Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau
International audience Abstract. The air at the surface of the high Antarctic Plateau is very cold, dry and clean. In such conditions the atmospheric moisture can significantly deviate from thermodynamic equilibrium conditions, and supersaturation with respect to ice can occur. Most conventional hum...
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ftinspolytechpar:oai:HAL:hal-03853656v1 2024-06-16T07:34:10+00:00 Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau Genthon, Christophe Veron, Dana Vignon, Etienne Madeleine, Jean-Baptiste Piard, Luc Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-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) 2022-01-05 https://hal.science/hal-03853656 https://hal.science/hal-03853656/document https://hal.science/hal-03853656/file/essd-2021-412.pdf https://doi.org/10.5194/essd-2021-412 en eng HAL CCSD Copernicus Publications info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-2021-412 hal-03853656 https://hal.science/hal-03853656 https://hal.science/hal-03853656/document https://hal.science/hal-03853656/file/essd-2021-412.pdf doi:10.5194/essd-2021-412 info:eu-repo/semantics/OpenAccess ISSN: 1866-3508 Earth System Science Data https://hal.science/hal-03853656 Earth System Science Data, 2022, ⟨10.5194/essd-2021-412⟩ [SDE]Environmental Sciences [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2022 ftinspolytechpar https://doi.org/10.5194/essd-2021-412 2024-05-19T23:42:58Z International audience Abstract. The air at the surface of the high Antarctic Plateau is very cold, dry and clean. In such conditions the atmospheric moisture can significantly deviate from thermodynamic equilibrium conditions, and supersaturation with respect to ice can occur. Most conventional humidity sensors for meteorological applications cannot report supersaturation in this environment. A simple approach for measuring supersaturation using conventional instruments, one being operated in a heated airflow, is presented. Since 2018, this instrumental setup was deployed at 3 levels in the lower ~40 m above the surface at Dome C on the high Antarctic Plateau. The 3-year 2018–2020 record (Genthon et al. 2021) is presented and analyzed for features such as the frequency of supersaturation with respect to ice, diurnal and seasonal variability, and vertical distribution. As supercooled liquid water droplets are frequently observed in clouds at the temperatures met on the high Antarctic Plateau, the distribution of relative humidity with respect to liquid water at Dome C is also discussed. It is suggested that, while not strictly mimicking the conditions of the high troposphere, the surface atmosphere on the Antarctic Plateau is a convenient natural laboratory to test parametrizations of cold microphysics predominantly developed to handle the genesis of high tropospheric clouds. Data are distributed on the PANGAEA data repository at https://doi.pangaea.de/10.1594/PANGAEA.939425 (Genthon et al., 2021). Article in Journal/Newspaper Antarc* Antarctic HAL de l'Institut Polytechnique de Paris Antarctic The Antarctic Handle The ENVELOPE(161.983,161.983,-78.000,-78.000) |
institution |
Open Polar |
collection |
HAL de l'Institut Polytechnique de Paris |
op_collection_id |
ftinspolytechpar |
language |
English |
topic |
[SDE]Environmental Sciences [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDE]Environmental Sciences [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Genthon, Christophe Veron, Dana Vignon, Etienne Madeleine, Jean-Baptiste Piard, Luc Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau |
topic_facet |
[SDE]Environmental Sciences [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Abstract. The air at the surface of the high Antarctic Plateau is very cold, dry and clean. In such conditions the atmospheric moisture can significantly deviate from thermodynamic equilibrium conditions, and supersaturation with respect to ice can occur. Most conventional humidity sensors for meteorological applications cannot report supersaturation in this environment. A simple approach for measuring supersaturation using conventional instruments, one being operated in a heated airflow, is presented. Since 2018, this instrumental setup was deployed at 3 levels in the lower ~40 m above the surface at Dome C on the high Antarctic Plateau. The 3-year 2018–2020 record (Genthon et al. 2021) is presented and analyzed for features such as the frequency of supersaturation with respect to ice, diurnal and seasonal variability, and vertical distribution. As supercooled liquid water droplets are frequently observed in clouds at the temperatures met on the high Antarctic Plateau, the distribution of relative humidity with respect to liquid water at Dome C is also discussed. It is suggested that, while not strictly mimicking the conditions of the high troposphere, the surface atmosphere on the Antarctic Plateau is a convenient natural laboratory to test parametrizations of cold microphysics predominantly developed to handle the genesis of high tropospheric clouds. Data are distributed on the PANGAEA data repository at https://doi.pangaea.de/10.1594/PANGAEA.939425 (Genthon et al., 2021). |
author2 |
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-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 |
Genthon, Christophe Veron, Dana Vignon, Etienne Madeleine, Jean-Baptiste Piard, Luc |
author_facet |
Genthon, Christophe Veron, Dana Vignon, Etienne Madeleine, Jean-Baptiste Piard, Luc |
author_sort |
Genthon, Christophe |
title |
Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau |
title_short |
Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau |
title_full |
Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau |
title_fullStr |
Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau |
title_full_unstemmed |
Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau |
title_sort |
water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of dome c, east antarctic plateau |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03853656 https://hal.science/hal-03853656/document https://hal.science/hal-03853656/file/essd-2021-412.pdf https://doi.org/10.5194/essd-2021-412 |
long_lat |
ENVELOPE(161.983,161.983,-78.000,-78.000) |
geographic |
Antarctic The Antarctic Handle The |
geographic_facet |
Antarctic The Antarctic Handle The |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 1866-3508 Earth System Science Data https://hal.science/hal-03853656 Earth System Science Data, 2022, ⟨10.5194/essd-2021-412⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-2021-412 hal-03853656 https://hal.science/hal-03853656 https://hal.science/hal-03853656/document https://hal.science/hal-03853656/file/essd-2021-412.pdf doi:10.5194/essd-2021-412 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/essd-2021-412 |
_version_ |
1802007878799720448 |