Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface
The Arctic is warming two to three times faster than the global average, and the role of aerosols is not well constrained. Aerosol number concentrations can be very low in remote environments, rendering local cloud radiative properties highly sensitive to available aerosol. The composition and sourc...
Published in: | Environmental Research Letters |
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Online Access: | https://hdl.handle.net/11250/2984614 https://doi.org/10.1088/1748-9326/ac444b |
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ftnilu:oai:nilu.brage.unit.no:11250/2984614 2023-07-30T04:00:26+02:00 Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface Moschos, Vaios Schmale, Julia Aas, Wenche Becagli, Silvia Calzolai, Giulia Eleftheriadis, Konstantinos Moffett, Claire E. Schnelle-Kreis, Jürgen Severi, Mirko Sharma, Sangeeta Skov, Henrik Vestenius, Mika Zhang, Wendy Hakola, Hannele Hellén, Heidi Huang, Lin Jaffrezo, Jean-Luc Massling, Andreas Nøjgaard, Jacob Klenø Petäjä, Tuukka Popovicheva, Olga Sheesley, Rebecca J. Traversi, Rita Yttri, Karl Espen Prévôt, André S. H. Baltensperger, Urs El Haddad, Imad 2022 application/pdf https://hdl.handle.net/11250/2984614 https://doi.org/10.1088/1748-9326/ac444b eng eng Miljødirektoratet: * EC/H2020/689443 NILU: 115058 NILU: 121002 Environmental Research Letters. 2022, 17, 034032. urn:issn:1748-9326 https://hdl.handle.net/11250/2984614 https://doi.org/10.1088/1748-9326/ac444b cristin:2008130 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Canadian 2022 Crown copyright 14 17 Environmental Research Letters 034032 Zeppelinobservatoriet Peer reviewed Journal article 2022 ftnilu https://doi.org/10.1088/1748-9326/ac444b 2023-07-08T19:54:04Z The Arctic is warming two to three times faster than the global average, and the role of aerosols is not well constrained. Aerosol number concentrations can be very low in remote environments, rendering local cloud radiative properties highly sensitive to available aerosol. The composition and sources of the climate-relevant aerosols, affecting Arctic cloud formation and altering their microphysics, remain largely elusive due to a lack of harmonized concurrent multi-component, multi-site, and multi-season observations. Here, we present a dataset on the overall chemical composition and seasonal variability of the Arctic total particulate matter (with a size cut at 10 μm, PM10, or without any size cut) at eight observatories representing all Arctic sectors. Our holistic observational approach includes the Russian Arctic, a significant emission source area with less dedicated aerosol monitoring, and extends beyond the more traditionally studied summer period and black carbon/sulfate or fine-mode pollutants. The major airborne Arctic PM components in terms of dry mass are sea salt, secondary (non-sea-salt, nss) sulfate, and organic aerosol (OA), with minor contributions from elemental carbon (EC) and ammonium. We observe substantial spatiotemporal variability in component ratios, such as EC/OA, ammonium/nss-sulfate and OA/nss-sulfate, and fractional contributions to PM. When combined with component-specific back-trajectory analysis to identify marine or terrestrial origins, as well as the companion study by Moschos et al 2022 Nat. Geosci. focusing on OA, the composition analysis provides policy-guiding observational insights into sector-based differences in natural and anthropogenic Arctic aerosol sources. In this regard, we first reveal major source regions of inner-Arctic sea salt, biogenic sulfate, and natural organics, and highlight an underappreciated wintertime source of primary carbonaceous aerosols (EC and OA) in West Siberia, potentially associated with the oil and gas sector. The presented dataset can ... Article in Journal/Newspaper Arctic black carbon Siberia NILU – Norwegian Institute for Air Research: NILU Brage Arctic Environmental Research Letters 17 3 034032 |
institution |
Open Polar |
collection |
NILU – Norwegian Institute for Air Research: NILU Brage |
op_collection_id |
ftnilu |
language |
English |
topic |
Zeppelinobservatoriet |
spellingShingle |
Zeppelinobservatoriet Moschos, Vaios Schmale, Julia Aas, Wenche Becagli, Silvia Calzolai, Giulia Eleftheriadis, Konstantinos Moffett, Claire E. Schnelle-Kreis, Jürgen Severi, Mirko Sharma, Sangeeta Skov, Henrik Vestenius, Mika Zhang, Wendy Hakola, Hannele Hellén, Heidi Huang, Lin Jaffrezo, Jean-Luc Massling, Andreas Nøjgaard, Jacob Klenø Petäjä, Tuukka Popovicheva, Olga Sheesley, Rebecca J. Traversi, Rita Yttri, Karl Espen Prévôt, André S. H. Baltensperger, Urs El Haddad, Imad Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface |
topic_facet |
Zeppelinobservatoriet |
description |
The Arctic is warming two to three times faster than the global average, and the role of aerosols is not well constrained. Aerosol number concentrations can be very low in remote environments, rendering local cloud radiative properties highly sensitive to available aerosol. The composition and sources of the climate-relevant aerosols, affecting Arctic cloud formation and altering their microphysics, remain largely elusive due to a lack of harmonized concurrent multi-component, multi-site, and multi-season observations. Here, we present a dataset on the overall chemical composition and seasonal variability of the Arctic total particulate matter (with a size cut at 10 μm, PM10, or without any size cut) at eight observatories representing all Arctic sectors. Our holistic observational approach includes the Russian Arctic, a significant emission source area with less dedicated aerosol monitoring, and extends beyond the more traditionally studied summer period and black carbon/sulfate or fine-mode pollutants. The major airborne Arctic PM components in terms of dry mass are sea salt, secondary (non-sea-salt, nss) sulfate, and organic aerosol (OA), with minor contributions from elemental carbon (EC) and ammonium. We observe substantial spatiotemporal variability in component ratios, such as EC/OA, ammonium/nss-sulfate and OA/nss-sulfate, and fractional contributions to PM. When combined with component-specific back-trajectory analysis to identify marine or terrestrial origins, as well as the companion study by Moschos et al 2022 Nat. Geosci. focusing on OA, the composition analysis provides policy-guiding observational insights into sector-based differences in natural and anthropogenic Arctic aerosol sources. In this regard, we first reveal major source regions of inner-Arctic sea salt, biogenic sulfate, and natural organics, and highlight an underappreciated wintertime source of primary carbonaceous aerosols (EC and OA) in West Siberia, potentially associated with the oil and gas sector. The presented dataset can ... |
format |
Article in Journal/Newspaper |
author |
Moschos, Vaios Schmale, Julia Aas, Wenche Becagli, Silvia Calzolai, Giulia Eleftheriadis, Konstantinos Moffett, Claire E. Schnelle-Kreis, Jürgen Severi, Mirko Sharma, Sangeeta Skov, Henrik Vestenius, Mika Zhang, Wendy Hakola, Hannele Hellén, Heidi Huang, Lin Jaffrezo, Jean-Luc Massling, Andreas Nøjgaard, Jacob Klenø Petäjä, Tuukka Popovicheva, Olga Sheesley, Rebecca J. Traversi, Rita Yttri, Karl Espen Prévôt, André S. H. Baltensperger, Urs El Haddad, Imad |
author_facet |
Moschos, Vaios Schmale, Julia Aas, Wenche Becagli, Silvia Calzolai, Giulia Eleftheriadis, Konstantinos Moffett, Claire E. Schnelle-Kreis, Jürgen Severi, Mirko Sharma, Sangeeta Skov, Henrik Vestenius, Mika Zhang, Wendy Hakola, Hannele Hellén, Heidi Huang, Lin Jaffrezo, Jean-Luc Massling, Andreas Nøjgaard, Jacob Klenø Petäjä, Tuukka Popovicheva, Olga Sheesley, Rebecca J. Traversi, Rita Yttri, Karl Espen Prévôt, André S. H. Baltensperger, Urs El Haddad, Imad |
author_sort |
Moschos, Vaios |
title |
Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface |
title_short |
Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface |
title_full |
Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface |
title_fullStr |
Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface |
title_full_unstemmed |
Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface |
title_sort |
elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the arctic land surface |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/2984614 https://doi.org/10.1088/1748-9326/ac444b |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic black carbon Siberia |
genre_facet |
Arctic black carbon Siberia |
op_source |
14 17 Environmental Research Letters 034032 |
op_relation |
Miljødirektoratet: * EC/H2020/689443 NILU: 115058 NILU: 121002 Environmental Research Letters. 2022, 17, 034032. urn:issn:1748-9326 https://hdl.handle.net/11250/2984614 https://doi.org/10.1088/1748-9326/ac444b cristin:2008130 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Canadian 2022 Crown copyright |
op_doi |
https://doi.org/10.1088/1748-9326/ac444b |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
3 |
container_start_page |
034032 |
_version_ |
1772810925820084224 |