Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO
International audience We compare the cloud detection and cloud phase determination of three independent climatologies based on Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) to airborne in situ measurements. Our analysis of the cloud detection shows that the differences...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-01318943 https://hal.sorbonne-universite.fr/hal-01318943/document https://hal.sorbonne-universite.fr/hal-01318943/file/Cesana_2016_Using_in_situ.pdf https://doi.org/10.1002/2015JD024334 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
topic |
cloud phase in situ validation CALIPSO cloud [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
cloud phase in situ validation CALIPSO cloud [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Cesana, Gregory Chepfer, H. Winker, D. Getzewich, B. Cai, X. Jourdan, O. Mioche, G. Okamoto, H. Hagihara, Y. Noel, V. Reverdy, M. Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO |
topic_facet |
cloud phase in situ validation CALIPSO cloud [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience We compare the cloud detection and cloud phase determination of three independent climatologies based on Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) to airborne in situ measurements. Our analysis of the cloud detection shows that the differences between the satellite and in situ measurements mainly arise from three factors. First, averaging CALIPSO Level l data along track before cloud detection increases the estimate of high-and low-level cloud fractions. Second, the vertical averaging of Level 1 data before cloud detection tends to artificially increase the cloud vertical extent. Third, the differences in classification of fully attenuated pixels among the CALIPSO climatologies lead to differences in the low-level Arctic cloud fractions. In another section, we compare the cloudy pixels detected by colocated in situ and satellite observations to study the cloud phase determination. At midlatitudes, retrievals of homogeneous high ice clouds by CALIPSO data sets are very robust (more than 94.6% of agreement with in situ). In the Arctic, where the cloud phase vertical variability is larger within a 480 m pixel, all climatologies show disagreements with the in situ measurements and CALIPSO-General Circulation Models-Oriented Cloud Product (GOCCP) report significant undefined-phase clouds, which likely correspond to mixed-phase clouds. In all CALIPSO products, the phase determination is dominated by the cloud top phase. Finally, we use global statistics to demonstrate that main differences between the CALIPSO cloud phase products stem from the cloud detection (horizontal averaging, fully attenuated pixels) rather than the cloud phase determination procedures. |
author2 |
Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC) NASA Langley Research Center Hampton (LaRC) Science Systems and Applications, Inc. Lanham (SSAI) Laboratoire de météorologie physique (LaMP) Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS) Research Institute for Applied Mechanics Fukuoka (RIAM) Kyushu University Fukuoka Laboratoire d'aérologie (LAERO) Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées |
format |
Article in Journal/Newspaper |
author |
Cesana, Gregory Chepfer, H. Winker, D. Getzewich, B. Cai, X. Jourdan, O. Mioche, G. Okamoto, H. Hagihara, Y. Noel, V. Reverdy, M. |
author_facet |
Cesana, Gregory Chepfer, H. Winker, D. Getzewich, B. Cai, X. Jourdan, O. Mioche, G. Okamoto, H. Hagihara, Y. Noel, V. Reverdy, M. |
author_sort |
Cesana, Gregory |
title |
Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO |
title_short |
Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO |
title_full |
Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO |
title_fullStr |
Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO |
title_full_unstemmed |
Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO |
title_sort |
using in-situ airborne measurements to evaluate three cloud phase products derived from calipso |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.sorbonne-universite.fr/hal-01318943 https://hal.sorbonne-universite.fr/hal-01318943/document https://hal.sorbonne-universite.fr/hal-01318943/file/Cesana_2016_Using_in_situ.pdf https://doi.org/10.1002/2015JD024334 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.sorbonne-universite.fr/hal-01318943 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2016, ⟨10.1002/2015JD024334⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JD024334 hal-01318943 https://hal.sorbonne-universite.fr/hal-01318943 https://hal.sorbonne-universite.fr/hal-01318943/document https://hal.sorbonne-universite.fr/hal-01318943/file/Cesana_2016_Using_in_situ.pdf doi:10.1002/2015JD024334 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2015JD024334 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
121 |
container_issue |
10 |
container_start_page |
5788 |
op_container_end_page |
5808 |
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1766332544346750976 |
spelling |
ftccsdartic:oai:HAL:hal-01318943v1 2023-05-15T15:00:26+02:00 Using in-situ airborne measurements to evaluate three cloud phase products derived from CALIPSO Cesana, Gregory Chepfer, H. Winker, D. Getzewich, B. Cai, X. Jourdan, O. Mioche, G. Okamoto, H. Hagihara, Y. Noel, V. Reverdy, M. Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC) NASA Langley Research Center Hampton (LaRC) Science Systems and Applications, Inc. Lanham (SSAI) Laboratoire de météorologie physique (LaMP) Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS) Research Institute for Applied Mechanics Fukuoka (RIAM) Kyushu University Fukuoka Laboratoire d'aérologie (LAERO) Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées 2016 https://hal.sorbonne-universite.fr/hal-01318943 https://hal.sorbonne-universite.fr/hal-01318943/document https://hal.sorbonne-universite.fr/hal-01318943/file/Cesana_2016_Using_in_situ.pdf https://doi.org/10.1002/2015JD024334 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JD024334 hal-01318943 https://hal.sorbonne-universite.fr/hal-01318943 https://hal.sorbonne-universite.fr/hal-01318943/document https://hal.sorbonne-universite.fr/hal-01318943/file/Cesana_2016_Using_in_situ.pdf doi:10.1002/2015JD024334 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.sorbonne-universite.fr/hal-01318943 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2016, ⟨10.1002/2015JD024334⟩ cloud phase in situ validation CALIPSO cloud [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2016 ftccsdartic https://doi.org/10.1002/2015JD024334 2021-12-12T04:32:54Z International audience We compare the cloud detection and cloud phase determination of three independent climatologies based on Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) to airborne in situ measurements. Our analysis of the cloud detection shows that the differences between the satellite and in situ measurements mainly arise from three factors. First, averaging CALIPSO Level l data along track before cloud detection increases the estimate of high-and low-level cloud fractions. Second, the vertical averaging of Level 1 data before cloud detection tends to artificially increase the cloud vertical extent. Third, the differences in classification of fully attenuated pixels among the CALIPSO climatologies lead to differences in the low-level Arctic cloud fractions. In another section, we compare the cloudy pixels detected by colocated in situ and satellite observations to study the cloud phase determination. At midlatitudes, retrievals of homogeneous high ice clouds by CALIPSO data sets are very robust (more than 94.6% of agreement with in situ). In the Arctic, where the cloud phase vertical variability is larger within a 480 m pixel, all climatologies show disagreements with the in situ measurements and CALIPSO-General Circulation Models-Oriented Cloud Product (GOCCP) report significant undefined-phase clouds, which likely correspond to mixed-phase clouds. In all CALIPSO products, the phase determination is dominated by the cloud top phase. Finally, we use global statistics to demonstrate that main differences between the CALIPSO cloud phase products stem from the cloud detection (horizontal averaging, fully attenuated pixels) rather than the cloud phase determination procedures. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Journal of Geophysical Research: Atmospheres 121 10 5788 5808 |