Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin
Black Carbon (BC) aerosol is a major climate forcer in the Arctic. Here, we present 15 years (2001–2015) of surface observations of the aerosol absorption coefficient babs (corresponding to Equivalent BC), obtained at the Zeppelin Observatory, Ny Ålesund, Svalbard, coupled with backward transport mo...
Published in: | Geophysical Research Letters |
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Online Access: | https://hdl.handle.net/11250/2788959 https://doi.org/10.1029/2021GL092876 |
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ftnilu:oai:nilu.brage.unit.no:11250/2788959 2023-07-30T04:01:19+02:00 Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin Stathopoulos, Vasileios Evangeliou, Nikolaos Stohl, Andreas Vratolis, Stergios Matsoukas, Christos Eleftheriadis, Konstantinos 2021 application/pdf https://hdl.handle.net/11250/2788959 https://doi.org/10.1029/2021GL092876 eng eng EC/H2020/654109 EC/H2020/689443 NILU: 115045 Geophysical Research Letters. 2021, 48, e2021GL092876. urn:issn:0094-8276 https://hdl.handle.net/11250/2788959 https://doi.org/10.1029/2021GL092876 cristin:1943401 © 2021. American Geophysical Union. All Rights Reserved. 10 48 Geophysical Research Letters e2021GL092876 Peer reviewed Journal article 2021 ftnilu https://doi.org/10.1029/2021GL092876 2023-07-08T19:54:25Z Black Carbon (BC) aerosol is a major climate forcer in the Arctic. Here, we present 15 years (2001–2015) of surface observations of the aerosol absorption coefficient babs (corresponding to Equivalent BC), obtained at the Zeppelin Observatory, Ny Ålesund, Svalbard, coupled with backward transport modeling with Flexpart in order to calculate the Potential Source Contribution Function (PSCF) for BC. The observed long-term variability superimposed on a strong annual cycle is studied as a function of large-scale circulation patterns represented by monthly index values for the North Atlantic Oscillation (NAO) and the Scandinavian pattern (SCAN). We find a 35% increase of babs values at Zeppelin during the SCAN+ phase in the winter half-year compared to the SCAN+ phase but no significant difference in babs values between the NAO index phases. Both NAO and SCAN induce significant regional variability on the areas of origin of babs, mainly Siberia, Europe, and North America. publishedVersion Article in Journal/Newspaper Arctic black carbon North Atlantic North Atlantic oscillation Ny Ålesund Ny-Ålesund Svalbard Siberia NILU – Norwegian Institute for Air Research: NILU Brage Arctic Ny-Ålesund Svalbard Geophysical Research Letters 48 19 |
institution |
Open Polar |
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NILU – Norwegian Institute for Air Research: NILU Brage |
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ftnilu |
language |
English |
description |
Black Carbon (BC) aerosol is a major climate forcer in the Arctic. Here, we present 15 years (2001–2015) of surface observations of the aerosol absorption coefficient babs (corresponding to Equivalent BC), obtained at the Zeppelin Observatory, Ny Ålesund, Svalbard, coupled with backward transport modeling with Flexpart in order to calculate the Potential Source Contribution Function (PSCF) for BC. The observed long-term variability superimposed on a strong annual cycle is studied as a function of large-scale circulation patterns represented by monthly index values for the North Atlantic Oscillation (NAO) and the Scandinavian pattern (SCAN). We find a 35% increase of babs values at Zeppelin during the SCAN+ phase in the winter half-year compared to the SCAN+ phase but no significant difference in babs values between the NAO index phases. Both NAO and SCAN induce significant regional variability on the areas of origin of babs, mainly Siberia, Europe, and North America. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Stathopoulos, Vasileios Evangeliou, Nikolaos Stohl, Andreas Vratolis, Stergios Matsoukas, Christos Eleftheriadis, Konstantinos |
spellingShingle |
Stathopoulos, Vasileios Evangeliou, Nikolaos Stohl, Andreas Vratolis, Stergios Matsoukas, Christos Eleftheriadis, Konstantinos Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin |
author_facet |
Stathopoulos, Vasileios Evangeliou, Nikolaos Stohl, Andreas Vratolis, Stergios Matsoukas, Christos Eleftheriadis, Konstantinos |
author_sort |
Stathopoulos, Vasileios |
title |
Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin |
title_short |
Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin |
title_full |
Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin |
title_fullStr |
Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin |
title_full_unstemmed |
Large Circulation Patterns Strongly Modulate Long-Term Variability of Arctic Black Carbon Levels and Areas of Origin |
title_sort |
large circulation patterns strongly modulate long-term variability of arctic black carbon levels and areas of origin |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2788959 https://doi.org/10.1029/2021GL092876 |
geographic |
Arctic Ny-Ålesund Svalbard |
geographic_facet |
Arctic Ny-Ålesund Svalbard |
genre |
Arctic black carbon North Atlantic North Atlantic oscillation Ny Ålesund Ny-Ålesund Svalbard Siberia |
genre_facet |
Arctic black carbon North Atlantic North Atlantic oscillation Ny Ålesund Ny-Ålesund Svalbard Siberia |
op_source |
10 48 Geophysical Research Letters e2021GL092876 |
op_relation |
EC/H2020/654109 EC/H2020/689443 NILU: 115045 Geophysical Research Letters. 2021, 48, e2021GL092876. urn:issn:0094-8276 https://hdl.handle.net/11250/2788959 https://doi.org/10.1029/2021GL092876 cristin:1943401 |
op_rights |
© 2021. American Geophysical Union. All Rights Reserved. |
op_doi |
https://doi.org/10.1029/2021GL092876 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
19 |
_version_ |
1772812069565890560 |