Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014
Within the framework of the RACEPAC (Radiation-Aerosol-Cloud Experiment in the Arctic Circle) project, the Arctic aerosol, arriving at a ground-based station in Tuktoyaktuk (Mackenzie River delta area, Canada), was characterized during a period of 3 weeks in May 2014. Basic meteorological parameters...
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Katlenburg-Lindau : EGU
2018
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Online Access: | https://oa.tib.eu/renate/handle/123456789/12082 https://doi.org/10.34657/11116 |
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ftleibnizopen:oai:oai.leibnizopen.de:hCaPVYsBBwLIz6xGRv0Z 2023-11-12T04:11:44+01:00 Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014 Herenz, Paul Wex, Heike Henning, Silvia Kristensen, Thomas Bjerring Rubach, Florian Roth, Anja Borrmann, Stephan Bozem, Heiko Schulz, Hannes Stratmann, Frank 2018 application/pdf https://oa.tib.eu/renate/handle/123456789/12082 https://doi.org/10.34657/11116 eng eng Katlenburg-Lindau : EGU CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0 Atmospheric Chemistry and Physics 18 (2018), Nr. 7 aerosol air mass cloud condensation nucleus concentration (composition) long range transport particle size seasonal variation size distribution Canada Canadian Arctic Mackenzie Delta Northwest Territories Siberia Tuktoyaktuk 550 article Text 2018 ftleibnizopen https://doi.org/10.34657/11116 2023-10-22T23:35:23Z Within the framework of the RACEPAC (Radiation-Aerosol-Cloud Experiment in the Arctic Circle) project, the Arctic aerosol, arriving at a ground-based station in Tuktoyaktuk (Mackenzie River delta area, Canada), was characterized during a period of 3 weeks in May 2014. Basic meteorological parameters and particle number size distributions (PNSDs) were observed and two distinct types of air masses were found. One type were typical Arctic haze air masses, termed accumulation-type air masses, characterized by a monomodal PNSD with a pronounced accumulation mode at sizes above 100 nm. These air masses were observed during a period when back trajectories indicate an air mass origin in the north-east of Canada. The other air mass type is characterized by a bimodal PNSD with a clear minimum around 90ĝ€†nm and with an Aitken mode consisting of freshly formed aerosol particles. Back trajectories indicate that these air masses, termed Aitken-type air masses, originated from the North Pacific. In addition, the application of the PSCF receptor model shows that air masses with their origin in active fire areas in central Canada and Siberia, in areas of industrial anthropogenic pollution (Norilsk and Prudhoe Bay Oil Field) and the north-west Pacific have enhanced total particle number concentrations (N CN). Generally, N CN ranged from 20 to 500 cmg'3, while cloud condensation nuclei (CCN) number concentrations were found to cover a range from less than 10 up to 250 cmg'3 for a supersaturation (SS) between 0.1 and 0.7 %. The hygroscopicity parameter of the CCN was determined to be 0.23 on average and variations in were largely attributed to measurement uncertainties. Furthermore, simultaneous PNSD measurements at the ground station and on the Polar 6 research aircraft were performed. We found a good agreement of ground-based PNSDs with those measured between 200 and 1200 m. During two of the four overflights, particle number concentrations at 3000 m were found to be up to 20 times higher than those measured below 2000 m; for ... Article in Journal/Newspaper Arctic Mackenzie Delta Mackenzie river norilsk Northwest Territories Prudhoe Bay Tuktoyaktuk Siberia Unknown Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Mackenzie River Norilsk ENVELOPE(88.203,88.203,69.354,69.354) Northwest Territories Pacific Tuktoyaktuk ENVELOPE(-133.006,-133.006,69.425,69.425) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
aerosol air mass cloud condensation nucleus concentration (composition) long range transport particle size seasonal variation size distribution Canada Canadian Arctic Mackenzie Delta Northwest Territories Siberia Tuktoyaktuk 550 |
spellingShingle |
aerosol air mass cloud condensation nucleus concentration (composition) long range transport particle size seasonal variation size distribution Canada Canadian Arctic Mackenzie Delta Northwest Territories Siberia Tuktoyaktuk 550 Herenz, Paul Wex, Heike Henning, Silvia Kristensen, Thomas Bjerring Rubach, Florian Roth, Anja Borrmann, Stephan Bozem, Heiko Schulz, Hannes Stratmann, Frank Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014 |
topic_facet |
aerosol air mass cloud condensation nucleus concentration (composition) long range transport particle size seasonal variation size distribution Canada Canadian Arctic Mackenzie Delta Northwest Territories Siberia Tuktoyaktuk 550 |
description |
Within the framework of the RACEPAC (Radiation-Aerosol-Cloud Experiment in the Arctic Circle) project, the Arctic aerosol, arriving at a ground-based station in Tuktoyaktuk (Mackenzie River delta area, Canada), was characterized during a period of 3 weeks in May 2014. Basic meteorological parameters and particle number size distributions (PNSDs) were observed and two distinct types of air masses were found. One type were typical Arctic haze air masses, termed accumulation-type air masses, characterized by a monomodal PNSD with a pronounced accumulation mode at sizes above 100 nm. These air masses were observed during a period when back trajectories indicate an air mass origin in the north-east of Canada. The other air mass type is characterized by a bimodal PNSD with a clear minimum around 90ĝ€†nm and with an Aitken mode consisting of freshly formed aerosol particles. Back trajectories indicate that these air masses, termed Aitken-type air masses, originated from the North Pacific. In addition, the application of the PSCF receptor model shows that air masses with their origin in active fire areas in central Canada and Siberia, in areas of industrial anthropogenic pollution (Norilsk and Prudhoe Bay Oil Field) and the north-west Pacific have enhanced total particle number concentrations (N CN). Generally, N CN ranged from 20 to 500 cmg'3, while cloud condensation nuclei (CCN) number concentrations were found to cover a range from less than 10 up to 250 cmg'3 for a supersaturation (SS) between 0.1 and 0.7 %. The hygroscopicity parameter of the CCN was determined to be 0.23 on average and variations in were largely attributed to measurement uncertainties. Furthermore, simultaneous PNSD measurements at the ground station and on the Polar 6 research aircraft were performed. We found a good agreement of ground-based PNSDs with those measured between 200 and 1200 m. During two of the four overflights, particle number concentrations at 3000 m were found to be up to 20 times higher than those measured below 2000 m; for ... |
format |
Article in Journal/Newspaper |
author |
Herenz, Paul Wex, Heike Henning, Silvia Kristensen, Thomas Bjerring Rubach, Florian Roth, Anja Borrmann, Stephan Bozem, Heiko Schulz, Hannes Stratmann, Frank |
author_facet |
Herenz, Paul Wex, Heike Henning, Silvia Kristensen, Thomas Bjerring Rubach, Florian Roth, Anja Borrmann, Stephan Bozem, Heiko Schulz, Hannes Stratmann, Frank |
author_sort |
Herenz, Paul |
title |
Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014 |
title_short |
Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014 |
title_full |
Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014 |
title_fullStr |
Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014 |
title_full_unstemmed |
Measurements of aerosol and CCN properties in the Mackenzie River delta (Canadian Arctic) during spring-summer transition in May 2014 |
title_sort |
measurements of aerosol and ccn properties in the mackenzie river delta (canadian arctic) during spring-summer transition in may 2014 |
publisher |
Katlenburg-Lindau : EGU |
publishDate |
2018 |
url |
https://oa.tib.eu/renate/handle/123456789/12082 https://doi.org/10.34657/11116 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(88.203,88.203,69.354,69.354) ENVELOPE(-133.006,-133.006,69.425,69.425) |
geographic |
Aitken Arctic Canada Mackenzie Delta Mackenzie River Norilsk Northwest Territories Pacific Tuktoyaktuk |
geographic_facet |
Aitken Arctic Canada Mackenzie Delta Mackenzie River Norilsk Northwest Territories Pacific Tuktoyaktuk |
genre |
Arctic Mackenzie Delta Mackenzie river norilsk Northwest Territories Prudhoe Bay Tuktoyaktuk Siberia |
genre_facet |
Arctic Mackenzie Delta Mackenzie river norilsk Northwest Territories Prudhoe Bay Tuktoyaktuk Siberia |
op_source |
Atmospheric Chemistry and Physics 18 (2018), Nr. 7 |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.34657/11116 |
_version_ |
1782330696591736832 |