Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Evaluation of ground-based black carbon measurements by filter-based photometers at two Arctic sites
Show others and affiliations
Number of Authors: 15
2017 (English)In: Journal of Geophysical Research - Atmospheres, ISSN 2169-897X, E-ISSN 2169-8996, Vol. 122, no 6, 3544-3572 p.Article in journal (Refereed) Published
Abstract [en]

Long-term measurements of the light absorption coefficient (b(abs)) obtained with a particle soot absorption photometer (PSAP), b(abs) (PSAP), have been previously reported for Barrow, Alaska, and Ny-angstrom lesund, Spitsbergen, in the Arctic. However, the effects on b(abs) of other aerosol chemical species coexisting with black carbon (BC) have not been critically evaluated. Furthermore, different mass absorption cross section (MAC) values have been used to convert b(abs) to BC mass concentration (M-BC=b(abs)/MAC). We used a continuous soot monitoring system (COSMOS), which uses a heated inlet to remove volatile aerosol compounds, to measure b(abs) (b(abs) (COSMOS)) at these sites during 2012-2015. Field measurements and laboratory experiments have suggested that b(abs) (COSMOS) is affected by about 9% on average by sea-salt aerosols. M-BC values derived by COSMOS (M-BC (COSMOS)) using a MAC value obtained by our previous studies agreed to within 9% with elemental carbon concentrations at Barrow measured over 11months. b(abs) (PSAP) was higher than b(abs) (COSMOS), by 22% at Barrow (PM1) and by 43% at Ny-angstrom lesund (PM10), presumably due to the contribution of volatile aerosol species to b(abs) (PSAP). Using b(abs) (COSMOS) as a reference, we derived M-BC (PSAP) from b(abs) (PSAP) measured since 1998. We also established the seasonal variations of M-BC at these sites. Seasonally averaged M-BC (PSAP) decreased at a rate of about 0.550.30ngm(-3)yr(-1). We also compared M-BC (COSMOS) and scaled M-BC (PSAP) values with previously reported data and evaluated the degree of inconsistency in the previous data.

Place, publisher, year, edition, pages
2017. Vol. 122, no 6, 3544-3572 p.
Keyword [en]
black carbon, Arctic, light absorption, COSMOS, PSAP
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-143631DOI: 10.1002/2016JD025843ISI: 000399655200022OAI: oai:DiVA.org:su-143631DiVA: diva2:1103026
Available from: 2017-05-30 Created: 2017-05-30 Last updated: 2017-05-30Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Tunved, Peter
By organisation
Department of Environmental Science and Analytical Chemistry
In the same journal
Journal of Geophysical Research - Atmospheres
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 1 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf