Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios

Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios

A cirrus cloud dataset from a groundbased lidar in a sub-arctic station is analyzed in terms of the particle depolarization ratio. The depolarization values -δ- showed a broad distribution, ranging between 0.25 and 0.7, with a mean value of 0.38 ± 0.07. This variability is examined in correlation wi...

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Main Authors: Voudouri Kalliopi – Artemis, Giannakaki Elina, Komppula Mika, Gialitaki Anna, Natsis Athanasios, Balis Dimitris
Format: Article
Language:English
Published: EDP Sciences 2020-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2020/13/epjconf_ilrc292020_08013.pdf
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spelling doaj-f950bd513aa84095a530f22f27e87ee02021-08-02T12:37:19ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012370801310.1051/epjconf/202023708013epjconf_ilrc292020_08013Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization RatiosVoudouri Kalliopi – Artemis0Giannakaki ElinaKomppula Mika1Gialitaki Anna2Natsis Athanasios3Balis Dimitris4Laboratory of Atmospheric Physics, Physics Department, Aristotle University of ThessalonikiFinnish Meteorological InstituteNational Observatory of Athens, NOA, Institute for Astronomy, Astrophysics, Space Applications and Remote SensingLaboratory of Atmospheric Physics, Physics Department, Aristotle University of ThessalonikiLaboratory of Atmospheric Physics, Physics Department, Aristotle University of ThessalonikiA cirrus cloud dataset from a groundbased lidar in a sub-arctic station is analyzed in terms of the particle depolarization ratio. The depolarization values -δ- showed a broad distribution, ranging between 0.25 and 0.7, with a mean value of 0.38 ± 0.07. This variability is examined in correlation with temperature dependencies and the cirrus optical depth. Depolarization values greater than 0.45 are observed from temperatures between -60oC and -40oC, where horizontally oriented planar ice crystals are to be expected. Two case studies are also, discussed and analyzed in terms of depolarization height dependence.https://www.epj-conferences.org/articles/epjconf/pdf/2020/13/epjconf_ilrc292020_08013.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Voudouri Kalliopi – Artemis
Giannakaki Elina
Komppula Mika
Gialitaki Anna
Natsis Athanasios
Balis Dimitris
spellingShingle Voudouri Kalliopi – Artemis
Giannakaki Elina
Komppula Mika
Gialitaki Anna
Natsis Athanasios
Balis Dimitris
Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios
EPJ Web of Conferences
author_facet Voudouri Kalliopi – Artemis
Giannakaki Elina
Komppula Mika
Gialitaki Anna
Natsis Athanasios
Balis Dimitris
author_sort Voudouri Kalliopi – Artemis
title Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios
title_short Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios
title_full Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios
title_fullStr Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios
title_full_unstemmed Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization Ratios
title_sort monitoring ice crystals clouds: investigation of the lidar depolarization ratios
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2020-01-01
description A cirrus cloud dataset from a groundbased lidar in a sub-arctic station is analyzed in terms of the particle depolarization ratio. The depolarization values -δ- showed a broad distribution, ranging between 0.25 and 0.7, with a mean value of 0.38 ± 0.07. This variability is examined in correlation with temperature dependencies and the cirrus optical depth. Depolarization values greater than 0.45 are observed from temperatures between -60oC and -40oC, where horizontally oriented planar ice crystals are to be expected. Two case studies are also, discussed and analyzed in terms of depolarization height dependence.
url https://www.epj-conferences.org/articles/epjconf/pdf/2020/13/epjconf_ilrc292020_08013.pdf
work_keys_str_mv AT voudourikalliopiartemis monitoringicecrystalscloudsinvestigationofthelidardepolarizationratios
AT giannakakielina monitoringicecrystalscloudsinvestigationofthelidardepolarizationratios
AT komppulamika monitoringicecrystalscloudsinvestigationofthelidardepolarizationratios
AT gialitakianna monitoringicecrystalscloudsinvestigationofthelidardepolarizationratios
AT natsisathanasios monitoringicecrystalscloudsinvestigationofthelidardepolarizationratios
AT balisdimitris monitoringicecrystalscloudsinvestigationofthelidardepolarizationratios
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