A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005)
Black carbon (BC) particles accumulated in the Arctic troposphere and deposited on snow have been calculated to have significant effects on radiative forcing of the Arctic regional climate. Applying cluster analysis technique on 10-day backward trajectories, seven distinct transport pathways (or clu...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2010
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-10-5065-2010 https://doaj.org/article/6480a6cdb6fd4cf686dbfdb23f800b12 |
id |
ftdoajarticles:oai:doaj.org/article:6480a6cdb6fd4cf686dbfdb23f800b12 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:6480a6cdb6fd4cf686dbfdb23f800b12 2023-05-15T14:53:08+02:00 A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005) L. Huang S. L. Gong S. Sharma D. Lavoué C. Q. Jia 2010-06-01T00:00:00Z https://doi.org/10.5194/acp-10-5065-2010 https://doaj.org/article/6480a6cdb6fd4cf686dbfdb23f800b12 EN eng Copernicus Publications http://www.atmos-chem-phys.net/10/5065/2010/acp-10-5065-2010.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-10-5065-2010 1680-7316 1680-7324 https://doaj.org/article/6480a6cdb6fd4cf686dbfdb23f800b12 Atmospheric Chemistry and Physics, Vol 10, Iss 11, Pp 5065-5073 (2010) Physics QC1-999 Chemistry QD1-999 article 2010 ftdoajarticles https://doi.org/10.5194/acp-10-5065-2010 2022-12-30T22:41:10Z Black carbon (BC) particles accumulated in the Arctic troposphere and deposited on snow have been calculated to have significant effects on radiative forcing of the Arctic regional climate. Applying cluster analysis technique on 10-day backward trajectories, seven distinct transport pathways (or clusters) affecting Alert (82.5° N, 62.5° W), Nunavut in Canada are identified in this work. Transport frequency associated with each pathway is obtained as the fraction of trajectories in that cluster. Based on atmospheric transport frequency and BC surface flux from surrounding regions (i.e. North America, Europe, and former USSR), a linear regression model is constructed to investigate the inter-annual variations of BC observed at Alert in January and April, representative of winter and spring respectively, between 1990 and 2005. Strong correlations are found between BC concentrations predicted with the regression model and measurements at Alert for both seasons ( R 2 equals 0.77 and 0.81 for winter and spring, respectively). Results imply that atmospheric transport and BC emission are the major contributors to the inter-annual variations in BC concentrations observed at Alert in the cold seasons for the 16-year period. Other factors, such as deposition, could also contribute to the variability in BC concentrations but were not considered in this analysis. Based on the regression model the relative contributions of regional BC emissions affecting Alert are attributed to the Eurasian sector, composed of the European Union and the former USSR, and the North American sector. Considering both seasons, the model suggests that former USSR is the major contributor to the near-surface BC levels at the Canadian high Arctic site with an average contribution of about 67% during the 16-year period, followed by European Union (18%) and North America (15%). In winter, the atmospheric transport of BC aerosols from Eurasia is found to be even more predominant with a multi-year average of 94%. The model estimates smaller contribution ... Article in Journal/Newspaper Arctic black carbon Nunavut Directory of Open Access Journals: DOAJ Articles Arctic Nunavut Canada Atmospheric Chemistry and Physics 10 11 5065 5073 |
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 L. Huang S. L. Gong S. Sharma D. Lavoué C. Q. Jia A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005) |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Black carbon (BC) particles accumulated in the Arctic troposphere and deposited on snow have been calculated to have significant effects on radiative forcing of the Arctic regional climate. Applying cluster analysis technique on 10-day backward trajectories, seven distinct transport pathways (or clusters) affecting Alert (82.5° N, 62.5° W), Nunavut in Canada are identified in this work. Transport frequency associated with each pathway is obtained as the fraction of trajectories in that cluster. Based on atmospheric transport frequency and BC surface flux from surrounding regions (i.e. North America, Europe, and former USSR), a linear regression model is constructed to investigate the inter-annual variations of BC observed at Alert in January and April, representative of winter and spring respectively, between 1990 and 2005. Strong correlations are found between BC concentrations predicted with the regression model and measurements at Alert for both seasons ( R 2 equals 0.77 and 0.81 for winter and spring, respectively). Results imply that atmospheric transport and BC emission are the major contributors to the inter-annual variations in BC concentrations observed at Alert in the cold seasons for the 16-year period. Other factors, such as deposition, could also contribute to the variability in BC concentrations but were not considered in this analysis. Based on the regression model the relative contributions of regional BC emissions affecting Alert are attributed to the Eurasian sector, composed of the European Union and the former USSR, and the North American sector. Considering both seasons, the model suggests that former USSR is the major contributor to the near-surface BC levels at the Canadian high Arctic site with an average contribution of about 67% during the 16-year period, followed by European Union (18%) and North America (15%). In winter, the atmospheric transport of BC aerosols from Eurasia is found to be even more predominant with a multi-year average of 94%. The model estimates smaller contribution ... |
format |
Article in Journal/Newspaper |
author |
L. Huang S. L. Gong S. Sharma D. Lavoué C. Q. Jia |
author_facet |
L. Huang S. L. Gong S. Sharma D. Lavoué C. Q. Jia |
author_sort |
L. Huang |
title |
A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005) |
title_short |
A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005) |
title_full |
A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005) |
title_fullStr |
A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005) |
title_full_unstemmed |
A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005) |
title_sort |
trajectory analysis of atmospheric transport of black carbon aerosols to canadian high arctic in winter and spring (1990–2005) |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/acp-10-5065-2010 https://doaj.org/article/6480a6cdb6fd4cf686dbfdb23f800b12 |
geographic |
Arctic Nunavut Canada |
geographic_facet |
Arctic Nunavut Canada |
genre |
Arctic black carbon Nunavut |
genre_facet |
Arctic black carbon Nunavut |
op_source |
Atmospheric Chemistry and Physics, Vol 10, Iss 11, Pp 5065-5073 (2010) |
op_relation |
http://www.atmos-chem-phys.net/10/5065/2010/acp-10-5065-2010.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-10-5065-2010 1680-7316 1680-7324 https://doaj.org/article/6480a6cdb6fd4cf686dbfdb23f800b12 |
op_doi |
https://doi.org/10.5194/acp-10-5065-2010 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
10 |
container_issue |
11 |
container_start_page |
5065 |
op_container_end_page |
5073 |
_version_ |
1766324547255009280 |