Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign
International audience Lidar and in situ observations performed during the Polar Study using Aircraft, Remote Sensing, Surface Measurements and Models, Climate, Chemistry, Aerosols and Transport (POLARCAT) campaign are reported here in terms of statistics to characterize aerosol properties over nort...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2014
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Online Access: | https://uca.hal.science/hal-01119972 https://uca.hal.science/hal-01119972/document https://uca.hal.science/hal-01119972/file/acp-14-8235-2014.pdf https://doi.org/10.5194/acp-14-8235-2014 |
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ftsorbonneuniv:oai:HAL:hal-01119972v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Aerosol CALIOP POLARCAT Arctic Aerosols [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
Aerosol CALIOP POLARCAT Arctic Aerosols [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Ancellet, Gérard Pelon, Jacques Blanchard, Yann Quennehen, Boris Bazureau, Ariane Law, Kathy S. Schwarzenboeck, Alfons Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign |
topic_facet |
Aerosol CALIOP POLARCAT Arctic Aerosols [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Lidar and in situ observations performed during the Polar Study using Aircraft, Remote Sensing, Surface Measurements and Models, Climate, Chemistry, Aerosols and Transport (POLARCAT) campaign are reported here in terms of statistics to characterize aerosol properties over northern Europe using daily airborne measurements conducted between Svalbard and Scandinavia from 30 March to 11 April 2008. It is shown that during this period a rather large number of aerosol layers was observed in the tropo-sphere, with a backscatter ratio at 532 nm of 1.2 (1.5 below 2 km, 1.2 between 5 and 7 km and a minimum in between). Their sources were identified using multispectral backscatter and depolarization airborne lidar measurements after careful calibration analysis. Transport analysis and comparisons between in situ and airborne lidar observations are also provided to assess the quality of this identification. Comparison with level 1 backscatter observations of the space-borne Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) were carried out to adjust CALIOP multispectral observations to airborne observations on a statistical basis. Recalibration for CALIOP daytime 1064 nm signals leads to a decrease of their values by about 30 %, possibly related to the use of the version 3.0 calibration procedure. No recalibra-tion is made at 532 nm even though 532 nm scattering ratios appear to be biased low (−8 %) because there are also significant differences in air mass sampling between airborne and CALIOP observations. Recalibration of the 1064 nm signal or correction of −5 % negative bias in the 532 nm signal both could improve the CALIOP aerosol colour ratio expected for this campaign. The first hypothesis was retained in this work. Regional analyses in the European Arctic performed as a test emphasize the potential of the CALIOP spaceborne lidar for further monitoring in-depth properties of the aerosol layers over Arctic using infrared and depolarization observations. The CALIOP April 2008 global ... |
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) 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) |
format |
Article in Journal/Newspaper |
author |
Ancellet, Gérard Pelon, Jacques Blanchard, Yann Quennehen, Boris Bazureau, Ariane Law, Kathy S. Schwarzenboeck, Alfons |
author_facet |
Ancellet, Gérard Pelon, Jacques Blanchard, Yann Quennehen, Boris Bazureau, Ariane Law, Kathy S. Schwarzenboeck, Alfons |
author_sort |
Ancellet, Gérard |
title |
Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign |
title_short |
Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign |
title_full |
Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign |
title_fullStr |
Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign |
title_full_unstemmed |
Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign |
title_sort |
transport of aerosol to the arctic: analysis of caliop and french aircraft data during the spring 2008 polarcat campaign |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://uca.hal.science/hal-01119972 https://uca.hal.science/hal-01119972/document https://uca.hal.science/hal-01119972/file/acp-14-8235-2014.pdf https://doi.org/10.5194/acp-14-8235-2014 |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://uca.hal.science/hal-01119972 Atmospheric Chemistry and Physics, 2014, 14, pp.8235-8254. ⟨10.5194/acp-14-8235-2014⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-14-8235-2014 hal-01119972 https://uca.hal.science/hal-01119972 https://uca.hal.science/hal-01119972/document https://uca.hal.science/hal-01119972/file/acp-14-8235-2014.pdf doi:10.5194/acp-14-8235-2014 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-14-8235-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
16 |
container_start_page |
8235 |
op_container_end_page |
8254 |
_version_ |
1799474095247589376 |
spelling |
ftsorbonneuniv:oai:HAL:hal-01119972v1 2024-05-19T07:35:26+00:00 Transport of aerosol to the Arctic: analysis of CALIOP and French aircraft data during the spring 2008 POLARCAT campaign Ancellet, Gérard Pelon, Jacques Blanchard, Yann Quennehen, Boris Bazureau, Ariane Law, Kathy S. Schwarzenboeck, Alfons 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) 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) 2014 https://uca.hal.science/hal-01119972 https://uca.hal.science/hal-01119972/document https://uca.hal.science/hal-01119972/file/acp-14-8235-2014.pdf https://doi.org/10.5194/acp-14-8235-2014 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-14-8235-2014 hal-01119972 https://uca.hal.science/hal-01119972 https://uca.hal.science/hal-01119972/document https://uca.hal.science/hal-01119972/file/acp-14-8235-2014.pdf doi:10.5194/acp-14-8235-2014 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://uca.hal.science/hal-01119972 Atmospheric Chemistry and Physics, 2014, 14, pp.8235-8254. ⟨10.5194/acp-14-8235-2014⟩ Aerosol CALIOP POLARCAT Arctic Aerosols [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2014 ftsorbonneuniv https://doi.org/10.5194/acp-14-8235-2014 2024-04-25T04:17:59Z International audience Lidar and in situ observations performed during the Polar Study using Aircraft, Remote Sensing, Surface Measurements and Models, Climate, Chemistry, Aerosols and Transport (POLARCAT) campaign are reported here in terms of statistics to characterize aerosol properties over northern Europe using daily airborne measurements conducted between Svalbard and Scandinavia from 30 March to 11 April 2008. It is shown that during this period a rather large number of aerosol layers was observed in the tropo-sphere, with a backscatter ratio at 532 nm of 1.2 (1.5 below 2 km, 1.2 between 5 and 7 km and a minimum in between). Their sources were identified using multispectral backscatter and depolarization airborne lidar measurements after careful calibration analysis. Transport analysis and comparisons between in situ and airborne lidar observations are also provided to assess the quality of this identification. Comparison with level 1 backscatter observations of the space-borne Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) were carried out to adjust CALIOP multispectral observations to airborne observations on a statistical basis. Recalibration for CALIOP daytime 1064 nm signals leads to a decrease of their values by about 30 %, possibly related to the use of the version 3.0 calibration procedure. No recalibra-tion is made at 532 nm even though 532 nm scattering ratios appear to be biased low (−8 %) because there are also significant differences in air mass sampling between airborne and CALIOP observations. Recalibration of the 1064 nm signal or correction of −5 % negative bias in the 532 nm signal both could improve the CALIOP aerosol colour ratio expected for this campaign. The first hypothesis was retained in this work. Regional analyses in the European Arctic performed as a test emphasize the potential of the CALIOP spaceborne lidar for further monitoring in-depth properties of the aerosol layers over Arctic using infrared and depolarization observations. The CALIOP April 2008 global ... Article in Journal/Newspaper Arctic Svalbard HAL Sorbonne Université Atmospheric Chemistry and Physics 14 16 8235 8254 |