On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008
Recently, two Types of Ice Clouds (TICs) properties have been characterized using ISDAC airborne measurements (Alaska, April 2008). TIC-2B were characterized by fewer (<10 L−1) and larger (>110 μm) ice crystals, a larger ice supersaturation (>15%) and a fewer ice nuclei (IN) concentration (...
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Online Access: | https://hal.science/hal-00789168 https://hal.science/hal-00789168/document https://hal.science/hal-00789168/file/acp-14-1205-2014.pdf https://doi.org/10.5194/acp-14-1205-2014 |
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ftinsu:oai:HAL:hal-00789168v1 2023-06-18T03:39:37+02:00 On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008 Jouan, Caroline Pelon, Jacques Girard, Eric Ancellet, Gérard Blanchet, Jean-Pierre Delanoë, Julien TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) SPACE - LATMOS 2014 https://hal.science/hal-00789168 https://hal.science/hal-00789168/document https://hal.science/hal-00789168/file/acp-14-1205-2014.pdf https://doi.org/10.5194/acp-14-1205-2014 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-14-1205-2014 hal-00789168 https://hal.science/hal-00789168 https://hal.science/hal-00789168/document https://hal.science/hal-00789168/file/acp-14-1205-2014.pdf doi:10.5194/acp-14-1205-2014 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00789168 Atmospheric Chemistry and Physics, 2014, 14 (3), pp.1205-1224. ⟨10.5194/acp-14-1205-2014⟩ [SDE]Environmental Sciences [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2014 ftinsu https://doi.org/10.5194/acp-14-1205-2014 2023-06-06T01:12:23Z Recently, two Types of Ice Clouds (TICs) properties have been characterized using ISDAC airborne measurements (Alaska, April 2008). TIC-2B were characterized by fewer (<10 L−1) and larger (>110 μm) ice crystals, a larger ice supersaturation (>15%) and a fewer ice nuclei (IN) concentration (<2 order of magnitude) when compared to TIC-1/2A. It has been hypothesized that emissions of SO2 may reduce the ice nucleating properties of IN through acidification, resulting to a smaller concentration of larger ice crystals and leading to precipitation (e.g. cloud regime TIC-2B) because of the reduced competition for the same available moisture. Here, the origin of air masses forming the ISDAC TIC-1/2A (1 April 2008) and TIC-2B (15 April 2008) is investigated using trajectory tools and satellite data. Results show that the synoptic conditions favor air masses transport from the three potentials SO2 emission areas to Alaska: eastern China and Siberia where anthropogenic and biomass burning emission respectively are produced and the volcanic region from the Kamchatka/Aleutians. Weather conditions allow the accumulation of pollutants from eastern China/Siberia over Alaska, most probably with the contribution of acid volcanic aerosol during the TIC-2B period. OMI observations reveal that SO2 concentrations in air masses forming the TIC-2B were larger than in air masses forming the TIC-1/2A. Airborne measurements show high acidity near the TIC-2B flight where humidity was low. These results strongly support the hypothesis that acidic coating on IN are at the origin of the formation of TIC-2B. Article in Journal/Newspaper Arctic Kamchatka north slope Alaska Siberia Institut national des sciences de l'Univers: HAL-INSU Arctic Atmospheric Chemistry and Physics 14 3 1205 1224 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDE]Environmental Sciences [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[SDE]Environmental Sciences [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Jouan, Caroline Pelon, Jacques Girard, Eric Ancellet, Gérard Blanchet, Jean-Pierre Delanoë, Julien On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008 |
topic_facet |
[SDE]Environmental Sciences [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
Recently, two Types of Ice Clouds (TICs) properties have been characterized using ISDAC airborne measurements (Alaska, April 2008). TIC-2B were characterized by fewer (<10 L−1) and larger (>110 μm) ice crystals, a larger ice supersaturation (>15%) and a fewer ice nuclei (IN) concentration (<2 order of magnitude) when compared to TIC-1/2A. It has been hypothesized that emissions of SO2 may reduce the ice nucleating properties of IN through acidification, resulting to a smaller concentration of larger ice crystals and leading to precipitation (e.g. cloud regime TIC-2B) because of the reduced competition for the same available moisture. Here, the origin of air masses forming the ISDAC TIC-1/2A (1 April 2008) and TIC-2B (15 April 2008) is investigated using trajectory tools and satellite data. Results show that the synoptic conditions favor air masses transport from the three potentials SO2 emission areas to Alaska: eastern China and Siberia where anthropogenic and biomass burning emission respectively are produced and the volcanic region from the Kamchatka/Aleutians. Weather conditions allow the accumulation of pollutants from eastern China/Siberia over Alaska, most probably with the contribution of acid volcanic aerosol during the TIC-2B period. OMI observations reveal that SO2 concentrations in air masses forming the TIC-2B were larger than in air masses forming the TIC-1/2A. Airborne measurements show high acidity near the TIC-2B flight where humidity was low. These results strongly support the hypothesis that acidic coating on IN are at the origin of the formation of TIC-2B. |
author2 |
TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) SPACE - LATMOS |
format |
Article in Journal/Newspaper |
author |
Jouan, Caroline Pelon, Jacques Girard, Eric Ancellet, Gérard Blanchet, Jean-Pierre Delanoë, Julien |
author_facet |
Jouan, Caroline Pelon, Jacques Girard, Eric Ancellet, Gérard Blanchet, Jean-Pierre Delanoë, Julien |
author_sort |
Jouan, Caroline |
title |
On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008 |
title_short |
On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008 |
title_full |
On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008 |
title_fullStr |
On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008 |
title_full_unstemmed |
On the relationship between Arctic ice clouds and polluted air masses over the North Slope of Alaska in April 2008 |
title_sort |
on the relationship between arctic ice clouds and polluted air masses over the north slope of alaska in april 2008 |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-00789168 https://hal.science/hal-00789168/document https://hal.science/hal-00789168/file/acp-14-1205-2014.pdf https://doi.org/10.5194/acp-14-1205-2014 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Kamchatka north slope Alaska Siberia |
genre_facet |
Arctic Kamchatka north slope Alaska Siberia |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00789168 Atmospheric Chemistry and Physics, 2014, 14 (3), pp.1205-1224. ⟨10.5194/acp-14-1205-2014⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-14-1205-2014 hal-00789168 https://hal.science/hal-00789168 https://hal.science/hal-00789168/document https://hal.science/hal-00789168/file/acp-14-1205-2014.pdf doi:10.5194/acp-14-1205-2014 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-14-1205-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
3 |
container_start_page |
1205 |
op_container_end_page |
1224 |
_version_ |
1769004334247313408 |