Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact
Clouds affect the Earth climate with an impact that depends on the cloud nature (solid/ liquid water). Although the Antarctic climate is changing rapidly, cloud observations are sparse over Antarctica due to few ground stations and satellite observations. The Concordia station is located on the East...
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ftcopernicus:oai:publications.copernicus.org:acpd104631 2023-05-15T14:02:18+02:00 Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact Ricaud, Philippe Guasta, Massimo Lupi, Angelo Roehrig, Romain Bazile, Eric Durand, Pierre Attié, Jean-Luc Nicosia, Alessia Grigioni, Paolo 2022-06-28 application/pdf https://doi.org/10.5194/acp-2022-433 https://acp.copernicus.org/preprints/acp-2022-433/ eng eng doi:10.5194/acp-2022-433 https://acp.copernicus.org/preprints/acp-2022-433/ eISSN: 1680-7324 Text 2022 ftcopernicus https://doi.org/10.5194/acp-2022-433 2022-07-04T16:22:42Z Clouds affect the Earth climate with an impact that depends on the cloud nature (solid/ liquid water). Although the Antarctic climate is changing rapidly, cloud observations are sparse over Antarctica due to few ground stations and satellite observations. The Concordia station is located on the East Antarctic Plateau (75° S, 123° E, 3233 m above mean sea level), one of the driest and coldest places on Earth. We used observations of clouds, temperature, liquid water and surface radiation performed at Concordia during 4 austral summers (December 2018–2021) to analyze the link between liquid water and temperature and its impact on surface radiation in the presence of supercooled liquid water (liquid water for temperature less than 0 °C) clouds (SLWCs). Our analysis shows that, within SLWCs, temperature logarithmically increases from -36.0 °C to -16.0 °C when liquid water path increases from 1.0 to 14.0 g m -2 , and SLWCs positively impact the net surface radiation, which logarithmically increases by 0.0 to 50.0 W m -2 when liquid water path increases from 1.7 to 3.0 g m -2 . We finally estimate that SLWCs have a great potential radiative impact over Antarctica whatever the season considered, up to 5.0 W m -2 over the Eastern Antarctic Plateau and up to 30 W m -2 over the Antarctic Peninsula in summer. Text Antarc* Antarctic Antarctic Peninsula Antarctica Copernicus Publications: E-Journals Antarctic Antarctic Peninsula Austral Concordia Station ENVELOPE(123.333,123.333,-75.100,-75.100) The Antarctic |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
Clouds affect the Earth climate with an impact that depends on the cloud nature (solid/ liquid water). Although the Antarctic climate is changing rapidly, cloud observations are sparse over Antarctica due to few ground stations and satellite observations. The Concordia station is located on the East Antarctic Plateau (75° S, 123° E, 3233 m above mean sea level), one of the driest and coldest places on Earth. We used observations of clouds, temperature, liquid water and surface radiation performed at Concordia during 4 austral summers (December 2018–2021) to analyze the link between liquid water and temperature and its impact on surface radiation in the presence of supercooled liquid water (liquid water for temperature less than 0 °C) clouds (SLWCs). Our analysis shows that, within SLWCs, temperature logarithmically increases from -36.0 °C to -16.0 °C when liquid water path increases from 1.0 to 14.0 g m -2 , and SLWCs positively impact the net surface radiation, which logarithmically increases by 0.0 to 50.0 W m -2 when liquid water path increases from 1.7 to 3.0 g m -2 . We finally estimate that SLWCs have a great potential radiative impact over Antarctica whatever the season considered, up to 5.0 W m -2 over the Eastern Antarctic Plateau and up to 30 W m -2 over the Antarctic Peninsula in summer. |
format |
Text |
author |
Ricaud, Philippe Guasta, Massimo Lupi, Angelo Roehrig, Romain Bazile, Eric Durand, Pierre Attié, Jean-Luc Nicosia, Alessia Grigioni, Paolo |
spellingShingle |
Ricaud, Philippe Guasta, Massimo Lupi, Angelo Roehrig, Romain Bazile, Eric Durand, Pierre Attié, Jean-Luc Nicosia, Alessia Grigioni, Paolo Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact |
author_facet |
Ricaud, Philippe Guasta, Massimo Lupi, Angelo Roehrig, Romain Bazile, Eric Durand, Pierre Attié, Jean-Luc Nicosia, Alessia Grigioni, Paolo |
author_sort |
Ricaud, Philippe |
title |
Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact |
title_short |
Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact |
title_full |
Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact |
title_fullStr |
Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact |
title_full_unstemmed |
Supercooled liquid water clouds observed over Dome C, Antarctica: temperature sensitivity and surface radiation impact |
title_sort |
supercooled liquid water clouds observed over dome c, antarctica: temperature sensitivity and surface radiation impact |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-2022-433 https://acp.copernicus.org/preprints/acp-2022-433/ |
long_lat |
ENVELOPE(123.333,123.333,-75.100,-75.100) |
geographic |
Antarctic Antarctic Peninsula Austral Concordia Station The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral Concordia Station The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-2022-433 https://acp.copernicus.org/preprints/acp-2022-433/ |
op_doi |
https://doi.org/10.5194/acp-2022-433 |
_version_ |
1766272504839536640 |