Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5
The planetary boundary layer height (PBLH) is a diagnostic field related to the effective heat capacity of the lower atmosphere, both stable and convective, and it constrains motion in this layer as well as impacts surface warming. Here, we used radiosonde data from five icebreaker cruises to the Ch...
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University of Toronto
2021
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Online Access: | http://hdl.handle.net/1807/108117 https://doi.org/10.3390/atmos12111398 |
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ftunivtoronto:oai:tspace.library.utoronto.ca:1807/108117 2023-05-15T15:04:37+02:00 Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5 Gu, Mingyi Moore, G. W. K. Wood, Kevin Wang, Zhaomin 2021-10-25 application/pdf http://hdl.handle.net/1807/108117 https://doi.org/10.3390/atmos12111398 unknown University of Toronto Atmosphere 12 (11): 1398 (2021) http://hdl.handle.net/1807/108117 doi:10.3390/atmos12111398 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY Article 2021 ftunivtoronto https://doi.org/10.3390/atmos12111398 2021-11-14T18:17:07Z The planetary boundary layer height (PBLH) is a diagnostic field related to the effective heat capacity of the lower atmosphere, both stable and convective, and it constrains motion in this layer as well as impacts surface warming. Here, we used radiosonde data from five icebreaker cruises to the Chukchi and Beaufort Seas during both spring and fall to derive PBLH using the bulk Ri method, which were then compared with results from ERA5 reanalysis. The ERA5 PBLH was similar to but slightly lower than the ship observations. Clear and consistent seasonal changes were found in both the observations and the reanalysis: PBLH decreased from mid-May to mid-June and subsequently increased after August. The comparison with ERA5 shows that, besides surface temperature, biases in PBLH are also a function of wind direction, suggesting that the availability of upwind observations is also important in representing processes active in the boundary layer over the Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Ocean Beaufort Sea Chukchi Icebreaker University of Toronto: Research Repository T-Space Arctic Arctic Ocean Atmosphere 12 11 1398 |
institution |
Open Polar |
collection |
University of Toronto: Research Repository T-Space |
op_collection_id |
ftunivtoronto |
language |
unknown |
description |
The planetary boundary layer height (PBLH) is a diagnostic field related to the effective heat capacity of the lower atmosphere, both stable and convective, and it constrains motion in this layer as well as impacts surface warming. Here, we used radiosonde data from five icebreaker cruises to the Chukchi and Beaufort Seas during both spring and fall to derive PBLH using the bulk Ri method, which were then compared with results from ERA5 reanalysis. The ERA5 PBLH was similar to but slightly lower than the ship observations. Clear and consistent seasonal changes were found in both the observations and the reanalysis: PBLH decreased from mid-May to mid-June and subsequently increased after August. The comparison with ERA5 shows that, besides surface temperature, biases in PBLH are also a function of wind direction, suggesting that the availability of upwind observations is also important in representing processes active in the boundary layer over the Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Gu, Mingyi Moore, G. W. K. Wood, Kevin Wang, Zhaomin |
spellingShingle |
Gu, Mingyi Moore, G. W. K. Wood, Kevin Wang, Zhaomin Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5 |
author_facet |
Gu, Mingyi Moore, G. W. K. Wood, Kevin Wang, Zhaomin |
author_sort |
Gu, Mingyi |
title |
Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5 |
title_short |
Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5 |
title_full |
Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5 |
title_fullStr |
Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5 |
title_full_unstemmed |
Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5 |
title_sort |
planetary boundary layer heights from cruises in spring to autumn chukchi-beaufort sea compared with era5 |
publisher |
University of Toronto |
publishDate |
2021 |
url |
http://hdl.handle.net/1807/108117 https://doi.org/10.3390/atmos12111398 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Beaufort Sea Chukchi Icebreaker |
genre_facet |
Arctic Arctic Ocean Beaufort Sea Chukchi Icebreaker |
op_relation |
Atmosphere 12 (11): 1398 (2021) http://hdl.handle.net/1807/108117 doi:10.3390/atmos12111398 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/atmos12111398 |
container_title |
Atmosphere |
container_volume |
12 |
container_issue |
11 |
container_start_page |
1398 |
_version_ |
1766336356964892672 |