Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer
After aerosol deposition from the atmosphere, black carbon (BC) takes part in the snow albedo feedback contributing to the modification of the Arctic radiative budget. With the initial goal of quantifying the concentration of BC in the Arctic snow and subsequent climatic impacts, snow samples were c...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00057051 2024-09-15T17:35:58+00:00 Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer Zanatta, Marco Herber, Andreas Jurányi, Zsófia Eppers, Oliver Schneider, Johannes Schwarz, Joshua P. 2021-06 electronic https://doi.org/10.5194/acp-21-9329-2021 https://noa.gwlb.de/receive/cop_mods_00057051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056701/acp-21-9329-2021.pdf https://acp.copernicus.org/articles/21/9329/2021/acp-21-9329-2021.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-21-9329-2021 https://noa.gwlb.de/receive/cop_mods_00057051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056701/acp-21-9329-2021.pdf https://acp.copernicus.org/articles/21/9329/2021/acp-21-9329-2021.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2021 ftnonlinearchiv https://doi.org/10.5194/acp-21-9329-2021 2024-06-26T04:40:00Z After aerosol deposition from the atmosphere, black carbon (BC) takes part in the snow albedo feedback contributing to the modification of the Arctic radiative budget. With the initial goal of quantifying the concentration of BC in the Arctic snow and subsequent climatic impacts, snow samples were collected during the research vessel (R/V) Polarstern expedition of PASCAL (Physical Feedbacks of Arctic Boundary Layer, Sea Ice, Cloud and Aerosol; Polarstern cruise 106) in the sea-ice-covered Fram Strait in early summer 2017. The refractory BC (rBC) content was then measured in the laboratory of the Alfred Wegener Institute with the single particle soot photometer (SP2). Based on the strong observational correlations between both rBC concentration and rBC diameter with snow salinity, we hypothesize a salt-induced matrix effect interfering with the SP2 analysis. This paper evaluates the impact of sea salt, based on the measurement of electrical conductivity (κ) in water samples, on rBC measurements made with a SP2 nebulizer technique. Under realistic salinity conditions, laboratory experiments indicated a dramatic six-fold reduction in observed rBC concentration with increasing salinity. In the salinity conditions tested in the present work (salt concentration below 0.4 g L−1) the impact of salt on the nebulization of water droplets might be negligible. However, the SP2 mass detection efficiency systematically decreased with increasing salinity, with the smaller rBC particles being preferentially undetected. The high concentration of suspended salt particles and the formation of thick salt coatings on rBC cores caused problems in the SP2 analog-to-digital conversion of the signal and incandescence quenching, respectively. Changes to the signal acquisition parameters and the laser power of the SP2 improved the mass detection efficiency, which, nonetheless, stayed below unity. The present work provides evidence that a high concentration of sea salt undermines the quantification of rBC in snow performed with the SP2 ... Article in Journal/Newspaper albedo black carbon Fram Strait Sea ice Niedersächsisches Online-Archiv NOA Atmospheric Chemistry and Physics 21 12 9329 9342 |
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article Verlagsveröffentlichung Zanatta, Marco Herber, Andreas Jurányi, Zsófia Eppers, Oliver Schneider, Johannes Schwarz, Joshua P. Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer |
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article Verlagsveröffentlichung |
description |
After aerosol deposition from the atmosphere, black carbon (BC) takes part in the snow albedo feedback contributing to the modification of the Arctic radiative budget. With the initial goal of quantifying the concentration of BC in the Arctic snow and subsequent climatic impacts, snow samples were collected during the research vessel (R/V) Polarstern expedition of PASCAL (Physical Feedbacks of Arctic Boundary Layer, Sea Ice, Cloud and Aerosol; Polarstern cruise 106) in the sea-ice-covered Fram Strait in early summer 2017. The refractory BC (rBC) content was then measured in the laboratory of the Alfred Wegener Institute with the single particle soot photometer (SP2). Based on the strong observational correlations between both rBC concentration and rBC diameter with snow salinity, we hypothesize a salt-induced matrix effect interfering with the SP2 analysis. This paper evaluates the impact of sea salt, based on the measurement of electrical conductivity (κ) in water samples, on rBC measurements made with a SP2 nebulizer technique. Under realistic salinity conditions, laboratory experiments indicated a dramatic six-fold reduction in observed rBC concentration with increasing salinity. In the salinity conditions tested in the present work (salt concentration below 0.4 g L−1) the impact of salt on the nebulization of water droplets might be negligible. However, the SP2 mass detection efficiency systematically decreased with increasing salinity, with the smaller rBC particles being preferentially undetected. The high concentration of suspended salt particles and the formation of thick salt coatings on rBC cores caused problems in the SP2 analog-to-digital conversion of the signal and incandescence quenching, respectively. Changes to the signal acquisition parameters and the laser power of the SP2 improved the mass detection efficiency, which, nonetheless, stayed below unity. The present work provides evidence that a high concentration of sea salt undermines the quantification of rBC in snow performed with the SP2 ... |
format |
Article in Journal/Newspaper |
author |
Zanatta, Marco Herber, Andreas Jurányi, Zsófia Eppers, Oliver Schneider, Johannes Schwarz, Joshua P. |
author_facet |
Zanatta, Marco Herber, Andreas Jurányi, Zsófia Eppers, Oliver Schneider, Johannes Schwarz, Joshua P. |
author_sort |
Zanatta, Marco |
title |
Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer |
title_short |
Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer |
title_full |
Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer |
title_fullStr |
Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer |
title_full_unstemmed |
Technical note: Sea salt interference with black carbon quantification in snow samples using the single particle soot photometer |
title_sort |
technical note: sea salt interference with black carbon quantification in snow samples using the single particle soot photometer |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/acp-21-9329-2021 https://noa.gwlb.de/receive/cop_mods_00057051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056701/acp-21-9329-2021.pdf https://acp.copernicus.org/articles/21/9329/2021/acp-21-9329-2021.pdf |
genre |
albedo black carbon Fram Strait Sea ice |
genre_facet |
albedo black carbon Fram Strait Sea ice |
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-21-9329-2021 https://noa.gwlb.de/receive/cop_mods_00057051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056701/acp-21-9329-2021.pdf https://acp.copernicus.org/articles/21/9329/2021/acp-21-9329-2021.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-21-9329-2021 |
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Atmospheric Chemistry and Physics |
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21 |
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12 |
container_start_page |
9329 |
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9342 |
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1810486405011341312 |