Source apportionment of circum-Arctic atmospheric black carbon from isotopes and modeling

P. Winiger, T. E. Barrett, R. J. Sheesley, L. Huang, S. Sharma, L. A. Barrie, K. E. Yttri, N. Evangeliou, S. Eckhardt, A. Stohl, Z. Klimont, C. Heyes, I. P. Semiletov, O. V. Dudarev, A. Charkin, N. Shakhova, H. Holmstrand, A. Andersson, Gustafsson

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Black carbon (BC) contributes to Arctic climate warming, yet source attributions are inaccurate due to lacking observational constraints and uncertainties in emission inventories. Year-round, isotope-constrained observations reveal strong seasonal variations in BC sources with a consistent and synchronous pattern at all Arctic sites. These sources were dominated by emissions from fossil fuel combustion in the winter and by biomass burning in the summer. The annual mean source of BC to the circum-Arctic was 39 ± 10% from biomass burning. Comparison of transport-model predictions with the observations showed good agreement for BC concentrations, with larger discrepancies for (fossil/biomass burning) sources. The accuracy of simulated BC concentration, but not of origin, points to misallocations of emissions in the emission inventories. The consistency in seasonal source contributions of BC throughout the Arctic provides strong justification for targeted emission reductions to limit the impact of BC on climate warming in the Arctic and beyond.

Original languageEnglish
Article numbereaau8052
JournalScience Advances
Volume5
Issue number2
DOIs
Publication statusPublished - 13 Feb 2019

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isotopes
carbon
biomass burning
climate
fuel combustion
fossil fuels
heating
fossils
annual variations
winter
summer
predictions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Winiger, P., Barrett, T. E., Sheesley, R. J., Huang, L., Sharma, S., Barrie, L. A., ... Gustafsson (2019). Source apportionment of circum-Arctic atmospheric black carbon from isotopes and modeling. Science Advances, 5(2), [eaau8052]. https://doi.org/10.1126/sciadv.aau8052

Source apportionment of circum-Arctic atmospheric black carbon from isotopes and modeling. / Winiger, P.; Barrett, T. E.; Sheesley, R. J.; Huang, L.; Sharma, S.; Barrie, L. A.; Yttri, K. E.; Evangeliou, N.; Eckhardt, S.; Stohl, A.; Klimont, Z.; Heyes, C.; Semiletov, I. P.; Dudarev, O. V.; Charkin, A.; Shakhova, N.; Holmstrand, H.; Andersson, A.; Gustafsson.

In: Science Advances, Vol. 5, No. 2, eaau8052, 13.02.2019.

Research output: Contribution to journalArticle

Winiger, P, Barrett, TE, Sheesley, RJ, Huang, L, Sharma, S, Barrie, LA, Yttri, KE, Evangeliou, N, Eckhardt, S, Stohl, A, Klimont, Z, Heyes, C, Semiletov, IP, Dudarev, OV, Charkin, A, Shakhova, N, Holmstrand, H, Andersson, A & Gustafsson 2019, 'Source apportionment of circum-Arctic atmospheric black carbon from isotopes and modeling', Science Advances, vol. 5, no. 2, eaau8052. https://doi.org/10.1126/sciadv.aau8052
Winiger P, Barrett TE, Sheesley RJ, Huang L, Sharma S, Barrie LA et al. Source apportionment of circum-Arctic atmospheric black carbon from isotopes and modeling. Science Advances. 2019 Feb 13;5(2). eaau8052. https://doi.org/10.1126/sciadv.aau8052
Winiger, P. ; Barrett, T. E. ; Sheesley, R. J. ; Huang, L. ; Sharma, S. ; Barrie, L. A. ; Yttri, K. E. ; Evangeliou, N. ; Eckhardt, S. ; Stohl, A. ; Klimont, Z. ; Heyes, C. ; Semiletov, I. P. ; Dudarev, O. V. ; Charkin, A. ; Shakhova, N. ; Holmstrand, H. ; Andersson, A. ; Gustafsson. / Source apportionment of circum-Arctic atmospheric black carbon from isotopes and modeling. In: Science Advances. 2019 ; Vol. 5, No. 2.
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