Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada
Permafrost distribution in high-latitude continental mountains is a product of both latitudinal and elevationally controlled attributes. Frequently occurring surface-based temperature inversions (SBIs) significantly modify surface lapse rates (SLRs) annually. We aim to identify and quantify patterns...
Published in: | Arctic Science |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/as-2021-0048 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2021-0048 https://cdnsciencepub.com/doi/pdf/10.1139/as-2021-0048 |
id |
crcansciencepubl:10.1139/as-2021-0048 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/as-2021-0048 2024-10-06T13:44:34+00:00 Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada Noad, Nick C. Bonnaventure, Philip P. 2022 http://dx.doi.org/10.1139/as-2021-0048 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2021-0048 https://cdnsciencepub.com/doi/pdf/10.1139/as-2021-0048 en eng Canadian Science Publishing https://creativecommons.org/licenses/by/4.0/deed.en_GB Arctic Science ISSN 2368-7460 journal-article 2022 crcansciencepubl https://doi.org/10.1139/as-2021-0048 2024-09-12T04:13:27Z Permafrost distribution in high-latitude continental mountains is a product of both latitudinal and elevationally controlled attributes. Frequently occurring surface-based temperature inversions (SBIs) significantly modify surface lapse rates (SLRs) annually. We aim to identify and quantify patterns of SBI characteristics in two proximal yet morphologically and vegetatively dissimilar central Yukon valleys. Elevational transect analysis is applied by using sensors in valley bottoms and 100 m upslope to determine in situ SLRs for the study period (August 2017 – August 2021). SLRs were shown to vary significantly between these dissimilar valleys. Climate reanalysis products (ClimateNA and Globsim) underestimated or almost entirely missed the presence of strong SBIs which produce annual average SLRs that range from 0.46 to 1.2 °C 100 m −1 . The magnitude of these hyper-inversions was grossly underpredicted by previous surface air temperature modelling that attempted to account for SBIs across Yukon. Our results support the previously conceptualized framework that strong SBIs influence surface air temperatures and the pattern of permafrost distribution. Article in Journal/Newspaper Arctic permafrost Yukon Canadian Science Publishing Canada Yukon Arctic Science |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Permafrost distribution in high-latitude continental mountains is a product of both latitudinal and elevationally controlled attributes. Frequently occurring surface-based temperature inversions (SBIs) significantly modify surface lapse rates (SLRs) annually. We aim to identify and quantify patterns of SBI characteristics in two proximal yet morphologically and vegetatively dissimilar central Yukon valleys. Elevational transect analysis is applied by using sensors in valley bottoms and 100 m upslope to determine in situ SLRs for the study period (August 2017 – August 2021). SLRs were shown to vary significantly between these dissimilar valleys. Climate reanalysis products (ClimateNA and Globsim) underestimated or almost entirely missed the presence of strong SBIs which produce annual average SLRs that range from 0.46 to 1.2 °C 100 m −1 . The magnitude of these hyper-inversions was grossly underpredicted by previous surface air temperature modelling that attempted to account for SBIs across Yukon. Our results support the previously conceptualized framework that strong SBIs influence surface air temperatures and the pattern of permafrost distribution. |
format |
Article in Journal/Newspaper |
author |
Noad, Nick C. Bonnaventure, Philip P. |
spellingShingle |
Noad, Nick C. Bonnaventure, Philip P. Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada |
author_facet |
Noad, Nick C. Bonnaventure, Philip P. |
author_sort |
Noad, Nick C. |
title |
Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada |
title_short |
Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada |
title_full |
Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada |
title_fullStr |
Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada |
title_full_unstemmed |
Surface temperature inversion characteristics in dissimilar valleys, Yukon Canada |
title_sort |
surface temperature inversion characteristics in dissimilar valleys, yukon canada |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/as-2021-0048 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2021-0048 https://cdnsciencepub.com/doi/pdf/10.1139/as-2021-0048 |
geographic |
Canada Yukon |
geographic_facet |
Canada Yukon |
genre |
Arctic permafrost Yukon |
genre_facet |
Arctic permafrost Yukon |
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-2021-0048 |
container_title |
Arctic Science |
_version_ |
1812183005343514624 |