The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC
The important roles that the atmospheric boundary layer (ABL) plays in the central Arctic climate system have been recognized, but the atmospheric boundary layer height (ABLH), defined as the layer of continuous turbulence adjacent to the surface, has rarely been investigated. Using a year-round rad...
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ftdoajarticles:oai:doaj.org/article:ea64a8001cb44a1fb1345d0fd96490d5 2023-09-05T13:16:21+02:00 The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC S. Peng Q. Yang M. D. Shupe X. Xi B. Han D. Chen S. Dahlke C. Liu 2023-08-01T00:00:00Z https://doi.org/10.5194/acp-23-8683-2023 https://doaj.org/article/ea64a8001cb44a1fb1345d0fd96490d5 EN eng Copernicus Publications https://acp.copernicus.org/articles/23/8683/2023/acp-23-8683-2023.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-23-8683-2023 1680-7316 1680-7324 https://doaj.org/article/ea64a8001cb44a1fb1345d0fd96490d5 Atmospheric Chemistry and Physics, Vol 23, Pp 8683-8703 (2023) Physics QC1-999 Chemistry QD1-999 article 2023 ftdoajarticles https://doi.org/10.5194/acp-23-8683-2023 2023-08-13T00:39:46Z The important roles that the atmospheric boundary layer (ABL) plays in the central Arctic climate system have been recognized, but the atmospheric boundary layer height (ABLH), defined as the layer of continuous turbulence adjacent to the surface, has rarely been investigated. Using a year-round radiosonde dataset during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition, we improve a Richardson-number-based algorithm that takes cloud effects into consideration and subsequently analyze the characteristics and variability of the ABLH over the Arctic Ocean. The results reveal that the annual cycle is clearly characterized by a distinct peak in May and two respective minima in January and July. This annual variation in the ABLH is primarily controlled by the evolution of the ABL thermal structure. Temperature inversions in the winter and summer are intensified by seasonal radiative cooling and warm-air advection with the surface temperature constrained by melting, respectively, leading to the low ABLH at these times. Meteorological and turbulence variables also play a significant role in ABLH variation, including the near-surface potential temperature gradient, friction velocity, and turbulent kinetic energy (TKE) dissipation rate. In addition, the MOSAiC ABLH is more suppressed than the ABLH during the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment in the summer, which indicates that there is large variability in the Arctic ABL structure during the summer melting season. Article in Journal/Newspaper Arctic Arctic Ocean Surface Heat Budget of the Arctic Ocean Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Atmospheric Chemistry and Physics 23 15 8683 8703 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 S. Peng Q. Yang M. D. Shupe X. Xi B. Han D. Chen S. Dahlke C. Liu The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The important roles that the atmospheric boundary layer (ABL) plays in the central Arctic climate system have been recognized, but the atmospheric boundary layer height (ABLH), defined as the layer of continuous turbulence adjacent to the surface, has rarely been investigated. Using a year-round radiosonde dataset during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition, we improve a Richardson-number-based algorithm that takes cloud effects into consideration and subsequently analyze the characteristics and variability of the ABLH over the Arctic Ocean. The results reveal that the annual cycle is clearly characterized by a distinct peak in May and two respective minima in January and July. This annual variation in the ABLH is primarily controlled by the evolution of the ABL thermal structure. Temperature inversions in the winter and summer are intensified by seasonal radiative cooling and warm-air advection with the surface temperature constrained by melting, respectively, leading to the low ABLH at these times. Meteorological and turbulence variables also play a significant role in ABLH variation, including the near-surface potential temperature gradient, friction velocity, and turbulent kinetic energy (TKE) dissipation rate. In addition, the MOSAiC ABLH is more suppressed than the ABLH during the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment in the summer, which indicates that there is large variability in the Arctic ABL structure during the summer melting season. |
format |
Article in Journal/Newspaper |
author |
S. Peng Q. Yang M. D. Shupe X. Xi B. Han D. Chen S. Dahlke C. Liu |
author_facet |
S. Peng Q. Yang M. D. Shupe X. Xi B. Han D. Chen S. Dahlke C. Liu |
author_sort |
S. Peng |
title |
The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC |
title_short |
The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC |
title_full |
The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC |
title_fullStr |
The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC |
title_full_unstemmed |
The characteristics of atmospheric boundary layer height over the Arctic Ocean during MOSAiC |
title_sort |
characteristics of atmospheric boundary layer height over the arctic ocean during mosaic |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/acp-23-8683-2023 https://doaj.org/article/ea64a8001cb44a1fb1345d0fd96490d5 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Surface Heat Budget of the Arctic Ocean |
genre_facet |
Arctic Arctic Ocean Surface Heat Budget of the Arctic Ocean |
op_source |
Atmospheric Chemistry and Physics, Vol 23, Pp 8683-8703 (2023) |
op_relation |
https://acp.copernicus.org/articles/23/8683/2023/acp-23-8683-2023.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-23-8683-2023 1680-7316 1680-7324 https://doaj.org/article/ea64a8001cb44a1fb1345d0fd96490d5 |
op_doi |
https://doi.org/10.5194/acp-23-8683-2023 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
23 |
container_issue |
15 |
container_start_page |
8683 |
op_container_end_page |
8703 |
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1776197970251743232 |