Biomass burning dominates brown carbon absorption in the rural southeastern United States
Brown carbon aerosol consists of light‐absorbing organic particulate matter with wavelength‐dependent absorption. Aerosol optical extinction, absorption, size distributions, and chemical composition were measured in rural Alabama during summer 2013. The field site was well located to examine sources...
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| Veröffentlicht in: | Geophysical research letters 2015-01, Vol.42 (2), p.653-664 |
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| creator | Washenfelder, R. A. Attwood, A. R. Brock, C. A. Guo, H. Xu, L. Weber, R. J. Ng, N. L. Allen, H. M. Ayres, B. R. Baumann, K. Cohen, R. C. Draper, D. C. Duffey, K. C. Edgerton, E. Fry, J. L. Hu, W. W. Jimenez, J. L. Palm, B. B. Romer, P. Stone, E. A. Wooldridge, P. J. Brown, S. S. |
| description | Brown carbon aerosol consists of light‐absorbing organic particulate matter with wavelength‐dependent absorption. Aerosol optical extinction, absorption, size distributions, and chemical composition were measured in rural Alabama during summer 2013. The field site was well located to examine sources of brown carbon aerosol, with influence by high biogenic organic aerosol concentrations, pollution from two nearby cities, and biomass burning aerosol. We report the optical closure between measured dry aerosol extinction at 365 nm and calculated extinction from composition and size distribution, showing agreement within experiment uncertainties. We find that aerosol optical extinction is dominated by scattering, with single‐scattering albedo values of 0.94 ± 0.02. Black carbon aerosol accounts for 91 ± 9% of the total carbonaceous aerosol absorption at 365 nm, while organic aerosol accounts for 9 ± 9%. The majority of brown carbon aerosol mass is associated with biomass burning, with smaller contributions from biogenically derived secondary organic aerosol.
Key Points
Aerosol optical extinction in the southeastern U.S. is dominated by scattering
Black carbon is a more significant absorber than organic carbon at 365 nm
Biomass burning makes the largest contribution to organic aerosol absorption |
| doi_str_mv | 10.1002/2014GL062444 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_1402182</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3594166081</sourcerecordid><originalsourceid>FETCH-LOGICAL-c6016-86e1c9858a495839eab8dd1dcc088acacb270e07277438a296e414cb0d98b1533</originalsourceid><addsrcrecordid>eNqNkU9vFSEUxYnRxGd15weY6MaFo5f_sNRqX9WXmqhN1Q1hGGqp8-AJTGq_vbyMMcZF4-qeS36HHDgIPcTwDAOQ5wQwW29AEMbYLbTCmrFeAcjbaAWgmyZS3EX3SrkEAAoUr9CXlyFtbSndMOcY4rduTNsQbfXtJKer2DmbhxQ7O5SUdzU0GWJXL3yX52ynrqS5LbZUn2N3GkP1Y_ex7v330Z1zOxX_4Pc8QKdHrz8dHveb9-s3hy82vROARa-Ex04rrizTXFHt7aDGEY_OgVLWWTcQCR4kkZJRZYkWnmHmBhi1GjCn9AA9Wu5NpQZTXIvgLlyK0btqMAOCFWnQkwXa5fRj9qWabSjOT5ONPs3FYCG0UlIx-T-oIlxwrRr6-B_0MrVvbK81BIQGxYUWN1FYcC5BAt8nfLpQLqdSsj83uxy2Nl8bDGbfrvm73YaTBb8Kk7--kTXrDxtOOOyT9IsptL5-_jHZ_N0ISSU3Zydr8-4roW9PPr8yZ_QXUfCyZg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1655707052</pqid></control><display><type>article</type><title>Biomass burning dominates brown carbon absorption in the rural southeastern United States</title><source>Wiley Free Content</source><source>Wiley-Blackwell AGU Digital Library</source><source>Wiley Online Library Journals Frontfile Complete</source><source>EZB-FREE-00999 freely available EZB journals</source><creator>Washenfelder, R. A. ; Attwood, A. R. ; Brock, C. A. ; Guo, H. ; Xu, L. ; Weber, R. J. ; Ng, N. L. ; Allen, H. M. ; Ayres, B. R. ; Baumann, K. ; Cohen, R. C. ; Draper, D. C. ; Duffey, K. C. ; Edgerton, E. ; Fry, J. L. ; Hu, W. W. ; Jimenez, J. L. ; Palm, B. B. ; Romer, P. ; Stone, E. A. ; Wooldridge, P. J. ; Brown, S. S.</creator><creatorcontrib>Washenfelder, R. A. ; Attwood, A. R. ; Brock, C. A. ; Guo, H. ; Xu, L. ; Weber, R. J. ; Ng, N. L. ; Allen, H. M. ; Ayres, B. R. ; Baumann, K. ; Cohen, R. C. ; Draper, D. C. ; Duffey, K. C. ; Edgerton, E. ; Fry, J. L. ; Hu, W. W. ; Jimenez, J. L. ; Palm, B. B. ; Romer, P. ; Stone, E. A. ; Wooldridge, P. J. ; Brown, S. S.</creatorcontrib><description>Brown carbon aerosol consists of light‐absorbing organic particulate matter with wavelength‐dependent absorption. Aerosol optical extinction, absorption, size distributions, and chemical composition were measured in rural Alabama during summer 2013. The field site was well located to examine sources of brown carbon aerosol, with influence by high biogenic organic aerosol concentrations, pollution from two nearby cities, and biomass burning aerosol. We report the optical closure between measured dry aerosol extinction at 365 nm and calculated extinction from composition and size distribution, showing agreement within experiment uncertainties. We find that aerosol optical extinction is dominated by scattering, with single‐scattering albedo values of 0.94 ± 0.02. Black carbon aerosol accounts for 91 ± 9% of the total carbonaceous aerosol absorption at 365 nm, while organic aerosol accounts for 9 ± 9%. The majority of brown carbon aerosol mass is associated with biomass burning, with smaller contributions from biogenically derived secondary organic aerosol.
Key Points
Aerosol optical extinction in the southeastern U.S. is dominated by scattering
Black carbon is a more significant absorber than organic carbon at 365 nm
Biomass burning makes the largest contribution to organic aerosol absorption</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/2014GL062444</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Absorption ; Aerosol absorption ; Aerosol concentrations ; Aerosol extinction ; aerosol optical properties ; Aerosols ; Airborne particulates ; Albedo ; atmospheric aerosol ; Biomass ; Biomass burning ; Black carbon ; Black carbon aerosols ; brown carbon ; Burning ; Carbon ; Carbon sources ; cavity-enhanced spectroscopy ; Chemical composition ; Concentration (composition) ; Extinction ; Geophysics ; Organic chemistry ; Particle size distribution ; Particulate matter ; Particulate organic matter ; Rural ; Scattering ; Secondary aerosols ; Size distribution ; Southern Oxidant and Aerosol Study ; Suspended particulate matter ; Wavelength</subject><ispartof>Geophysical research letters, 2015-01, Vol.42 (2), p.653-664</ispartof><rights>2015. American Geophysical Union. All Rights Reserved.</rights><rights>Copyright Blackwell Publishing Ltd. Jan 2015</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6016-86e1c9858a495839eab8dd1dcc088acacb270e07277438a296e414cb0d98b1533</citedby><cites>FETCH-LOGICAL-c6016-86e1c9858a495839eab8dd1dcc088acacb270e07277438a296e414cb0d98b1533</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2014GL062444$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2014GL062444$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,1427,11493,27901,27902,45550,45551,46384,46443,46808,46867</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1402182$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Washenfelder, R. A.</creatorcontrib><creatorcontrib>Attwood, A. R.</creatorcontrib><creatorcontrib>Brock, C. A.</creatorcontrib><creatorcontrib>Guo, H.</creatorcontrib><creatorcontrib>Xu, L.</creatorcontrib><creatorcontrib>Weber, R. J.</creatorcontrib><creatorcontrib>Ng, N. L.</creatorcontrib><creatorcontrib>Allen, H. M.</creatorcontrib><creatorcontrib>Ayres, B. R.</creatorcontrib><creatorcontrib>Baumann, K.</creatorcontrib><creatorcontrib>Cohen, R. C.</creatorcontrib><creatorcontrib>Draper, D. C.</creatorcontrib><creatorcontrib>Duffey, K. C.</creatorcontrib><creatorcontrib>Edgerton, E.</creatorcontrib><creatorcontrib>Fry, J. L.</creatorcontrib><creatorcontrib>Hu, W. W.</creatorcontrib><creatorcontrib>Jimenez, J. L.</creatorcontrib><creatorcontrib>Palm, B. B.</creatorcontrib><creatorcontrib>Romer, P.</creatorcontrib><creatorcontrib>Stone, E. A.</creatorcontrib><creatorcontrib>Wooldridge, P. J.</creatorcontrib><creatorcontrib>Brown, S. S.</creatorcontrib><title>Biomass burning dominates brown carbon absorption in the rural southeastern United States</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>Brown carbon aerosol consists of light‐absorbing organic particulate matter with wavelength‐dependent absorption. Aerosol optical extinction, absorption, size distributions, and chemical composition were measured in rural Alabama during summer 2013. The field site was well located to examine sources of brown carbon aerosol, with influence by high biogenic organic aerosol concentrations, pollution from two nearby cities, and biomass burning aerosol. We report the optical closure between measured dry aerosol extinction at 365 nm and calculated extinction from composition and size distribution, showing agreement within experiment uncertainties. We find that aerosol optical extinction is dominated by scattering, with single‐scattering albedo values of 0.94 ± 0.02. Black carbon aerosol accounts for 91 ± 9% of the total carbonaceous aerosol absorption at 365 nm, while organic aerosol accounts for 9 ± 9%. The majority of brown carbon aerosol mass is associated with biomass burning, with smaller contributions from biogenically derived secondary organic aerosol.
Key Points
Aerosol optical extinction in the southeastern U.S. is dominated by scattering
Black carbon is a more significant absorber than organic carbon at 365 nm
Biomass burning makes the largest contribution to organic aerosol absorption</description><subject>Absorption</subject><subject>Aerosol absorption</subject><subject>Aerosol concentrations</subject><subject>Aerosol extinction</subject><subject>aerosol optical properties</subject><subject>Aerosols</subject><subject>Airborne particulates</subject><subject>Albedo</subject><subject>atmospheric aerosol</subject><subject>Biomass</subject><subject>Biomass burning</subject><subject>Black carbon</subject><subject>Black carbon aerosols</subject><subject>brown carbon</subject><subject>Burning</subject><subject>Carbon</subject><subject>Carbon sources</subject><subject>cavity-enhanced spectroscopy</subject><subject>Chemical composition</subject><subject>Concentration (composition)</subject><subject>Extinction</subject><subject>Geophysics</subject><subject>Organic chemistry</subject><subject>Particle size distribution</subject><subject>Particulate matter</subject><subject>Particulate organic matter</subject><subject>Rural</subject><subject>Scattering</subject><subject>Secondary aerosols</subject><subject>Size distribution</subject><subject>Southern Oxidant and Aerosol Study</subject><subject>Suspended particulate matter</subject><subject>Wavelength</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkU9vFSEUxYnRxGd15weY6MaFo5f_sNRqX9WXmqhN1Q1hGGqp8-AJTGq_vbyMMcZF4-qeS36HHDgIPcTwDAOQ5wQwW29AEMbYLbTCmrFeAcjbaAWgmyZS3EX3SrkEAAoUr9CXlyFtbSndMOcY4rduTNsQbfXtJKer2DmbhxQ7O5SUdzU0GWJXL3yX52ynrqS5LbZUn2N3GkP1Y_ex7v330Z1zOxX_4Pc8QKdHrz8dHveb9-s3hy82vROARa-Ex04rrizTXFHt7aDGEY_OgVLWWTcQCR4kkZJRZYkWnmHmBhi1GjCn9AA9Wu5NpQZTXIvgLlyK0btqMAOCFWnQkwXa5fRj9qWabSjOT5ONPs3FYCG0UlIx-T-oIlxwrRr6-B_0MrVvbK81BIQGxYUWN1FYcC5BAt8nfLpQLqdSsj83uxy2Nl8bDGbfrvm73YaTBb8Kk7--kTXrDxtOOOyT9IsptL5-_jHZ_N0ISSU3Zydr8-4roW9PPr8yZ_QXUfCyZg</recordid><startdate>20150128</startdate><enddate>20150128</enddate><creator>Washenfelder, R. A.</creator><creator>Attwood, A. R.</creator><creator>Brock, C. A.</creator><creator>Guo, H.</creator><creator>Xu, L.</creator><creator>Weber, R. J.</creator><creator>Ng, N. L.</creator><creator>Allen, H. M.</creator><creator>Ayres, B. R.</creator><creator>Baumann, K.</creator><creator>Cohen, R. C.</creator><creator>Draper, D. C.</creator><creator>Duffey, K. C.</creator><creator>Edgerton, E.</creator><creator>Fry, J. L.</creator><creator>Hu, W. W.</creator><creator>Jimenez, J. L.</creator><creator>Palm, B. B.</creator><creator>Romer, P.</creator><creator>Stone, E. A.</creator><creator>Wooldridge, P. J.</creator><creator>Brown, S. S.</creator><general>Blackwell Publishing Ltd</general><general>John Wiley & Sons, Inc</general><general>American Geophysical Union (AGU)</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>7TV</scope><scope>7UA</scope><scope>C1K</scope><scope>7TB</scope><scope>OTOTI</scope></search><sort><creationdate>20150128</creationdate><title>Biomass burning dominates brown carbon absorption in the rural southeastern United States</title><author>Washenfelder, R. A. ; Attwood, A. R. ; Brock, C. A. ; Guo, H. ; Xu, L. ; Weber, R. J. ; Ng, N. L. ; Allen, H. M. ; Ayres, B. R. ; Baumann, K. ; Cohen, R. C. ; Draper, D. C. ; Duffey, K. C. ; Edgerton, E. ; Fry, J. L. ; Hu, W. W. ; Jimenez, J. L. ; Palm, B. B. ; Romer, P. ; Stone, E. A. ; Wooldridge, P. J. ; Brown, S. 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S.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>OSTI.GOV</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Washenfelder, R. A.</au><au>Attwood, A. R.</au><au>Brock, C. A.</au><au>Guo, H.</au><au>Xu, L.</au><au>Weber, R. J.</au><au>Ng, N. L.</au><au>Allen, H. M.</au><au>Ayres, B. R.</au><au>Baumann, K.</au><au>Cohen, R. C.</au><au>Draper, D. C.</au><au>Duffey, K. C.</au><au>Edgerton, E.</au><au>Fry, J. L.</au><au>Hu, W. W.</au><au>Jimenez, J. L.</au><au>Palm, B. B.</au><au>Romer, P.</au><au>Stone, E. A.</au><au>Wooldridge, P. J.</au><au>Brown, S. S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biomass burning dominates brown carbon absorption in the rural southeastern United States</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2015-01-28</date><risdate>2015</risdate><volume>42</volume><issue>2</issue><spage>653</spage><epage>664</epage><pages>653-664</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>Brown carbon aerosol consists of light‐absorbing organic particulate matter with wavelength‐dependent absorption. Aerosol optical extinction, absorption, size distributions, and chemical composition were measured in rural Alabama during summer 2013. The field site was well located to examine sources of brown carbon aerosol, with influence by high biogenic organic aerosol concentrations, pollution from two nearby cities, and biomass burning aerosol. We report the optical closure between measured dry aerosol extinction at 365 nm and calculated extinction from composition and size distribution, showing agreement within experiment uncertainties. We find that aerosol optical extinction is dominated by scattering, with single‐scattering albedo values of 0.94 ± 0.02. Black carbon aerosol accounts for 91 ± 9% of the total carbonaceous aerosol absorption at 365 nm, while organic aerosol accounts for 9 ± 9%. The majority of brown carbon aerosol mass is associated with biomass burning, with smaller contributions from biogenically derived secondary organic aerosol.
Key Points
Aerosol optical extinction in the southeastern U.S. is dominated by scattering
Black carbon is a more significant absorber than organic carbon at 365 nm
Biomass burning makes the largest contribution to organic aerosol absorption</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/2014GL062444</doi><tpages>12</tpages></addata></record> |
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| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; EZB-FREE-00999 freely available EZB journals |
| subjects | Absorption Aerosol absorption Aerosol concentrations Aerosol extinction aerosol optical properties Aerosols Airborne particulates Albedo atmospheric aerosol Biomass Biomass burning Black carbon Black carbon aerosols brown carbon Burning Carbon Carbon sources cavity-enhanced spectroscopy Chemical composition Concentration (composition) Extinction Geophysics Organic chemistry Particle size distribution Particulate matter Particulate organic matter Rural Scattering Secondary aerosols Size distribution Southern Oxidant and Aerosol Study Suspended particulate matter Wavelength |
| title | Biomass burning dominates brown carbon absorption in the rural southeastern United States |
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