Snowfall in Northern Finland derives mostly from ice clouds
Clouds and precipitation play a critical role in the Earth's water cycle and energy budget. We present ground-level observations of snowfall coinciding with radiosonde launches in Sodankylä, Finland (67.367∘ N, 26.629∘ E) through a period of 8 cold months (October–April) in 2019 and 2020. They...
Published in: | Atmospheric Chemistry and Physics |
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Language: | English |
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Copernicus Publications
2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00062863 2023-05-15T17:42:31+02:00 Snowfall in Northern Finland derives mostly from ice clouds Mignani, Claudia Zimmermann, Lukas Kivi, Rigel Berne, Alexis Conen, Franz 2022-10 electronic https://doi.org/10.5194/acp-22-13551-2022 https://noa.gwlb.de/receive/cop_mods_00062863 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062029/acp-22-13551-2022.pdf https://acp.copernicus.org/articles/22/13551/2022/acp-22-13551-2022.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-22-13551-2022 https://noa.gwlb.de/receive/cop_mods_00062863 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062029/acp-22-13551-2022.pdf https://acp.copernicus.org/articles/22/13551/2022/acp-22-13551-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/acp-22-13551-2022 2022-10-23T23:12:13Z Clouds and precipitation play a critical role in the Earth's water cycle and energy budget. We present ground-level observations of snowfall coinciding with radiosonde launches in Sodankylä, Finland (67.367∘ N, 26.629∘ E) through a period of 8 cold months (October–April) in 2019 and 2020. They comprise 7401 depositing snow particles detected by a snowflake camera and 468 radiosonde profiles. Our results show that precipitating clouds were extending from ground to at least 2.7 km in altitude. Approximately one-quarter of them were mixed phase and the rest were likely fully glaciated. Estimations of the cloud top temperatures indicate that in roughly half of the snowfall events, ice might have been initiated through heterogeneous freezing. For such cases, the predicted ice-nucleating particle concentrations active at cloud top temperatures could explain the analysed ice crystal particle concentrations observed near ground in approximately one- to two-thirds of the cases. For the rest, ice multiplication was likely active. In a warmer climate, the relative proportion of solid to liquid cloud particles will probably decrease, with implications on the radiation balance. Article in Journal/Newspaper Northern Finland Sodankylä Niedersächsisches Online-Archiv NOA Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Atmospheric Chemistry and Physics 22 20 13551 13568 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Mignani, Claudia Zimmermann, Lukas Kivi, Rigel Berne, Alexis Conen, Franz Snowfall in Northern Finland derives mostly from ice clouds |
topic_facet |
article Verlagsveröffentlichung |
description |
Clouds and precipitation play a critical role in the Earth's water cycle and energy budget. We present ground-level observations of snowfall coinciding with radiosonde launches in Sodankylä, Finland (67.367∘ N, 26.629∘ E) through a period of 8 cold months (October–April) in 2019 and 2020. They comprise 7401 depositing snow particles detected by a snowflake camera and 468 radiosonde profiles. Our results show that precipitating clouds were extending from ground to at least 2.7 km in altitude. Approximately one-quarter of them were mixed phase and the rest were likely fully glaciated. Estimations of the cloud top temperatures indicate that in roughly half of the snowfall events, ice might have been initiated through heterogeneous freezing. For such cases, the predicted ice-nucleating particle concentrations active at cloud top temperatures could explain the analysed ice crystal particle concentrations observed near ground in approximately one- to two-thirds of the cases. For the rest, ice multiplication was likely active. In a warmer climate, the relative proportion of solid to liquid cloud particles will probably decrease, with implications on the radiation balance. |
format |
Article in Journal/Newspaper |
author |
Mignani, Claudia Zimmermann, Lukas Kivi, Rigel Berne, Alexis Conen, Franz |
author_facet |
Mignani, Claudia Zimmermann, Lukas Kivi, Rigel Berne, Alexis Conen, Franz |
author_sort |
Mignani, Claudia |
title |
Snowfall in Northern Finland derives mostly from ice clouds |
title_short |
Snowfall in Northern Finland derives mostly from ice clouds |
title_full |
Snowfall in Northern Finland derives mostly from ice clouds |
title_fullStr |
Snowfall in Northern Finland derives mostly from ice clouds |
title_full_unstemmed |
Snowfall in Northern Finland derives mostly from ice clouds |
title_sort |
snowfall in northern finland derives mostly from ice clouds |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-22-13551-2022 https://noa.gwlb.de/receive/cop_mods_00062863 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062029/acp-22-13551-2022.pdf https://acp.copernicus.org/articles/22/13551/2022/acp-22-13551-2022.pdf |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Sodankylä |
geographic_facet |
Sodankylä |
genre |
Northern Finland Sodankylä |
genre_facet |
Northern Finland Sodankylä |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-22-13551-2022 https://noa.gwlb.de/receive/cop_mods_00062863 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062029/acp-22-13551-2022.pdf https://acp.copernicus.org/articles/22/13551/2022/acp-22-13551-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/acp-22-13551-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
20 |
container_start_page |
13551 |
op_container_end_page |
13568 |
_version_ |
1766144385041301504 |