eprintid: 14364 rev_number: 21 eprint_status: archive userid: 2 dir: disk0/00/01/43/64 datestamp: 2017-02-03 10:26:11 lastmod: 2021-08-27 17:28:31 status_changed: 2017-02-03 10:26:11 type: article metadata_visibility: show item_issues_count: 0 creators_name: Winiger, P. creators_name: Andersson, A. creators_name: Eckhardt, S. creators_name: Stohl, A. creators_name: Semiletov, I.P. creators_name: Dudarev, O.V. creators_name: Charkin, A. creators_name: Shakhova, N. creators_name: Klimont, Z. creators_name: Heyes, C. creators_name: Gustafsson, Ö. creators_id: 1473 creators_id: 1540 creators_orcid: 0000-0003-2630-198X creators_orcid: 0000-0001-5254-493X title: Siberian Arctic black carbon sources constrained by model and observation ispublished: pub divisions: prog_air divisions: prog_mag keywords: Arctic haze, atmospheric transport modeling, emission inventory, carbon isotopes, climate change abstract: Black carbon (BC) in haze and deposited on snow and ice can have strong effects on the radiative balance of the Arctic. There is a geographic bias in Arctic BC studies toward the Atlantic sector, with lack of observational constraints for the extensive Russian Siberian Arctic, spanning nearly half of the circum-Arctic. Here, 2 y of observations at Tiksi (East Siberian Arctic) establish a strong seasonality in both BC concentrations (8 ng⋅m−3 to 302 ng⋅m−3) and dual-isotope–constrained sources (19 to 73% contribution from biomass burning). Comparisons between observations and a dispersion model, coupled to an anthropogenic emissions inventory and a fire emissions inventory, give mixed results. In the European Arctic, this model has proven to simulate BC concentrations and source contributions well. However, the model is less successful in reproducing BC concentrations and sources for the Russian Arctic. Using a Bayesian approach, we show that, in contrast to earlier studies, contributions from gas flaring (6%), power plants (9%), and open fires (12%) are relatively small, with the major sources instead being domestic (35%) and transport (38%). The observation-based evaluation of reported emissions identifies errors in spatial allocation of BC sources in the inventory and highlights the importance of improving emission distribution and source attribution, to develop reliable mitigation strategies for efficient reduction of BC impact on the Russian Arctic, one of the fastest-warming regions on Earth. date: 2017-02 date_type: published publisher: National Academy of Sciences id_number: 10.1073/pnas.1613401114 creators_browse_id: 159 creators_browse_id: 123 full_text_status: public publication: Proceedings of the National Academy of Sciences volume: 114 number: 7 pagerange: E1054-E1061 refereed: TRUE issn: 0027-8424 projects: Isotope forensics meets biogeochemistry – linking sources and sinks of organic contaminants by compound specific isotope investigation (CSI:ENVIRONMENT, FP7 264329) projects: Cryosphere-Carbon on Top of the Earth (CC-Top):Decreasing Uncertainties of Thawing Permafrost and Collapsing Methane Hydrates in the Arctic (CC-TOP, H2020 695331) projects: Evaluating the Climate and Air Quality Impacts of Short-Lived Pollutants (ECLIPSE, FP7 282688) coversheets_dirty: FALSE fp7_project: yes fp7_project_id: info:eu-repo/grantAgreement/EC/FP7/264329/EU//CSI:ENVIRONMENT; info:eu-repo/grantAgreement/EC/H2020/695331/EU//CC-TOP; info:eu-repo/grantAgreement/EC/FP7/282688/EU//ECLIPSE fp7_type: info:eu-repo/semantics/article access_rights: info:eu-repo/semantics/embargoedAccess citation: Winiger, P., Andersson, A., Eckhardt, S., Stohl, A., Semiletov, I.P., Dudarev, O.V., Charkin, A., Shakhova, N., et al. (2017). Siberian Arctic black carbon sources constrained by model and observation. Proceedings of the National Academy of Sciences 114 (7) E1054-E1061. 10.1073/pnas.1613401114 . document_url: https://pure.iiasa.ac.at/id/eprint/14364/1/PNAS-2017-Winiger-E1054-61.pdf