Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign
During the ACCESS airborne campaign in July 2012, extensive boreal forest fires resulted in significant aerosol transport to the Arctic. A 10-day episode combining intense biomass burning over Siberia and low-pressure systems over the Arctic Ocean resulted in efficient transport of plumes containing...
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Ludwig-Maximilians-Universität München
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ftmuenchenepub:oai:epub.ub.uni-muenchen.de:53800 2023-05-15T14:51:17+02:00 Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign Raut, Jean-Christophe Marelle, Louis Fast, Jerome D. Thomas, Jennie L. Weinzierl, Bernadett Law, Katharine S. Berg, Larry K. Roiger, Anke Easter, Richard C. Heimerl, Katharina Onishi, Tatsuo Delanoe, Julien Schlager, Hans 2017-01-01 application/pdf https://epub.ub.uni-muenchen.de/53800/1/acp-17-10969-2017.pdf https://epub.ub.uni-muenchen.de/53800/ http://nbn-resolving.de/urn:nbn:de:bvb:19-epub-53800-3 https://doi.org/10.5194/acp-17-10969-2017 eng eng Ludwig-Maximilians-Universität München Raut, Jean-Christophe; Marelle, Louis; Fast, Jerome D.; Thomas, Jennie L.; Weinzierl, Bernadett; Law, Katharine S.; Berg, Larry K.; Roiger, Anke; Easter, Richard C.; Heimerl, Katharina; Onishi, Tatsuo; Delanoe, Julien; Schlager, Hans (2017): Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign. In: Atmospheric Chemistry and Physics, Vol. 17, Nr. 18: S. 10969-10995 [PDF, 15MB] https://epub.ub.uni-muenchen.de/53800/1/acp-17-10969-2017.pdf http://nbn-resolving.de/urn:nbn:de:bvb:19-epub-53800-3 https://epub.ub.uni-muenchen.de/53800/ doi:10.5194/acp-17-10969-2017 Atmospheric Chemistry and Physics Physik ddc:530 doc-type:article Zeitschriftenartikel NonPeerReviewed 2017 ftmuenchenepub https://doi.org/10.5194/acp-17-10969-2017 2022-04-25T12:47:34Z During the ACCESS airborne campaign in July 2012, extensive boreal forest fires resulted in significant aerosol transport to the Arctic. A 10-day episode combining intense biomass burning over Siberia and low-pressure systems over the Arctic Ocean resulted in efficient transport of plumes containing black carbon (BC) towards the Arctic, mostly in the upper troposphere (6-8 km). A combination of in situ observations (DLR Falcon aircraft), satellite analysis and WRF-Chem simulations is used to understand the vertical and horizontal transport mechanisms of BC with a focus on the role of wet removal. Between the northwestern Norwegian coast and the Svalbard archipelago, the Falcon aircraft sampled plumes with enhanced CO concentrations up to 200 ppbv and BC mixing ratios up to 25 ngkg(-1). During transport to the Arctic region, a large fraction of BC particles are scavenged by two wet deposition processes, namely wet removal by large-scale precipitation and removal in wet convective updrafts, with both processes contributing almost equally to the total accumulated deposition of BC. Our results underline that applying a finer horizontal resolution (40 instead of 100 km) improves the model performance, as it significantly reduces the overestimation of BC levels observed at a coarser resolution in the mid-troposphere. According to the simulations at 40 km, the transport efficiency of BC (TEBC) in biomass burning plumes was larger (60 %), because it was impacted by small accumulated precipitation along trajectory (1 mm). In contrast TEBC was small (< 30 %) and accumulated precipitation amounts were larger (5-10 mm) in plumes influenced by urban anthropogenic sources and flaring activities in northern Russia, resulting in transport to lower altitudes. TEBC due to large-scale precipitation is responsible for a sharp meridional gradient in the distribution of BC concentrations. Wet removal in cumulus clouds is the cause of modeled vertical gradient of TEBC, especially in the mid-latitudes, reflecting the distribution of convective precipitation, but is dominated in the Arctic region by the large-scale wet removal associated with the formation of stratocumulus clouds in the planetary boundary layer (PBL) that produce frequent drizzle. Article in Journal/Newspaper Arctic Arctic Ocean black carbon Svalbard Siberia Open Access LMU (Ludwig-Maximilians-University Munich) Arctic Arctic Ocean Svalbard Svalbard Archipelago Atmospheric Chemistry and Physics 17 18 10969 10995 |
institution |
Open Polar |
collection |
Open Access LMU (Ludwig-Maximilians-University Munich) |
op_collection_id |
ftmuenchenepub |
language |
English |
topic |
Physik ddc:530 |
spellingShingle |
Physik ddc:530 Raut, Jean-Christophe Marelle, Louis Fast, Jerome D. Thomas, Jennie L. Weinzierl, Bernadett Law, Katharine S. Berg, Larry K. Roiger, Anke Easter, Richard C. Heimerl, Katharina Onishi, Tatsuo Delanoe, Julien Schlager, Hans Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign |
topic_facet |
Physik ddc:530 |
description |
During the ACCESS airborne campaign in July 2012, extensive boreal forest fires resulted in significant aerosol transport to the Arctic. A 10-day episode combining intense biomass burning over Siberia and low-pressure systems over the Arctic Ocean resulted in efficient transport of plumes containing black carbon (BC) towards the Arctic, mostly in the upper troposphere (6-8 km). A combination of in situ observations (DLR Falcon aircraft), satellite analysis and WRF-Chem simulations is used to understand the vertical and horizontal transport mechanisms of BC with a focus on the role of wet removal. Between the northwestern Norwegian coast and the Svalbard archipelago, the Falcon aircraft sampled plumes with enhanced CO concentrations up to 200 ppbv and BC mixing ratios up to 25 ngkg(-1). During transport to the Arctic region, a large fraction of BC particles are scavenged by two wet deposition processes, namely wet removal by large-scale precipitation and removal in wet convective updrafts, with both processes contributing almost equally to the total accumulated deposition of BC. Our results underline that applying a finer horizontal resolution (40 instead of 100 km) improves the model performance, as it significantly reduces the overestimation of BC levels observed at a coarser resolution in the mid-troposphere. According to the simulations at 40 km, the transport efficiency of BC (TEBC) in biomass burning plumes was larger (60 %), because it was impacted by small accumulated precipitation along trajectory (1 mm). In contrast TEBC was small (< 30 %) and accumulated precipitation amounts were larger (5-10 mm) in plumes influenced by urban anthropogenic sources and flaring activities in northern Russia, resulting in transport to lower altitudes. TEBC due to large-scale precipitation is responsible for a sharp meridional gradient in the distribution of BC concentrations. Wet removal in cumulus clouds is the cause of modeled vertical gradient of TEBC, especially in the mid-latitudes, reflecting the distribution of convective precipitation, but is dominated in the Arctic region by the large-scale wet removal associated with the formation of stratocumulus clouds in the planetary boundary layer (PBL) that produce frequent drizzle. |
format |
Article in Journal/Newspaper |
author |
Raut, Jean-Christophe Marelle, Louis Fast, Jerome D. Thomas, Jennie L. Weinzierl, Bernadett Law, Katharine S. Berg, Larry K. Roiger, Anke Easter, Richard C. Heimerl, Katharina Onishi, Tatsuo Delanoe, Julien Schlager, Hans |
author_facet |
Raut, Jean-Christophe Marelle, Louis Fast, Jerome D. Thomas, Jennie L. Weinzierl, Bernadett Law, Katharine S. Berg, Larry K. Roiger, Anke Easter, Richard C. Heimerl, Katharina Onishi, Tatsuo Delanoe, Julien Schlager, Hans |
author_sort |
Raut, Jean-Christophe |
title |
Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign |
title_short |
Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign |
title_full |
Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign |
title_fullStr |
Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign |
title_full_unstemmed |
Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign |
title_sort |
cross-polar transport and scavenging of siberian aerosols containing black carbon during the 2012 access summer campaign |
publisher |
Ludwig-Maximilians-Universität München |
publishDate |
2017 |
url |
https://epub.ub.uni-muenchen.de/53800/1/acp-17-10969-2017.pdf https://epub.ub.uni-muenchen.de/53800/ http://nbn-resolving.de/urn:nbn:de:bvb:19-epub-53800-3 https://doi.org/10.5194/acp-17-10969-2017 |
geographic |
Arctic Arctic Ocean Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Arctic Ocean Svalbard Svalbard Archipelago |
genre |
Arctic Arctic Ocean black carbon Svalbard Siberia |
genre_facet |
Arctic Arctic Ocean black carbon Svalbard Siberia |
op_source |
Atmospheric Chemistry and Physics |
op_relation |
Raut, Jean-Christophe; Marelle, Louis; Fast, Jerome D.; Thomas, Jennie L.; Weinzierl, Bernadett; Law, Katharine S.; Berg, Larry K.; Roiger, Anke; Easter, Richard C.; Heimerl, Katharina; Onishi, Tatsuo; Delanoe, Julien; Schlager, Hans (2017): Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign. In: Atmospheric Chemistry and Physics, Vol. 17, Nr. 18: S. 10969-10995 [PDF, 15MB] https://epub.ub.uni-muenchen.de/53800/1/acp-17-10969-2017.pdf http://nbn-resolving.de/urn:nbn:de:bvb:19-epub-53800-3 https://epub.ub.uni-muenchen.de/53800/ doi:10.5194/acp-17-10969-2017 |
op_doi |
https://doi.org/10.5194/acp-17-10969-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
18 |
container_start_page |
10969 |
op_container_end_page |
10995 |
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1766322324549664768 |