Recent upper Arctic Ocean warming expedited by summertime atmospheric processes
Presented at the GHRSST XXIII international science team meeting, 27 June-1 July 2022, online and in-person (Barcelona). #GHRSST23 Short abstract The observed upper (0–50 m) Arctic Ocean warming since 1979 has been primarily attributed to anthropogenically driven changes in the high latitudes. Here,...
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ftzenodo:oai:zenodo.org:7120430 2023-05-15T13:11:00+02:00 Recent upper Arctic Ocean warming expedited by summertime atmospheric processes Steele, Michael 2022-07-01 https://zenodo.org/record/7120430 https://doi.org/10.5281/zenodo.7120430 unknown doi:10.5281/zenodo.7120429 https://zenodo.org/communities/ghrsst https://zenodo.org/record/7120430 https://doi.org/10.5281/zenodo.7120430 oai:zenodo.org:7120430 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/lecture presentation 2022 ftzenodo https://doi.org/10.5281/zenodo.712043010.5281/zenodo.7120429 2023-03-10T23:43:19Z Presented at the GHRSST XXIII international science team meeting, 27 June-1 July 2022, online and in-person (Barcelona). #GHRSST23 Short abstract The observed upper (0–50 m) Arctic Ocean warming since 1979 has been primarily attributed to anthropogenically driven changes in the high latitudes. Here, using both observational and modeling analyses, we demonstrate that a multiyear trend in the summertime large-scale atmospheric circulation, which we ascribe to internal variability, has played an important role in upper ocean warming in summer and fall over the past four decades due to sea ice-albedo effect induced by atmospheric dynamics. Nudging experiments in which the wind fields are constrained toward the observed state support this mechanism and suggest that the internal variability contribution to recent upper Arctic Ocean warming accounts for up to one quarter of warming over the past four decades and up to 60% of warming from 2000 to 2018. This suggests that climate models need to replicate this important internal process in order to realistically simulate Arctic Ocean temperature variability and trends. Conference Object albedo Arctic Arctic Ocean Sea ice Zenodo Arctic Arctic Ocean |
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Presented at the GHRSST XXIII international science team meeting, 27 June-1 July 2022, online and in-person (Barcelona). #GHRSST23 Short abstract The observed upper (0–50 m) Arctic Ocean warming since 1979 has been primarily attributed to anthropogenically driven changes in the high latitudes. Here, using both observational and modeling analyses, we demonstrate that a multiyear trend in the summertime large-scale atmospheric circulation, which we ascribe to internal variability, has played an important role in upper ocean warming in summer and fall over the past four decades due to sea ice-albedo effect induced by atmospheric dynamics. Nudging experiments in which the wind fields are constrained toward the observed state support this mechanism and suggest that the internal variability contribution to recent upper Arctic Ocean warming accounts for up to one quarter of warming over the past four decades and up to 60% of warming from 2000 to 2018. This suggests that climate models need to replicate this important internal process in order to realistically simulate Arctic Ocean temperature variability and trends. |
format |
Conference Object |
author |
Steele, Michael |
spellingShingle |
Steele, Michael Recent upper Arctic Ocean warming expedited by summertime atmospheric processes |
author_facet |
Steele, Michael |
author_sort |
Steele, Michael |
title |
Recent upper Arctic Ocean warming expedited by summertime atmospheric processes |
title_short |
Recent upper Arctic Ocean warming expedited by summertime atmospheric processes |
title_full |
Recent upper Arctic Ocean warming expedited by summertime atmospheric processes |
title_fullStr |
Recent upper Arctic Ocean warming expedited by summertime atmospheric processes |
title_full_unstemmed |
Recent upper Arctic Ocean warming expedited by summertime atmospheric processes |
title_sort |
recent upper arctic ocean warming expedited by summertime atmospheric processes |
publishDate |
2022 |
url |
https://zenodo.org/record/7120430 https://doi.org/10.5281/zenodo.7120430 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
albedo Arctic Arctic Ocean Sea ice |
genre_facet |
albedo Arctic Arctic Ocean Sea ice |
op_relation |
doi:10.5281/zenodo.7120429 https://zenodo.org/communities/ghrsst https://zenodo.org/record/7120430 https://doi.org/10.5281/zenodo.7120430 oai:zenodo.org:7120430 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.712043010.5281/zenodo.7120429 |
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1766245551121104896 |