In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses
International audience In situ observations of aerosol particles contained in cirrus crystals are presented and compared to interstitial aerosol size distributions (non-activated particles in between the cirrus crystals). The observations were conducted in cirrus clouds in the Southern and Northern...
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ftinsu:oai:HAL:hal-00327803v1 2023-11-12T04:22:29+01:00 In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses Seifert, M. Ström, J. Krejci, R. Minikin, A. Petzold, A. Gayet, Jean-François Schumann, U. Ovarlez, J. Department of Meteorology Stockholm (MISU) Stockholm University Air Pollution Laboratory Stockholm DLR Institut für Physik der Atmosphäre (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) 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) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) 2002-10-19 https://hal.science/hal-00327803 https://hal.science/hal-00327803/document https://hal.science/hal-00327803/file/acpd-2-1599-2002.pdf en eng HAL CCSD European Geosciences Union hal-00327803 https://hal.science/hal-00327803 https://hal.science/hal-00327803/document https://hal.science/hal-00327803/file/acpd-2-1599-2002.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00327803 Atmospheric Chemistry and Physics Discussions, 2002, 2 (5), pp.1599-1633 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2002 ftinsu 2023-10-25T16:24:47Z International audience In situ observations of aerosol particles contained in cirrus crystals are presented and compared to interstitial aerosol size distributions (non-activated particles in between the cirrus crystals). The observations were conducted in cirrus clouds in the Southern and Northern Hemisphere mid-latitudes during the INCA project. The first campaign in March and April 2000 was performed from Punta Arenas, Chile (54° S) in pristine air. The second campaign in September and October 2000 was performed from Prestwick, Scotland (53° N) in the vicinity of the North Atlantic flight corridor. Size distribution measurements of crystal residuals (particles remaining after evaporation of the crystals) show that small aerosol particles (D p < 0.1µm) dominate the number density of residuals. The crystal residual size distributions were significantly different in the two campaigns. On average the residual size distributions were shifted towards larger sizes in the Southern Hemisphere. For a given integral residual number density, the calculated particle volume was on average three times larger in the Southern Hemisphere. This may be of significance to the vertical redistribution of aerosol mass by clouds in the tropopause region. In both campaigns the mean residual size increased with increasing crystal number density. The observations of ambient aerosol particles were consistent with the expected higher pollution level in the Northern Hemisphere. The fraction of residual particles only contributes to approximately a percent or less of the total number of particles, which is the sum of the residual and interstitial particles. Article in Journal/Newspaper North Atlantic Institut national des sciences de l'Univers: HAL-INSU Inca ENVELOPE(-59.194,-59.194,-62.308,-62.308) |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Seifert, M. Ström, J. Krejci, R. Minikin, A. Petzold, A. Gayet, Jean-François Schumann, U. Ovarlez, J. In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience In situ observations of aerosol particles contained in cirrus crystals are presented and compared to interstitial aerosol size distributions (non-activated particles in between the cirrus crystals). The observations were conducted in cirrus clouds in the Southern and Northern Hemisphere mid-latitudes during the INCA project. The first campaign in March and April 2000 was performed from Punta Arenas, Chile (54° S) in pristine air. The second campaign in September and October 2000 was performed from Prestwick, Scotland (53° N) in the vicinity of the North Atlantic flight corridor. Size distribution measurements of crystal residuals (particles remaining after evaporation of the crystals) show that small aerosol particles (D p < 0.1µm) dominate the number density of residuals. The crystal residual size distributions were significantly different in the two campaigns. On average the residual size distributions were shifted towards larger sizes in the Southern Hemisphere. For a given integral residual number density, the calculated particle volume was on average three times larger in the Southern Hemisphere. This may be of significance to the vertical redistribution of aerosol mass by clouds in the tropopause region. In both campaigns the mean residual size increased with increasing crystal number density. The observations of ambient aerosol particles were consistent with the expected higher pollution level in the Northern Hemisphere. The fraction of residual particles only contributes to approximately a percent or less of the total number of particles, which is the sum of the residual and interstitial particles. |
author2 |
Department of Meteorology Stockholm (MISU) Stockholm University Air Pollution Laboratory Stockholm DLR Institut für Physik der Atmosphäre (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) 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) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
format |
Article in Journal/Newspaper |
author |
Seifert, M. Ström, J. Krejci, R. Minikin, A. Petzold, A. Gayet, Jean-François Schumann, U. Ovarlez, J. |
author_facet |
Seifert, M. Ström, J. Krejci, R. Minikin, A. Petzold, A. Gayet, Jean-François Schumann, U. Ovarlez, J. |
author_sort |
Seifert, M. |
title |
In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses |
title_short |
In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses |
title_full |
In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses |
title_fullStr |
In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses |
title_full_unstemmed |
In situ observations of aerosol particles remaining from evaporated cirrus crystals: Comparing clean and polluted air masses |
title_sort |
in situ observations of aerosol particles remaining from evaporated cirrus crystals: comparing clean and polluted air masses |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-00327803 https://hal.science/hal-00327803/document https://hal.science/hal-00327803/file/acpd-2-1599-2002.pdf |
long_lat |
ENVELOPE(-59.194,-59.194,-62.308,-62.308) |
geographic |
Inca |
geographic_facet |
Inca |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00327803 Atmospheric Chemistry and Physics Discussions, 2002, 2 (5), pp.1599-1633 |
op_relation |
hal-00327803 https://hal.science/hal-00327803 https://hal.science/hal-00327803/document https://hal.science/hal-00327803/file/acpd-2-1599-2002.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782337527326179328 |