On ice supersaturation over the Arctic
We study ice-supersaturation in the cold (<-38°C) arctic troposphere and lower stratosphere using high-resolution quality-controlled radiosonde data. On average, ice supersaturation occurs in about 40 % to 60 % of the profiles with frequency of occurrence increasing with geographic latitude. The...
Published in: | Meteorologische Zeitschrift |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Borntraeger Science Publishers
2020
|
Subjects: | |
Online Access: | https://elib.dlr.de/134905/ https://elib.dlr.de/134905/1/Gierens-etal-MZ2020.On_ice_supersaturation_over_the_Arctic.pdf https://www.schweizerbart.de/papers/metz/detail/prepub/93340/On_ice_supersaturation_over_the_Arctic |
id |
ftdlr:oai:elib.dlr.de:134905 |
---|---|
record_format |
openpolar |
spelling |
ftdlr:oai:elib.dlr.de:134905 2023-11-12T04:09:53+01:00 On ice supersaturation over the Arctic Gierens, Klaus Martin Wilhelm, Lena Sommer, Michael Weaver, Dan 2020 application/pdf https://elib.dlr.de/134905/ https://elib.dlr.de/134905/1/Gierens-etal-MZ2020.On_ice_supersaturation_over_the_Arctic.pdf https://www.schweizerbart.de/papers/metz/detail/prepub/93340/On_ice_supersaturation_over_the_Arctic en eng Borntraeger Science Publishers https://elib.dlr.de/134905/1/Gierens-etal-MZ2020.On_ice_supersaturation_over_the_Arctic.pdf Gierens, Klaus Martin und Wilhelm, Lena und Sommer, Michael und Weaver, Dan (2020) On ice supersaturation over the Arctic. Meteorologische Zeitschrift, Seiten 1-12. Borntraeger Science Publishers. doi:10.1127/metz/2020/1012 <https://doi.org/10.1127/metz/2020/1012>. ISSN 0941-2948. Institut für Physik der Atmosphäre Erdsystem-Modellierung Zeitschriftenbeitrag PeerReviewed 2020 ftdlr https://doi.org/10.1127/metz/2020/1012 2023-10-30T00:23:57Z We study ice-supersaturation in the cold (<-38°C) arctic troposphere and lower stratosphere using high-resolution quality-controlled radiosonde data. On average, ice supersaturation occurs in about 40 % to 60 % of the profiles with frequency of occurrence increasing with geographic latitude. The frequencies of occurrence show (so far) no long-term trends. The seasonal cycles are not very clear but seem to reverse between more southern to more northern locations. Most profiles with ice-supersaturation have more than one supersaturated layer; this stacking increases as well to the north. Due to the 1‑Hz resolution of the data we find ice-supersaturated layers a few metres thick, but very thick layers extending over almost 5 km are found as well. Median thickness values are smaller than in previous studies, between 100 m and 200 m. The far northern locations display a strong seasonal cycle of the mean layer thickness with maxima in the polar night, probably caused by radiation cooling. Ice supersaturation occurs most frequently directly beneath the tropopause in an upper-tropospheric layer whose depth varies strongly seasonally, being thin in summer and much thicker in winter. Due to the very low temperatures in the Arctic ice supersaturation can occur at the ground. Temperatures in arctic supersaturated layers typically range from -40 to -60 °C, but can occasionally be lower than -70 °C. Water vapour volume mixing ratios range from a few to about 500 ppmv. The relative humidity with respect to ice can exceed 150-160 %. The thickness of supersaturated layers is weakly correlated with its maximum supersaturation, but not with temperature and absolute humidity. Article in Journal/Newspaper Arctic Arctic polar night German Aerospace Center: elib - DLR electronic library Arctic Meteorologische Zeitschrift 29 2 165 176 |
institution |
Open Polar |
collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Institut für Physik der Atmosphäre Erdsystem-Modellierung |
spellingShingle |
Institut für Physik der Atmosphäre Erdsystem-Modellierung Gierens, Klaus Martin Wilhelm, Lena Sommer, Michael Weaver, Dan On ice supersaturation over the Arctic |
topic_facet |
Institut für Physik der Atmosphäre Erdsystem-Modellierung |
description |
We study ice-supersaturation in the cold (<-38°C) arctic troposphere and lower stratosphere using high-resolution quality-controlled radiosonde data. On average, ice supersaturation occurs in about 40 % to 60 % of the profiles with frequency of occurrence increasing with geographic latitude. The frequencies of occurrence show (so far) no long-term trends. The seasonal cycles are not very clear but seem to reverse between more southern to more northern locations. Most profiles with ice-supersaturation have more than one supersaturated layer; this stacking increases as well to the north. Due to the 1‑Hz resolution of the data we find ice-supersaturated layers a few metres thick, but very thick layers extending over almost 5 km are found as well. Median thickness values are smaller than in previous studies, between 100 m and 200 m. The far northern locations display a strong seasonal cycle of the mean layer thickness with maxima in the polar night, probably caused by radiation cooling. Ice supersaturation occurs most frequently directly beneath the tropopause in an upper-tropospheric layer whose depth varies strongly seasonally, being thin in summer and much thicker in winter. Due to the very low temperatures in the Arctic ice supersaturation can occur at the ground. Temperatures in arctic supersaturated layers typically range from -40 to -60 °C, but can occasionally be lower than -70 °C. Water vapour volume mixing ratios range from a few to about 500 ppmv. The relative humidity with respect to ice can exceed 150-160 %. The thickness of supersaturated layers is weakly correlated with its maximum supersaturation, but not with temperature and absolute humidity. |
format |
Article in Journal/Newspaper |
author |
Gierens, Klaus Martin Wilhelm, Lena Sommer, Michael Weaver, Dan |
author_facet |
Gierens, Klaus Martin Wilhelm, Lena Sommer, Michael Weaver, Dan |
author_sort |
Gierens, Klaus Martin |
title |
On ice supersaturation over the Arctic |
title_short |
On ice supersaturation over the Arctic |
title_full |
On ice supersaturation over the Arctic |
title_fullStr |
On ice supersaturation over the Arctic |
title_full_unstemmed |
On ice supersaturation over the Arctic |
title_sort |
on ice supersaturation over the arctic |
publisher |
Borntraeger Science Publishers |
publishDate |
2020 |
url |
https://elib.dlr.de/134905/ https://elib.dlr.de/134905/1/Gierens-etal-MZ2020.On_ice_supersaturation_over_the_Arctic.pdf https://www.schweizerbart.de/papers/metz/detail/prepub/93340/On_ice_supersaturation_over_the_Arctic |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic polar night |
genre_facet |
Arctic Arctic polar night |
op_relation |
https://elib.dlr.de/134905/1/Gierens-etal-MZ2020.On_ice_supersaturation_over_the_Arctic.pdf Gierens, Klaus Martin und Wilhelm, Lena und Sommer, Michael und Weaver, Dan (2020) On ice supersaturation over the Arctic. Meteorologische Zeitschrift, Seiten 1-12. Borntraeger Science Publishers. doi:10.1127/metz/2020/1012 <https://doi.org/10.1127/metz/2020/1012>. ISSN 0941-2948. |
op_doi |
https://doi.org/10.1127/metz/2020/1012 |
container_title |
Meteorologische Zeitschrift |
container_volume |
29 |
container_issue |
2 |
container_start_page |
165 |
op_container_end_page |
176 |
_version_ |
1782329646583382016 |