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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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00042222 2023-05-15T14:51:18+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 Delanoë, Julien Schlager, Hans 2017-09 electronic https://doi.org/10.5194/acp-17-10969-2017 https://noa.gwlb.de/receive/cop_mods_00042222 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041842/acp-17-10969-2017.pdf https://acp.copernicus.org/articles/17/10969/2017/acp-17-10969-2017.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-17-10969-2017 https://noa.gwlb.de/receive/cop_mods_00042222 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041842/acp-17-10969-2017.pdf https://acp.copernicus.org/articles/17/10969/2017/acp-17-10969-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/acp-17-10969-2017 2022-02-08T22:41:09Z 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 ng kg−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 Niedersächsisches Online-Archiv NOA Arctic Arctic Ocean Svalbard Svalbard Archipelago Atmospheric Chemistry and Physics 17 18 10969 10995 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung 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 Delanoë, Julien Schlager, Hans Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign |
topic_facet |
article Verlagsveröffentlichung |
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 ng kg−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 Delanoë, 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 Delanoë, 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 |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/acp-17-10969-2017 https://noa.gwlb.de/receive/cop_mods_00042222 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041842/acp-17-10969-2017.pdf https://acp.copernicus.org/articles/17/10969/2017/acp-17-10969-2017.pdf |
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_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-17-10969-2017 https://noa.gwlb.de/receive/cop_mods_00042222 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041842/acp-17-10969-2017.pdf https://acp.copernicus.org/articles/17/10969/2017/acp-17-10969-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
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 |
_version_ |
1766322348355485696 |