Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016
Assumptions of linear lapse rates in regions prone to surface-based inversions (SBIs) can generate biases in the prediction of surface air temperature. Although studies of Arctic inversions are common, few regional studies of their characteristics exist in high-latitude regions with mountainous topo...
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Language: | English |
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Canadian Science Publishing
2023
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Online Access: | http://dx.doi.org/10.1139/as-2022-0031 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2022-0031 https://cdnsciencepub.com/doi/pdf/10.1139/as-2022-0031 |
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crcansciencepubl:10.1139/as-2022-0031 2024-09-30T14:27:25+00:00 Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016 Noad, Nick C. Bonnaventure, Philip P. Gilson, Gaëlle F. Jiskoot, Hester Garibaldi, Madeleine C. 2023 http://dx.doi.org/10.1139/as-2022-0031 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2022-0031 https://cdnsciencepub.com/doi/pdf/10.1139/as-2022-0031 en eng Canadian Science Publishing https://creativecommons.org/licenses/by/4.0/deed.en_GB Arctic Science ISSN 2368-7460 journal-article 2023 crcansciencepubl https://doi.org/10.1139/as-2022-0031 2024-09-12T04:13:22Z Assumptions of linear lapse rates in regions prone to surface-based inversions (SBIs) can generate biases in the prediction of surface air temperature. Although studies of Arctic inversions are common, few regional studies of their characteristics exist in high-latitude regions with mountainous topography. To address this gap, vertical atmospheric temperature profiles for five sites in northwestern Canada were analysed using archived radiosonde data from 1990 to 2016. We present monthly, seasonal, and annual SBI characteristics including the occurrence of transient and persistent SBIs. A novel metric, surface-based inversion impact (SBI imp ), was developed by combining the traditional inversion characteristics of depth, strength, and frequency, and was used to quantify the impact of SBIs on cooling the surface air temperature. SBI imp values of >5 °C yr −1 and ∼10 °C winter −1 occur locally. A weak linear relationship between sea ice coverage in the Beaufort Sea and SBI imp manifests across parts of the study area, though this relationship does not persist after detrending the datasets. Topographic analysis of areas surrounding each radiosonde location reveals highly variable SBI imp in complex mountain areas and more consistent SBI imp across areas of low relief. Our results can help interpret the role of inversions in climatic conditions maintaining cryospheric elements such as permafrost. Article in Journal/Newspaper Arctic Arctic Beaufort Sea Ice permafrost Sea ice Canadian Science Publishing Arctic Canada Arctic Science |
institution |
Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Assumptions of linear lapse rates in regions prone to surface-based inversions (SBIs) can generate biases in the prediction of surface air temperature. Although studies of Arctic inversions are common, few regional studies of their characteristics exist in high-latitude regions with mountainous topography. To address this gap, vertical atmospheric temperature profiles for five sites in northwestern Canada were analysed using archived radiosonde data from 1990 to 2016. We present monthly, seasonal, and annual SBI characteristics including the occurrence of transient and persistent SBIs. A novel metric, surface-based inversion impact (SBI imp ), was developed by combining the traditional inversion characteristics of depth, strength, and frequency, and was used to quantify the impact of SBIs on cooling the surface air temperature. SBI imp values of >5 °C yr −1 and ∼10 °C winter −1 occur locally. A weak linear relationship between sea ice coverage in the Beaufort Sea and SBI imp manifests across parts of the study area, though this relationship does not persist after detrending the datasets. Topographic analysis of areas surrounding each radiosonde location reveals highly variable SBI imp in complex mountain areas and more consistent SBI imp across areas of low relief. Our results can help interpret the role of inversions in climatic conditions maintaining cryospheric elements such as permafrost. |
format |
Article in Journal/Newspaper |
author |
Noad, Nick C. Bonnaventure, Philip P. Gilson, Gaëlle F. Jiskoot, Hester Garibaldi, Madeleine C. |
spellingShingle |
Noad, Nick C. Bonnaventure, Philip P. Gilson, Gaëlle F. Jiskoot, Hester Garibaldi, Madeleine C. Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016 |
author_facet |
Noad, Nick C. Bonnaventure, Philip P. Gilson, Gaëlle F. Jiskoot, Hester Garibaldi, Madeleine C. |
author_sort |
Noad, Nick C. |
title |
Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016 |
title_short |
Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016 |
title_full |
Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016 |
title_fullStr |
Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016 |
title_full_unstemmed |
Surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern Canada from radiosonde data between 1990 and 2016 |
title_sort |
surface-based temperature inversion characteristics and impact on surface air temperatures in northwestern canada from radiosonde data between 1990 and 2016 |
publisher |
Canadian Science Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1139/as-2022-0031 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2022-0031 https://cdnsciencepub.com/doi/pdf/10.1139/as-2022-0031 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Arctic Beaufort Sea Ice permafrost Sea ice |
genre_facet |
Arctic Arctic Beaufort Sea Ice permafrost Sea ice |
op_source |
Arctic Science ISSN 2368-7460 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.en_GB |
op_doi |
https://doi.org/10.1139/as-2022-0031 |
container_title |
Arctic Science |
_version_ |
1811633496399020032 |