High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer
The vertical distribution of black carbon (BC) particles in the Arctic atmosphere is one of the key parameters controlling their radiative forcing and thus role in Arctic climate change. This work investigates the presence and properties of these light-absorbing aerosols over the High Canadian Arcti...
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ftdoajarticles:oai:doaj.org/article:cbda16c167bf40faaa5e7a8e6d600d11 2023-05-15T14:50:14+02:00 High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer H. Schulz M. Zanatta H. Bozem W. R. Leaitch A. B. Herber J. Burkart M. D. Willis D. Kunkel P. M. Hoor J. P. D. Abbatt R. Gerdes 2019-02-01T00:00:00Z https://doi.org/10.5194/acp-19-2361-2019 https://doaj.org/article/cbda16c167bf40faaa5e7a8e6d600d11 EN eng Copernicus Publications https://www.atmos-chem-phys.net/19/2361/2019/acp-19-2361-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-2361-2019 1680-7316 1680-7324 https://doaj.org/article/cbda16c167bf40faaa5e7a8e6d600d11 Atmospheric Chemistry and Physics, Vol 19, Pp 2361-2384 (2019) Physics QC1-999 Chemistry QD1-999 article 2019 ftdoajarticles https://doi.org/10.5194/acp-19-2361-2019 2022-12-31T14:25:22Z The vertical distribution of black carbon (BC) particles in the Arctic atmosphere is one of the key parameters controlling their radiative forcing and thus role in Arctic climate change. This work investigates the presence and properties of these light-absorbing aerosols over the High Canadian Arctic ( >70 ∘ N). Airborne campaigns were performed as part of the NETCARE project (Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments) and provided insights into the variability of the vertical distributions of BC particles in summer 2014 and spring 2015. The observation periods covered evolutions of cyclonic disturbances at the polar front, which favoured the transport of air pollution into the High Canadian Arctic, as otherwise this boundary between the air masses largely impedes entrainment of pollution from lower latitudes. A total of 48 vertical profiles of refractory BC (rBC) mass concentration and particle size, extending from 0.1 to 5.5 km altitude were obtained with a Single-Particle Soot Photometer (SP2). Generally, the rBC mass concentration decreased from spring to summer by a factor of 10. Such depletion was associated with a decrease in the mean rBC particle diameter, from approximately 200 to 130 nm at low altitude. Due to the very low number fraction, rBC particles did not substantially contribute to the total aerosol population in summer. The analysis of profiles with potential temperature as vertical coordinate revealed characteristic variability patterns within specific levels of the cold and stably stratified, dome-like, atmosphere over the polar region. The associated history of transport trajectories into each of these levels showed that the variability was induced by changing rates and efficiencies of rBC import. Generally, the source areas affecting the polar dome extended southward with increasing potential temperature (i.e. altitude) level in the dome. While the lower dome was mostly only influenced by low-level transport from sources within the cold ... Article in Journal/Newspaper Arctic black carbon Climate change Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 19 4 2361 2384 |
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English |
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Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 H. Schulz M. Zanatta H. Bozem W. R. Leaitch A. B. Herber J. Burkart M. D. Willis D. Kunkel P. M. Hoor J. P. D. Abbatt R. Gerdes High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The vertical distribution of black carbon (BC) particles in the Arctic atmosphere is one of the key parameters controlling their radiative forcing and thus role in Arctic climate change. This work investigates the presence and properties of these light-absorbing aerosols over the High Canadian Arctic ( >70 ∘ N). Airborne campaigns were performed as part of the NETCARE project (Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments) and provided insights into the variability of the vertical distributions of BC particles in summer 2014 and spring 2015. The observation periods covered evolutions of cyclonic disturbances at the polar front, which favoured the transport of air pollution into the High Canadian Arctic, as otherwise this boundary between the air masses largely impedes entrainment of pollution from lower latitudes. A total of 48 vertical profiles of refractory BC (rBC) mass concentration and particle size, extending from 0.1 to 5.5 km altitude were obtained with a Single-Particle Soot Photometer (SP2). Generally, the rBC mass concentration decreased from spring to summer by a factor of 10. Such depletion was associated with a decrease in the mean rBC particle diameter, from approximately 200 to 130 nm at low altitude. Due to the very low number fraction, rBC particles did not substantially contribute to the total aerosol population in summer. The analysis of profiles with potential temperature as vertical coordinate revealed characteristic variability patterns within specific levels of the cold and stably stratified, dome-like, atmosphere over the polar region. The associated history of transport trajectories into each of these levels showed that the variability was induced by changing rates and efficiencies of rBC import. Generally, the source areas affecting the polar dome extended southward with increasing potential temperature (i.e. altitude) level in the dome. While the lower dome was mostly only influenced by low-level transport from sources within the cold ... |
format |
Article in Journal/Newspaper |
author |
H. Schulz M. Zanatta H. Bozem W. R. Leaitch A. B. Herber J. Burkart M. D. Willis D. Kunkel P. M. Hoor J. P. D. Abbatt R. Gerdes |
author_facet |
H. Schulz M. Zanatta H. Bozem W. R. Leaitch A. B. Herber J. Burkart M. D. Willis D. Kunkel P. M. Hoor J. P. D. Abbatt R. Gerdes |
author_sort |
H. Schulz |
title |
High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer |
title_short |
High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer |
title_full |
High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer |
title_fullStr |
High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer |
title_full_unstemmed |
High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer |
title_sort |
high arctic aircraft measurements characterising black carbon vertical variability in spring and summer |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-2361-2019 https://doaj.org/article/cbda16c167bf40faaa5e7a8e6d600d11 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic black carbon Climate change |
genre_facet |
Arctic black carbon Climate change |
op_source |
Atmospheric Chemistry and Physics, Vol 19, Pp 2361-2384 (2019) |
op_relation |
https://www.atmos-chem-phys.net/19/2361/2019/acp-19-2361-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-2361-2019 1680-7316 1680-7324 https://doaj.org/article/cbda16c167bf40faaa5e7a8e6d600d11 |
op_doi |
https://doi.org/10.5194/acp-19-2361-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
4 |
container_start_page |
2361 |
op_container_end_page |
2384 |
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1766321277174284288 |