On the onset of the ice phase in boundary layer Arctic clouds
International audience [1] Airborne measurements in slightly supercooled Arctic boundary layer stratocumulus have been carried out in Spitsbergen on 29 May during the ASTAR 2004 campaign. Cloud measurements have been performed in both warm and cold sectors of a cold front passing the observation are...
Published in: | Journal of Geophysical Research |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-01981212 https://hal.science/hal-01981212/document https://hal.science/hal-01981212/file/Gayet_et_al-2009-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf https://doi.org/10.1029/2008jd011348 |
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ftclermontuniv:oai:HAL:hal-01981212v1 2024-02-11T10:00:55+01:00 On the onset of the ice phase in boundary layer Arctic clouds Gayet, Jean-François Treffeisen, Renate Helbig, Alfred Bareiss, Jörg Matsuki, Atsushi Herber, Andreas Schwarzenboeck, Alfons Laboratoire de météorologie physique (LaMP) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Organization of Frontier Science and Innovation Kanazawa (O-FSI) Kanazawa University (KU) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association 2009 https://hal.science/hal-01981212 https://hal.science/hal-01981212/document https://hal.science/hal-01981212/file/Gayet_et_al-2009-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf https://doi.org/10.1029/2008jd011348 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008jd011348 hal-01981212 https://hal.science/hal-01981212 https://hal.science/hal-01981212/document https://hal.science/hal-01981212/file/Gayet_et_al-2009-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf doi:10.1029/2008jd011348 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-01981212 Journal of Geophysical Research, 2009, 114 (D19), ⟨10.1029/2008jd011348⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2009 ftclermontuniv https://doi.org/10.1029/2008jd011348 2024-01-16T23:44:03Z International audience [1] Airborne measurements in slightly supercooled Arctic boundary layer stratocumulus have been carried out in Spitsbergen on 29 May during the ASTAR 2004 campaign. Cloud measurements have been performed in both warm and cold sectors of a cold front passing the observation area. The results show a north-south gradient in freezing properties and thus evidence of significant differences in the cloud microstructure. Ahead of the front line, in the warm sector (cloud top temperature at À4°C), no ice particles were detected. The cloud formed in clean air conditions (aerosol concentration of 300 cm À3) with subsequent large effective diameter (20-26 mm) and low concentration (50 cm À3) of cloud droplets. Therefore, the collision-coalescence process was effective, favoring the drizzle formation with concentration up to 300 L À1 (D > 50 mm). In the cold sector behind the front, with a lower cloud top temperature (À6°C), ice crystals were observed in the entire cloud layer, and no droplets larger than about 50 mm (drizzle) were detected. The observations confirm high ice particle concentrations (up to 50 L À1) even with rather warm cloud top (À6°C) compared to previous studies in Arctic clouds. The shattering of isolated drops during freezing and the ice splinter production during riming appear to be the most likely processes to explain the observations of high ice concentration in the cold sector. Analysis of back trajectories did not reveal significant differences in the origin of the air masses in the warm and cold sectors that might have contributed to the differentiation of aerosol composition and thus cloud properties. A cloud top temperature colder than À4°C appears to be required for the onset of the ice phase in this slightly supercooled stratiform cloud. Article in Journal/Newspaper Arctic Spitsbergen HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) Arctic Splinter ENVELOPE(-58.133,-58.133,-62.025,-62.025) Journal of Geophysical Research 114 D19 |
institution |
Open Polar |
collection |
HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) |
op_collection_id |
ftclermontuniv |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Gayet, Jean-François Treffeisen, Renate Helbig, Alfred Bareiss, Jörg Matsuki, Atsushi Herber, Andreas Schwarzenboeck, Alfons On the onset of the ice phase in boundary layer Arctic clouds |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience [1] Airborne measurements in slightly supercooled Arctic boundary layer stratocumulus have been carried out in Spitsbergen on 29 May during the ASTAR 2004 campaign. Cloud measurements have been performed in both warm and cold sectors of a cold front passing the observation area. The results show a north-south gradient in freezing properties and thus evidence of significant differences in the cloud microstructure. Ahead of the front line, in the warm sector (cloud top temperature at À4°C), no ice particles were detected. The cloud formed in clean air conditions (aerosol concentration of 300 cm À3) with subsequent large effective diameter (20-26 mm) and low concentration (50 cm À3) of cloud droplets. Therefore, the collision-coalescence process was effective, favoring the drizzle formation with concentration up to 300 L À1 (D > 50 mm). In the cold sector behind the front, with a lower cloud top temperature (À6°C), ice crystals were observed in the entire cloud layer, and no droplets larger than about 50 mm (drizzle) were detected. The observations confirm high ice particle concentrations (up to 50 L À1) even with rather warm cloud top (À6°C) compared to previous studies in Arctic clouds. The shattering of isolated drops during freezing and the ice splinter production during riming appear to be the most likely processes to explain the observations of high ice concentration in the cold sector. Analysis of back trajectories did not reveal significant differences in the origin of the air masses in the warm and cold sectors that might have contributed to the differentiation of aerosol composition and thus cloud properties. A cloud top temperature colder than À4°C appears to be required for the onset of the ice phase in this slightly supercooled stratiform cloud. |
author2 |
Laboratoire de météorologie physique (LaMP) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Organization of Frontier Science and Innovation Kanazawa (O-FSI) Kanazawa University (KU) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association |
format |
Article in Journal/Newspaper |
author |
Gayet, Jean-François Treffeisen, Renate Helbig, Alfred Bareiss, Jörg Matsuki, Atsushi Herber, Andreas Schwarzenboeck, Alfons |
author_facet |
Gayet, Jean-François Treffeisen, Renate Helbig, Alfred Bareiss, Jörg Matsuki, Atsushi Herber, Andreas Schwarzenboeck, Alfons |
author_sort |
Gayet, Jean-François |
title |
On the onset of the ice phase in boundary layer Arctic clouds |
title_short |
On the onset of the ice phase in boundary layer Arctic clouds |
title_full |
On the onset of the ice phase in boundary layer Arctic clouds |
title_fullStr |
On the onset of the ice phase in boundary layer Arctic clouds |
title_full_unstemmed |
On the onset of the ice phase in boundary layer Arctic clouds |
title_sort |
on the onset of the ice phase in boundary layer arctic clouds |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-01981212 https://hal.science/hal-01981212/document https://hal.science/hal-01981212/file/Gayet_et_al-2009-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf https://doi.org/10.1029/2008jd011348 |
long_lat |
ENVELOPE(-58.133,-58.133,-62.025,-62.025) |
geographic |
Arctic Splinter |
geographic_facet |
Arctic Splinter |
genre |
Arctic Spitsbergen |
genre_facet |
Arctic Spitsbergen |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-01981212 Journal of Geophysical Research, 2009, 114 (D19), ⟨10.1029/2008jd011348⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008jd011348 hal-01981212 https://hal.science/hal-01981212 https://hal.science/hal-01981212/document https://hal.science/hal-01981212/file/Gayet_et_al-2009-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf doi:10.1029/2008jd011348 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2008jd011348 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
D19 |
_version_ |
1790596640358268928 |