryO8ScACBBsQuZn8-k1XTmMm-BWrh_p4Olttxu22FGMFHva9svW4jgE6vcH40gX8xm1d27VxjHsEqCb0CSJbTghLz120Z0-3sfk-8X5zexzVs-rL7Npndkccsg4LLXU2nnMocQSwHGU3FtcFuCYtNYKK5y1TnOQwnuOTeOVYigaW-ZSiGPy7tC7DsP9xsXRpM9Y13XYu2ETDddaC6H5M6AslBTsScgUK7mSeYLvD9CGIcbgvFmHdoVhZxiY_Q7m3x0Sf_vYi9Fi5wP2to1_M0onJGVy_OB-t53b_bfTVN9qVioNKZQdQmkJt_0TwvDLqEIUuflxWZmFvtIXsvpkvooHxwmjyw</recordid><startdate>200504</startdate><enddate>200504</enddate><creator>Volkamer, Rainer</creator><creator>Molina, Luisa T.</creator><creator>Molina, Mario J.</creator><creator>Shirley, Terry</creator><creator>Brune, William H.</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TV</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>7SU</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>200504</creationdate><title>DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air</title><author>Volkamer, Rainer ; Molina, Luisa T. ; Molina, Mario J. ; Shirley, Terry ; Brune, William H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5050-20d8488efa509a900e2a42fcad70e14ccc3c3ecce82043ff2abbf661a3bc95433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Absorption spectroscopy</topic><topic>Aerosols</topic><topic>Atmospheres</topic><topic>Atmospherics</topic><topic>Daytime</topic><topic>Diurnal variations</topic><topic>Earth atmosphere</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Geophysics</topic><topic>Mixing ratios</topic><topic>Oxidation</topic><topic>Ozone</topic><topic>Satellites</topic><topic>Smog</topic><topic>Sun</topic><topic>Sunrise</topic><topic>Vehicles</topic><topic>Volatile Organic Compounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Volkamer, Rainer</creatorcontrib><creatorcontrib>Molina, Luisa T.</creatorcontrib><creatorcontrib>Molina, Mario J.</creatorcontrib><creatorcontrib>Shirley, Terry</creatorcontrib><creatorcontrib>Brune, William H.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Volkamer, Rainer</au><au>Molina, Luisa T.</au><au>Molina, Mario J.</au><au>Shirley, Terry</au><au>Brune, William H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2005-04</date><risdate>2005</risdate><volume>32</volume><issue>8</issue><spage>L08806.1</spage><epage>n/a</epage><pages>L08806.1-n/a</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>We present the first direct measurements of glyoxal (CHOCHO) in the atmosphere, and demonstrate that glyoxal measurements are possible by differential optical absorption spectroscopy (DOAS). Glyoxal was routinely detected during the daytime in Mexico City, where mixing ratios ranged from <0.15 ppbv (detection limit) to 1.82 ppbv. These time‐resolved measurements resolve the rapid diurnal variation of glyoxal, and indicate the onset of volatile organic compound (VOC) oxidation about 1hr after sunrise. The atmospheric lifetime of glyoxal is determined to be 1.3 hr for overhead sun conditions. Then elevated glyoxal levels indicate a persistently active VOC chemistry during most of the day. Glyoxal forms from the oxidation of numerous VOCs, which foster the formation of ‘photochemical smog’ including ozone and aerosol particles; atmospheric levels are essentially unaffected by direct vehicle emissions in Mexico City. Satellite measurements of glyoxal seem feasible, making possible the better identification of photochemical hot spots in the Earth's atmosphere.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2005GL022616</doi><tpages>4</tpages></addata></record> |
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| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Absorption spectroscopy Aerosols Atmospheres Atmospherics Daytime Diurnal variations Earth atmosphere Earth sciences Earth, ocean, space Exact sciences and technology Geophysics Mixing ratios Oxidation Ozone Satellites Smog Sun Sunrise Vehicles Volatile Organic Compounds |
| title | DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air |
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