Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014
This study presents Cloudnet retrievals of Arctic clouds from measurements conducted during a 3-month research expedition along the Siberian shelf during summer and autumn 2014. During autumn, we find a strong reduction in the occurrence of liquid clouds and an increase for both mixed-phase and ice...
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ftdoajarticles:oai:doaj.org/article:5ce32006ba3a4fe4ad10c4191c83ee6a 2023-05-15T15:03:44+02:00 Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014 P. Achtert E. J. O'Connor I. M. Brooks G. Sotiropoulou M. D. Shupe B. Pospichal B. J. Brooks M. Tjernström 2020-12-01T00:00:00Z https://doi.org/10.5194/acp-20-14983-2020 https://doaj.org/article/5ce32006ba3a4fe4ad10c4191c83ee6a EN eng Copernicus Publications https://acp.copernicus.org/articles/20/14983/2020/acp-20-14983-2020.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-20-14983-2020 1680-7316 1680-7324 https://doaj.org/article/5ce32006ba3a4fe4ad10c4191c83ee6a Atmospheric Chemistry and Physics, Vol 20, Pp 14983-15002 (2020) Physics QC1-999 Chemistry QD1-999 article 2020 ftdoajarticles https://doi.org/10.5194/acp-20-14983-2020 2022-12-31T06:12:33Z This study presents Cloudnet retrievals of Arctic clouds from measurements conducted during a 3-month research expedition along the Siberian shelf during summer and autumn 2014. During autumn, we find a strong reduction in the occurrence of liquid clouds and an increase for both mixed-phase and ice clouds at low levels compared to summer. About 80 % of all liquid clouds observed during the research cruise show a liquid water path below the infrared black body limit of approximately 50 g m −2 . The majority of mixed-phase and ice clouds had an ice water path below 20 g m −2 . Cloud properties are analysed with respect to cloud-top temperature and boundary layer structure. Changes in these parameters have little effect on the geometric thickness of liquid clouds while mixed-phase clouds during warm-air advection events are generally thinner than when such events were absent. Cloud-top temperatures are very similar for all mixed-phase clouds. However, more cases of lower cloud-top temperature were observed in the absence of warm-air advection. Profiles of liquid and ice water content are normalized with respect to cloud base and height. For liquid water clouds, the liquid water content profile reveals a strong increase with height with a maximum within the upper quarter of the clouds followed by a sharp decrease towards cloud top. Liquid water content is lowest for clouds observed below an inversion during warm-air advection events. Most mixed-phase clouds show a liquid water content profile with a very similar shape to that of liquid clouds but with lower maximum values during events with warm air above the planetary boundary layer. The normalized ice water content profiles in mixed-phase clouds look different from those of liquid water content. They show a wider range in maximum values with the lowest ice water content for clouds below an inversion and the highest values for clouds above or extending through an inversion. The ice water content profile generally peaks at a height below the peak in the liquid water ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 20 23 14983 15002 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 P. Achtert E. J. O'Connor I. M. Brooks G. Sotiropoulou M. D. Shupe B. Pospichal B. J. Brooks M. Tjernström Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014 |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
This study presents Cloudnet retrievals of Arctic clouds from measurements conducted during a 3-month research expedition along the Siberian shelf during summer and autumn 2014. During autumn, we find a strong reduction in the occurrence of liquid clouds and an increase for both mixed-phase and ice clouds at low levels compared to summer. About 80 % of all liquid clouds observed during the research cruise show a liquid water path below the infrared black body limit of approximately 50 g m −2 . The majority of mixed-phase and ice clouds had an ice water path below 20 g m −2 . Cloud properties are analysed with respect to cloud-top temperature and boundary layer structure. Changes in these parameters have little effect on the geometric thickness of liquid clouds while mixed-phase clouds during warm-air advection events are generally thinner than when such events were absent. Cloud-top temperatures are very similar for all mixed-phase clouds. However, more cases of lower cloud-top temperature were observed in the absence of warm-air advection. Profiles of liquid and ice water content are normalized with respect to cloud base and height. For liquid water clouds, the liquid water content profile reveals a strong increase with height with a maximum within the upper quarter of the clouds followed by a sharp decrease towards cloud top. Liquid water content is lowest for clouds observed below an inversion during warm-air advection events. Most mixed-phase clouds show a liquid water content profile with a very similar shape to that of liquid clouds but with lower maximum values during events with warm air above the planetary boundary layer. The normalized ice water content profiles in mixed-phase clouds look different from those of liquid water content. They show a wider range in maximum values with the lowest ice water content for clouds below an inversion and the highest values for clouds above or extending through an inversion. The ice water content profile generally peaks at a height below the peak in the liquid water ... |
format |
Article in Journal/Newspaper |
author |
P. Achtert E. J. O'Connor I. M. Brooks G. Sotiropoulou M. D. Shupe B. Pospichal B. J. Brooks M. Tjernström |
author_facet |
P. Achtert E. J. O'Connor I. M. Brooks G. Sotiropoulou M. D. Shupe B. Pospichal B. J. Brooks M. Tjernström |
author_sort |
P. Achtert |
title |
Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014 |
title_short |
Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014 |
title_full |
Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014 |
title_fullStr |
Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014 |
title_full_unstemmed |
Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014 |
title_sort |
properties of arctic liquid and mixed-phase clouds from shipborne cloudnet observations during acse 2014 |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/acp-20-14983-2020 https://doaj.org/article/5ce32006ba3a4fe4ad10c4191c83ee6a |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 20, Pp 14983-15002 (2020) |
op_relation |
https://acp.copernicus.org/articles/20/14983/2020/acp-20-14983-2020.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-20-14983-2020 1680-7316 1680-7324 https://doaj.org/article/5ce32006ba3a4fe4ad10c4191c83ee6a |
op_doi |
https://doi.org/10.5194/acp-20-14983-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
23 |
container_start_page |
14983 |
op_container_end_page |
15002 |
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1766335587573301248 |