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Sökning: L773:0280 6509 > (2010-2014) > Sources of increase...

  • Friberg, JohanLund University,Lunds universitet,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Kärnfysik,Fysiska institutionen,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH,Nuclear physics,Department of Physics,Faculty of Engineering, LTH (författare)

Sources of increase in lowermost stratospheric sulphurous and carbonaceous aerosol background concentrations during 1999-2008 derived from CARIBIC flights

  • Artikel/kapitelEngelska2014

Förlag, utgivningsår, omfång ...

  • 2014-01-01
  • Stockholm University Press,2014
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:lup.lub.lu.se:ffa2cc88-7600-4e9c-a304-fb1033296566
  • https://lup.lub.lu.se/record/8594417URI
  • https://doi.org/10.3402/tellusb.v66.23428DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:art swepub-publicationtype
  • Ämneskategori:ref swepub-contenttype

Anmärkningar

  • This study focuses on sulphurous and carbonaceous aerosol, the major constituents of particulate matter in the lowermost stratosphere (LMS), based on in situ measurements from 1999 to 2008. Aerosol particles in the size range of 0.082 mm were collected monthly during intercontinental flights with the CARIBIC passenger aircraft, presenting the first long-term study on carbonaceous aerosol in the LMS. Elemental concentrations were derived via subsequent laboratory-based ion beam analysis. The stoichiometry indicates that the sulphurous fraction is sulphate, while an O/C ratio of 0.2 indicates that the carbonaceous aerosol is organic. The concentration of the carbonaceous component corresponded on average to approximately 25% of that of the sulphurous, and could not be explained by forest fires or biomass burning, since the average mass ratio of Fe to K was 16 times higher than typical ratios in effluents from biomass burning. The data reveal increasing concentrations of particulate sulphur and carbon with a doubling of particulate sulphur from 1999 to 2008 in the northern hemisphere LMS. Periods of elevated concentrations of particulate sulphur in the LMS are linked to downward transport of aerosol from higher altitudes, using ozone as a tracer for stratospheric air. Tropical volcanic eruptions penetrating the tropical tropopause are identified as the likely cause of the particulate sulphur and carbon increase in the LMS, where entrainment of lower tropospheric air into volcanic jets and plumes could be the cause of the carbon increase.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Martinsson, BengtLund University,Lunds universitet,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Kärnfysik,Fysiska institutionen,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH,Nuclear physics,Department of Physics,Faculty of Engineering, LTH(Swepub:lu)nucl-bma (författare)
  • Andersson, SandraLund University,Lunds universitet,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)nucl-sra (författare)
  • Brenninkmeijer, Carl A. M. (författare)
  • Hermann, Markus (författare)
  • van Velthoven, Peter F. J. (författare)
  • Zahn, Andreas (författare)
  • Ergonomi och aerosolteknologiInstitutionen för designvetenskaper (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Tellus. Series B: Chemical and Physical Meteorology: Stockholm University Press0280-65091600-0889

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