Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica
Episodes of thick cloud and diamond dust/ice fog were observed during 15 March to 8 April 2011 and 4 to 5 March 2013 in the atmosphere above Dome C (Concordia station, Antarctica; 75°06′ S, 123°21′ E; 3233 m a.m.s.l.). The objectives of the paper are mainly to investigate the processes that cause th...
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ftenea:oai:iris.enea.it:20.500.12079/1857 2024-04-21T07:47:10+00:00 Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica Grigioni, P. Grigioni, P. 2017 https://hdl.handle.net/20.500.12079/1857 https://doi.org/10.5194/acp-17-5221-2017 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018549953&doi=10.5194%2facp-17-5221-2017&partnerID=40&md5=67b0c16920925b261a837c44923f5b23 en eng Copernicus GmbH volume:17 issue:8 numberofpages:5221 - 5237 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/20.500.12079/1857 doi:10.5194/acp-17-5221-2017 info:eu-repo/semantics/altIdentifier/scopus/Scopus ID: 2-s2.0-85018549953 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018549953&doi=10.5194%2facp-17-5221-2017&partnerID=40&md5=67b0c16920925b261a837c44923f5b23 info:eu-repo/semantics/article 2017 ftenea https://doi.org/20.500.12079/185710.5194/acp-17-5221-2017 2024-03-27T15:05:15Z Episodes of thick cloud and diamond dust/ice fog were observed during 15 March to 8 April 2011 and 4 to 5 March 2013 in the atmosphere above Dome C (Concordia station, Antarctica; 75°06′ S, 123°21′ E; 3233 m a.m.s.l.). The objectives of the paper are mainly to investigate the processes that cause these episodes based on observations and to verify whether operational models can evaluate them. The measurements were obtained from the following instruments: (1) a ground-based microwave radiometer (HAMSTRAD, H2O Antarctica Microwave Stratospheric and Tropospheric Radiometers) installed at Dome C that provided vertical profiles of tropospheric temperature and absolute humidity every 7 min; (2) daily radiosoundings launched at 12:00 UTC at Dome C; (3) a tropospheric aerosol lidar that provides aerosol depolarization ratio along the vertical at Dome C; (4) down-and upward short-and long-wave radiations as provided by the Baseline Surface Radiation Network (BSRN) facilities; (5) an ICE-CAMERA to detect at an hourly rate the size of the ice crystal grains deposited at the surface of the camera; and (6) space-borne aerosol depolarization ratio from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) lidar aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) platform along orbits close to the Dome C station. The time evolution of the atmosphere has also been evaluated by considering the outputs from the mesoscale AROME and the global-scale ARPEGE meteorological models. Thick clouds are detected during the warm and wet periods (24-26 March 2011 and 4 March 2013) with high depolarization ratios (greater than 30 %) from the surface to 5-7 km above the ground associated with precipitation of ice particles and the presence of a supercooled liquid water (depolarization less than 10 %) clouds. Diamond dust and/or ice fog are detected during the cold and dry periods (5 April 2011 and 5 March 2013) with high depolarization ratios (greater than 30 %) in the planetary boundary layer to a ... Article in Journal/Newspaper Antarc* Antarctica ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile) Atmospheric Chemistry and Physics 17 8 5221 5237 |
institution |
Open Polar |
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ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile) |
op_collection_id |
ftenea |
language |
English |
description |
Episodes of thick cloud and diamond dust/ice fog were observed during 15 March to 8 April 2011 and 4 to 5 March 2013 in the atmosphere above Dome C (Concordia station, Antarctica; 75°06′ S, 123°21′ E; 3233 m a.m.s.l.). The objectives of the paper are mainly to investigate the processes that cause these episodes based on observations and to verify whether operational models can evaluate them. The measurements were obtained from the following instruments: (1) a ground-based microwave radiometer (HAMSTRAD, H2O Antarctica Microwave Stratospheric and Tropospheric Radiometers) installed at Dome C that provided vertical profiles of tropospheric temperature and absolute humidity every 7 min; (2) daily radiosoundings launched at 12:00 UTC at Dome C; (3) a tropospheric aerosol lidar that provides aerosol depolarization ratio along the vertical at Dome C; (4) down-and upward short-and long-wave radiations as provided by the Baseline Surface Radiation Network (BSRN) facilities; (5) an ICE-CAMERA to detect at an hourly rate the size of the ice crystal grains deposited at the surface of the camera; and (6) space-borne aerosol depolarization ratio from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) lidar aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) platform along orbits close to the Dome C station. The time evolution of the atmosphere has also been evaluated by considering the outputs from the mesoscale AROME and the global-scale ARPEGE meteorological models. Thick clouds are detected during the warm and wet periods (24-26 March 2011 and 4 March 2013) with high depolarization ratios (greater than 30 %) from the surface to 5-7 km above the ground associated with precipitation of ice particles and the presence of a supercooled liquid water (depolarization less than 10 %) clouds. Diamond dust and/or ice fog are detected during the cold and dry periods (5 April 2011 and 5 March 2013) with high depolarization ratios (greater than 30 %) in the planetary boundary layer to a ... |
author2 |
Grigioni, P. |
format |
Article in Journal/Newspaper |
author |
Grigioni, P. |
spellingShingle |
Grigioni, P. Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica |
author_facet |
Grigioni, P. |
author_sort |
Grigioni, P. |
title |
Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica |
title_short |
Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica |
title_full |
Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica |
title_fullStr |
Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica |
title_full_unstemmed |
Genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above Dome C, Antarctica |
title_sort |
genesis of diamond dust, ice fog and thick cloud episodes observed and modelled above dome c, antarctica |
publisher |
Copernicus GmbH |
publishDate |
2017 |
url |
https://hdl.handle.net/20.500.12079/1857 https://doi.org/10.5194/acp-17-5221-2017 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018549953&doi=10.5194%2facp-17-5221-2017&partnerID=40&md5=67b0c16920925b261a837c44923f5b23 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
volume:17 issue:8 numberofpages:5221 - 5237 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/20.500.12079/1857 doi:10.5194/acp-17-5221-2017 info:eu-repo/semantics/altIdentifier/scopus/Scopus ID: 2-s2.0-85018549953 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018549953&doi=10.5194%2facp-17-5221-2017&partnerID=40&md5=67b0c16920925b261a837c44923f5b23 |
op_doi |
https://doi.org/20.500.12079/185710.5194/acp-17-5221-2017 |
container_title |
Atmospheric Chemistry and Physics |
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17 |
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8 |
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5221 |
op_container_end_page |
5237 |
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