East Asian SO2 pollution plume over Europe � Part 2: Evolution and potential impact
We report on the first observation-based case study of an aged East Asian anthropogenic SO2 pollution plume over Europe. Our airborne measurements in that plume detected highly elevated SO2 mole fractions (up to 900 pmol/mol) between about 5000 and 7000m altitude. Here, we focus on investigations of...
Main Authors: | , , , , , |
---|---|
Format: | Other Non-Article Part of Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2009
|
Subjects: | |
Online Access: | https://elib.dlr.de/61747/ https://elib.dlr.de/61747/1/acp-9-4729-2009.pdf http://www.atmos-chem-phys.net/9/4729/2009/acp-9-4729-2009.pdf |
id |
ftdlr:oai:elib.dlr.de:61747 |
---|---|
record_format |
openpolar |
spelling |
ftdlr:oai:elib.dlr.de:61747 2023-05-15T17:35:57+02:00 East Asian SO2 pollution plume over Europe âÂ�Â� Part 2: Evolution and potential impact Fiedler, V. Arnold, F. Schlager, H. Dörnbrack, A. Pirjola, L. Stohl, A. 2009 application/pdf https://elib.dlr.de/61747/ https://elib.dlr.de/61747/1/acp-9-4729-2009.pdf http://www.atmos-chem-phys.net/9/4729/2009/acp-9-4729-2009.pdf en eng Copernicus Publications https://elib.dlr.de/61747/1/acp-9-4729-2009.pdf Fiedler, V. und Arnold, F. und Schlager, H. und Dörnbrack, A. und Pirjola, L. und Stohl, A. (2009) East Asian SO2 pollution plume over Europe âÂ�Â� Part 2: Evolution and potential impact. Atmospheric Chemistry and Physics, 9, Seiten 4729-4745. Copernicus Publications. Atmosphärische Spurenstoffe Zeitschriftenbeitrag PeerReviewed 2009 ftdlr 2019-05-05T22:52:54Z We report on the first observation-based case study of an aged East Asian anthropogenic SO2 pollution plume over Europe. Our airborne measurements in that plume detected highly elevated SO2 mole fractions (up to 900 pmol/mol) between about 5000 and 7000m altitude. Here, we focus on investigations of the origin, dispersion, evolution, conversion, and potential impact of the observed excess SO2. In particular, we investigate SO2 conversion to gas-phase sulfuric acid and sulfuric acid aerosols. Our FLEXPART and LAGRANTO model simulations, along with additional trace gas measurements, suggest that the plume originated from East Asian fossil fuel combustion sources and, 8âÂ�Â�7 days prior to its arrival over Europe, ascended over the coast region of central East Asia to 9000m altitude, probably in a cyclonic system with an associated warm conveyor belt. During this initial plume ascent a substantial fraction of the initially available SO2 must have escaped from removal by cloud processes. Hereafter, while mostly descending slowly, the plume experienced advection across the North Pacific, North America and the North Atlantic. During its upper troposphere travel, clouds were absent in and above the plume and OH-induced gas-phase conversion of SO2 to gas-phase sulfuric acid (GSA) was operative, followed by GSA nucleation and condensation leading to sulfuric acid aerosol formation and growth. Our AEROFOR model simulations indicate that numerous large sulfuric acid aerosol particles were formed, which at least temporarily, caused substantial horizontal visibility degradation, and which have the potential to act as water vapor condensation nuclei in liquid water cloud formation, already at water vapor supersaturations as low as about 0.1%. Our AEROFOR model simulations also indicate that those fossil fuel combustion generated soot particles, which have survived cloud induced removal during the initial plume ascent, have experienced extensive H2SO4/H2O-coating, during upper troposphere plume travel. This coating may have dramatically altered the morphology and markedly increased the light absorption efficiency of soot particles. Other Non-Article Part of Journal/Newspaper North Atlantic German Aerospace Center: elib - DLR electronic library Pacific |
institution |
Open Polar |
collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Atmosphärische Spurenstoffe |
spellingShingle |
Atmosphärische Spurenstoffe Fiedler, V. Arnold, F. Schlager, H. Dörnbrack, A. Pirjola, L. Stohl, A. East Asian SO2 pollution plume over Europe âÂ�Â� Part 2: Evolution and potential impact |
topic_facet |
Atmosphärische Spurenstoffe |
description |
We report on the first observation-based case study of an aged East Asian anthropogenic SO2 pollution plume over Europe. Our airborne measurements in that plume detected highly elevated SO2 mole fractions (up to 900 pmol/mol) between about 5000 and 7000m altitude. Here, we focus on investigations of the origin, dispersion, evolution, conversion, and potential impact of the observed excess SO2. In particular, we investigate SO2 conversion to gas-phase sulfuric acid and sulfuric acid aerosols. Our FLEXPART and LAGRANTO model simulations, along with additional trace gas measurements, suggest that the plume originated from East Asian fossil fuel combustion sources and, 8�7 days prior to its arrival over Europe, ascended over the coast region of central East Asia to 9000m altitude, probably in a cyclonic system with an associated warm conveyor belt. During this initial plume ascent a substantial fraction of the initially available SO2 must have escaped from removal by cloud processes. Hereafter, while mostly descending slowly, the plume experienced advection across the North Pacific, North America and the North Atlantic. During its upper troposphere travel, clouds were absent in and above the plume and OH-induced gas-phase conversion of SO2 to gas-phase sulfuric acid (GSA) was operative, followed by GSA nucleation and condensation leading to sulfuric acid aerosol formation and growth. Our AEROFOR model simulations indicate that numerous large sulfuric acid aerosol particles were formed, which at least temporarily, caused substantial horizontal visibility degradation, and which have the potential to act as water vapor condensation nuclei in liquid water cloud formation, already at water vapor supersaturations as low as about 0.1%. Our AEROFOR model simulations also indicate that those fossil fuel combustion generated soot particles, which have survived cloud induced removal during the initial plume ascent, have experienced extensive H2SO4/H2O-coating, during upper troposphere plume travel. This coating may have dramatically altered the morphology and markedly increased the light absorption efficiency of soot particles. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Fiedler, V. Arnold, F. Schlager, H. Dörnbrack, A. Pirjola, L. Stohl, A. |
author_facet |
Fiedler, V. Arnold, F. Schlager, H. Dörnbrack, A. Pirjola, L. Stohl, A. |
author_sort |
Fiedler, V. |
title |
East Asian SO2 pollution plume over Europe � Part 2: Evolution and potential impact |
title_short |
East Asian SO2 pollution plume over Europe � Part 2: Evolution and potential impact |
title_full |
East Asian SO2 pollution plume over Europe � Part 2: Evolution and potential impact |
title_fullStr |
East Asian SO2 pollution plume over Europe � Part 2: Evolution and potential impact |
title_full_unstemmed |
East Asian SO2 pollution plume over Europe � Part 2: Evolution and potential impact |
title_sort |
east asian so2 pollution plume over europe ã¢â�â� part 2: evolution and potential impact |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://elib.dlr.de/61747/ https://elib.dlr.de/61747/1/acp-9-4729-2009.pdf http://www.atmos-chem-phys.net/9/4729/2009/acp-9-4729-2009.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://elib.dlr.de/61747/1/acp-9-4729-2009.pdf Fiedler, V. und Arnold, F. und Schlager, H. und Dörnbrack, A. und Pirjola, L. und Stohl, A. (2009) East Asian SO2 pollution plume over Europe âÂ�Â� Part 2: Evolution and potential impact. Atmospheric Chemistry and Physics, 9, Seiten 4729-4745. Copernicus Publications. |
_version_ |
1766135257093898240 |