Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project
We present an overview of the background, scientific goals, and execution of the Aerosol, Radiation, and Cloud Processes affecting Arctic Climate (ARCPAC) project of April 2008. We then summarize airborne measurements, made in the troposphere of the Alaskan Arctic, of aerosol particle size distribut...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2011
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-11-2423-2011 https://doaj.org/article/0b3005829f874198b078f4e69b49025e |
id |
ftdoajarticles:oai:doaj.org/article:0b3005829f874198b078f4e69b49025e |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:0b3005829f874198b078f4e69b49025e 2023-05-15T14:58:02+02:00 Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project C. A. Brock J. Cozic R. Bahreini K. D. Froyd A. M. Middlebrook A. McComiskey J. Brioude O. R. Cooper A. Stohl K. C. Aikin J. A. de Gouw D. W. Fahey R. A. Ferrare R.-S. Gao W. Gore J. S. Holloway G. Hübler A. Jefferson D. A. Lack S. Lance R. H. Moore D. M. Murphy A. Nenes P. C. Novelli J. B. Nowak J. A. Ogren J. Peischl R. B. Pierce P. Pilewskie P. K. Quinn T. B. Ryerson K. S. Schmidt J. P. Schwarz H. Sodemann J. R. Spackman H. Stark D. S. Thomson T. Thornberry P. Veres L. A. Watts C. Warneke A. G. Wollny 2011-03-01T00:00:00Z https://doi.org/10.5194/acp-11-2423-2011 https://doaj.org/article/0b3005829f874198b078f4e69b49025e EN eng Copernicus Publications http://www.atmos-chem-phys.net/11/2423/2011/acp-11-2423-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-2423-2011 1680-7316 1680-7324 https://doaj.org/article/0b3005829f874198b078f4e69b49025e Atmospheric Chemistry and Physics, Vol 11, Iss 6, Pp 2423-2453 (2011) Physics QC1-999 Chemistry QD1-999 article 2011 ftdoajarticles https://doi.org/10.5194/acp-11-2423-2011 2022-12-31T07:27:11Z We present an overview of the background, scientific goals, and execution of the Aerosol, Radiation, and Cloud Processes affecting Arctic Climate (ARCPAC) project of April 2008. We then summarize airborne measurements, made in the troposphere of the Alaskan Arctic, of aerosol particle size distributions, composition, and optical properties and discuss the sources and transport of the aerosols. The aerosol data were grouped into four categories based on gas-phase composition. First, the background troposphere contained a relatively diffuse, sulfate-rich aerosol extending from the top of the sea-ice inversion layer to 7.4 km altitude. Second, a region of depleted (relative to the background) aerosol was present within the surface inversion layer over sea-ice. Third, layers of dense, organic-rich smoke from open biomass fires in southern Russia and southeastern Siberia were frequently encountered at all altitudes from the top of the inversion layer to 7.1 km. Finally, some aerosol layers were dominated by components originating from fossil fuel combustion. Of these four categories measured during ARCPAC, the diffuse background aerosol was most similar to the average springtime aerosol properties observed at a long-term monitoring site at Barrow, Alaska. The biomass burning (BB) and fossil fuel layers were present above the sea-ice inversion layer and did not reach the sea-ice surface during the course of the ARCPAC measurements. The BB aerosol layers were highly scattering and were moderately hygroscopic. On average, the layers produced a noontime net heating of ~0.1 K day −1 between 3 and 7 km and a slight cooling at the surface. The ratios of particle mass to carbon monoxide (CO) in the BB plumes, which had been transported over distances >5000 km, were comparable to the high end of literature values derived from previous measurements in wildfire smoke. These ratios suggest minimal precipitation scavenging and removal of the BB particles between the time they were emitted and the time they were observed in ... Article in Journal/Newspaper Arctic Barrow Sea ice Alaska Siberia Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 11 6 2423 2453 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 C. A. Brock J. Cozic R. Bahreini K. D. Froyd A. M. Middlebrook A. McComiskey J. Brioude O. R. Cooper A. Stohl K. C. Aikin J. A. de Gouw D. W. Fahey R. A. Ferrare R.-S. Gao W. Gore J. S. Holloway G. Hübler A. Jefferson D. A. Lack S. Lance R. H. Moore D. M. Murphy A. Nenes P. C. Novelli J. B. Nowak J. A. Ogren J. Peischl R. B. Pierce P. Pilewskie P. K. Quinn T. B. Ryerson K. S. Schmidt J. P. Schwarz H. Sodemann J. R. Spackman H. Stark D. S. Thomson T. Thornberry P. Veres L. A. Watts C. Warneke A. G. Wollny Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
We present an overview of the background, scientific goals, and execution of the Aerosol, Radiation, and Cloud Processes affecting Arctic Climate (ARCPAC) project of April 2008. We then summarize airborne measurements, made in the troposphere of the Alaskan Arctic, of aerosol particle size distributions, composition, and optical properties and discuss the sources and transport of the aerosols. The aerosol data were grouped into four categories based on gas-phase composition. First, the background troposphere contained a relatively diffuse, sulfate-rich aerosol extending from the top of the sea-ice inversion layer to 7.4 km altitude. Second, a region of depleted (relative to the background) aerosol was present within the surface inversion layer over sea-ice. Third, layers of dense, organic-rich smoke from open biomass fires in southern Russia and southeastern Siberia were frequently encountered at all altitudes from the top of the inversion layer to 7.1 km. Finally, some aerosol layers were dominated by components originating from fossil fuel combustion. Of these four categories measured during ARCPAC, the diffuse background aerosol was most similar to the average springtime aerosol properties observed at a long-term monitoring site at Barrow, Alaska. The biomass burning (BB) and fossil fuel layers were present above the sea-ice inversion layer and did not reach the sea-ice surface during the course of the ARCPAC measurements. The BB aerosol layers were highly scattering and were moderately hygroscopic. On average, the layers produced a noontime net heating of ~0.1 K day −1 between 3 and 7 km and a slight cooling at the surface. The ratios of particle mass to carbon monoxide (CO) in the BB plumes, which had been transported over distances >5000 km, were comparable to the high end of literature values derived from previous measurements in wildfire smoke. These ratios suggest minimal precipitation scavenging and removal of the BB particles between the time they were emitted and the time they were observed in ... |
format |
Article in Journal/Newspaper |
author |
C. A. Brock J. Cozic R. Bahreini K. D. Froyd A. M. Middlebrook A. McComiskey J. Brioude O. R. Cooper A. Stohl K. C. Aikin J. A. de Gouw D. W. Fahey R. A. Ferrare R.-S. Gao W. Gore J. S. Holloway G. Hübler A. Jefferson D. A. Lack S. Lance R. H. Moore D. M. Murphy A. Nenes P. C. Novelli J. B. Nowak J. A. Ogren J. Peischl R. B. Pierce P. Pilewskie P. K. Quinn T. B. Ryerson K. S. Schmidt J. P. Schwarz H. Sodemann J. R. Spackman H. Stark D. S. Thomson T. Thornberry P. Veres L. A. Watts C. Warneke A. G. Wollny |
author_facet |
C. A. Brock J. Cozic R. Bahreini K. D. Froyd A. M. Middlebrook A. McComiskey J. Brioude O. R. Cooper A. Stohl K. C. Aikin J. A. de Gouw D. W. Fahey R. A. Ferrare R.-S. Gao W. Gore J. S. Holloway G. Hübler A. Jefferson D. A. Lack S. Lance R. H. Moore D. M. Murphy A. Nenes P. C. Novelli J. B. Nowak J. A. Ogren J. Peischl R. B. Pierce P. Pilewskie P. K. Quinn T. B. Ryerson K. S. Schmidt J. P. Schwarz H. Sodemann J. R. Spackman H. Stark D. S. Thomson T. Thornberry P. Veres L. A. Watts C. Warneke A. G. Wollny |
author_sort |
C. A. Brock |
title |
Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project |
title_short |
Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project |
title_full |
Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project |
title_fullStr |
Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project |
title_full_unstemmed |
Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project |
title_sort |
characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting arctic climate (arcpac) project |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/acp-11-2423-2011 https://doaj.org/article/0b3005829f874198b078f4e69b49025e |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Barrow Sea ice Alaska Siberia |
genre_facet |
Arctic Barrow Sea ice Alaska Siberia |
op_source |
Atmospheric Chemistry and Physics, Vol 11, Iss 6, Pp 2423-2453 (2011) |
op_relation |
http://www.atmos-chem-phys.net/11/2423/2011/acp-11-2423-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-2423-2011 1680-7316 1680-7324 https://doaj.org/article/0b3005829f874198b078f4e69b49025e |
op_doi |
https://doi.org/10.5194/acp-11-2423-2011 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
11 |
container_issue |
6 |
container_start_page |
2423 |
op_container_end_page |
2453 |
_version_ |
1766330122994974720 |