The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study
The mostly ice covered Arctic Ocean is dominated by low‐level liquid‐ or mixed‐phase clouds. Turbulence within stratocumulus is primarily driven by cloud top cooling that induces convective instability. Using a suite of in situ and remote sensing instruments we characterize turbulent mixing in Arcti...
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American Geophysical Union
2017
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ftleedsuniv:oai:eprints.whiterose.ac.uk:121763 2023-05-15T14:22:33+02:00 The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study Brooks, IM Tjernström, M Persson, POG Shupe, MD Atkinson, RA Canut, G Birch, CE Mauritsen, T Sedlar, J Brooks, BJ 2017-09-27 text https://eprints.whiterose.ac.uk/121763/ https://eprints.whiterose.ac.uk/121763/8/Brooks_et_al-SEP2017-Journal_of_Geophysical_Research__Atmospheres.pdf en eng American Geophysical Union https://eprints.whiterose.ac.uk/121763/8/Brooks_et_al-SEP2017-Journal_of_Geophysical_Research__Atmospheres.pdf Brooks, IM orcid.org/0000-0002-5051-1322 , Tjernström, M, Persson, POG et al. (7 more authors) (2017) The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study. Journal of Geophysical Research: Atmospheres, 122 (18). pp. 9685-9704. ISSN 2169-897X cc_by_4 CC-BY Article NonPeerReviewed 2017 ftleedsuniv 2023-01-30T21:59:05Z The mostly ice covered Arctic Ocean is dominated by low‐level liquid‐ or mixed‐phase clouds. Turbulence within stratocumulus is primarily driven by cloud top cooling that induces convective instability. Using a suite of in situ and remote sensing instruments we characterize turbulent mixing in Arctic stratocumulus, and for the first time we estimate profiles of the gradient Richardson number at relatively high resolution in both time (10 min) and altitude (10 m). It is found that the mixing occurs both within the cloud, as expected, and by wind shear instability near the surface. About 75% of the time these two layers are separated by a stably stratified inversion at 100–200 m altitude. Exceptions are associated with low cloud bases that allow the cloud‐driven turbulence to reach the surface. The results imply that turbulent coupling between the surface and the cloud is sporadic or intermittent. Article in Journal/Newspaper Arctic Arctic Arctic Ocean White Rose Research Online (Universities of Leeds, Sheffield & York) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
The mostly ice covered Arctic Ocean is dominated by low‐level liquid‐ or mixed‐phase clouds. Turbulence within stratocumulus is primarily driven by cloud top cooling that induces convective instability. Using a suite of in situ and remote sensing instruments we characterize turbulent mixing in Arctic stratocumulus, and for the first time we estimate profiles of the gradient Richardson number at relatively high resolution in both time (10 min) and altitude (10 m). It is found that the mixing occurs both within the cloud, as expected, and by wind shear instability near the surface. About 75% of the time these two layers are separated by a stably stratified inversion at 100–200 m altitude. Exceptions are associated with low cloud bases that allow the cloud‐driven turbulence to reach the surface. The results imply that turbulent coupling between the surface and the cloud is sporadic or intermittent. |
format |
Article in Journal/Newspaper |
author |
Brooks, IM Tjernström, M Persson, POG Shupe, MD Atkinson, RA Canut, G Birch, CE Mauritsen, T Sedlar, J Brooks, BJ |
spellingShingle |
Brooks, IM Tjernström, M Persson, POG Shupe, MD Atkinson, RA Canut, G Birch, CE Mauritsen, T Sedlar, J Brooks, BJ The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study |
author_facet |
Brooks, IM Tjernström, M Persson, POG Shupe, MD Atkinson, RA Canut, G Birch, CE Mauritsen, T Sedlar, J Brooks, BJ |
author_sort |
Brooks, IM |
title |
The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study |
title_short |
The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study |
title_full |
The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study |
title_fullStr |
The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study |
title_full_unstemmed |
The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study |
title_sort |
turbulent structure of the arctic summer boundary layer during the arctic summer cloud‐ocean study |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
https://eprints.whiterose.ac.uk/121763/ https://eprints.whiterose.ac.uk/121763/8/Brooks_et_al-SEP2017-Journal_of_Geophysical_Research__Atmospheres.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_relation |
https://eprints.whiterose.ac.uk/121763/8/Brooks_et_al-SEP2017-Journal_of_Geophysical_Research__Atmospheres.pdf Brooks, IM orcid.org/0000-0002-5051-1322 , Tjernström, M, Persson, POG et al. (7 more authors) (2017) The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud‐Ocean Study. Journal of Geophysical Research: Atmospheres, 122 (18). pp. 9685-9704. ISSN 2169-897X |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766295113781215232 |