| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21c.sid.inpe.br (namespace prefix: upn:3Q3U5H8) | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/42HD5BS | |||
| Repository | sid.inpe.br/mtc-m21c/2020/05.23.20.46 | |||
| Last Update | 2020:05.23.20.46.14 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2020/05.23.20.46.14 | |||
| Metadata Last Update | 2022:01.04.01.35.09 (UTC) administrator | |||
| DOI | 10.5194/acp-20-5309-2020 | |||
| ISSN | 1680-7316 1680-7324 | |||
| Citation Key | MorganABDFLLJHLAC:2020:TrAgBi | |||
| Title | Transformation and ageing of biomass burning carbonaceous aerosol over tropical South America from aircraft in situ measurements during SAMBBA  | |||
| Year | 2020 | |||
| Month | May | |||
| Access Date | 2025, Dec. 07 | |||
| Type of Work | conference paper | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 4274 KiB | |||
| 2. Context | ||||
| Author | 1 Morgan, William T. 2 Allan, James D. 3 Bauguitte, Stéphane 4 Darbyshire, Eoghan 5 Flynn, Michael J. 6 Lee, James 7 Liu, Dantong 8 Johnson, Ben 9 Haywood, Jim 10 Longo, Karla Maria 11 Artaxo, Paulo E. 12 Coe, Hugh | |||
| Resume Identifier | 1 2 3 4 5 6 7 8 9 10 8JMKD3MGP5W/3C9JHKQ | |||
| Group | 1 2 3 4 5 6 7 8 9 10 DIDMD-CGCPT-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 University of Manchester 2 University of Manchester 3 Cranfield University 4 University of Manchester 5 University of Manchester 6 University of York 7 University of Manchester 8 Met Office 9 Met Office 10 Instituto Nacional de Pesquisas Espaciais (INPE) 11 Universidade de São Paulo (USP) 12 University of Manchester | |||
| Author e-Mail Address | 1 2 3 4 5 6 7 8 9 10 karla.longo@inpe.br | |||
| Journal | Atmospheric Chemistry and Physics | |||
| Volume | 20 | |||
| Number | 9 | |||
| Pages | 5309-5326 | |||
| Secondary Mark | A1_MEDICINA_II A1_INTERDISCIPLINAR A1_GEOCIÊNCIAS A1_ENGENHARIAS_III A1_ENGENHARIAS_I A1_CIÊNCIAS_AMBIENTAIS A1_CIÊNCIAS_AGRÁRIAS_I A2_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA A2_ENGENHARIAS_II A2_ASTRONOMIA_/_FÍSICA | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 upn:3Q3U5H8 | |||
| History (UTC) | 2020-05-23 20:46:14 :: simone -> administrator :: 2020-05-23 20:46:15 :: administrator -> simone :: 2020 2020-05-23 20:49:49 :: simone -> administrator :: 2020 2022-01-04 01:35:09 :: administrator -> simone :: 2020 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | We present a range of airborne in situ observations of biomass burning carbonaceous aerosol over tropical South America, including a case study of a large tropical forest wildfire and a series of regional survey flights across the Brazilian Amazon and Cerrado. The study forms part of the South American Biomass Burning Analysis (SAMBBA) project, which was conducted during September and October 2012. We find limited evidence for net increases in aerosol mass through atmospheric ageing combined with substantial changes in the chemical properties of organic aerosol (OA). Oxidation of the OA increases significantly and rapidly on the scale of 2.5-3 h based on our case study analysis and is consistent with secondary organic aerosol production. The observations of limited net enhancement in OA coupled with such changes in chemical composition imply that evaporation of OA is also occurring to balance these changes. We observe significant coatings on black carbon particles at source, but with limited changes with ageing in both particle core size and coating thickness. We quantify variability in the ratio of OA to carbon monoxide across our study as a key parameter representing both initial fire conditions and an indicator of net aerosol production with atmospheric ageing. We observe ratios of 0.075-0.13 mu g sm(-3) ppbv(-1) in the west of our study region over the Amazon tropical forest in air masses less influenced by precipitation and a value of 0.095 mu g sm(-3) ppbv(-1) over the Cerrado environment in the east (where sm(-3) refers to standard metre cubed). Such values are consistent with emission factors used by numerical models to represent biomass burning OA emissions. Black carbon particle core sizes typically range from mean mass diameters of 250 to 290 nm, while coating thicknesses range from 40 to 110 nm in air masses less influenced by precipitation. The primary driver of the variability we observe appears to be related to changes at the initial fire source. A key lesson from our study is that simply aggregating our observations as a function of atmospheric ageing would have been misleading due to the complex nature of the regional aerosol and its drivers, due to the many conflating and competing factors that are present. Our study explores and quantifies key uncertainties in the evolution of biomass burning aerosol at both near-field and regional scales. Our results suggest that the initial conditions of the fire are the primary driver of carbonaceous aerosol physical and chemical properties over tropical South America, aside from significant oxidation of OA during atmospheric ageing. Such findings imply that uncertainties in the magnitude of the aerosol burden and its impact on weather, climate, health and natural ecosystems most likely lie in quantifying emission sources, alongside atmospheric dispersion, transport and removal rather than chemical enhancements in mass. | |||
| Area | MET | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > Transformation and ageing... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URI | upn:3Q3U5H8:8JMKD3MGP3W34R/42HD5BS | |||
| data URL | http://urlib.net/ibi/8JMKD3MGP3W34R/42HD5BS | |||
| zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34R/42HD5BS | |||
| Language | en | |||
| Target File | morgan_transformation.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | allowpublisher allowfinaldraft | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/43SKC35 | |||
| Citing Item List | sid.inpe.br/bibdigital/2021/01.01.17.20 - 26 sid.inpe.br/mtc-m21/2012/07.13.14.53.10 - 11 | |||
| Dissemination | WEBSCI; PORTALCAPES; AGU; SCOPUS. | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||