Constraints on simulated past Arctic amplification and lapse rate feedback from observations
The Arctic has warmed more rapidly than the global mean during the past few decades. The lapse rate feedback (LRF) has been identified as being a large contributor to the Arctic amplification (AA) of climate change. This particular feedback arises from the vertically non-uniform warming of the tropo...
Published in: | Atmospheric Chemistry and Physics |
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Format: | Article in Journal/Newspaper |
Language: | English |
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European Geosciences Union (EGU)
2023
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Online Access: | https://pure.iiasa.ac.at/id/eprint/19125/ https://pure.iiasa.ac.at/id/eprint/19125/1/acp-23-9963-2023.pdf https://doi.org/10.5194/acp-23-9963-2023 |
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ftiiasalaxenburg:oai:pure.iiasa.ac.at:19125 2023-11-12T04:10:02+01:00 Constraints on simulated past Arctic amplification and lapse rate feedback from observations Linke, O. Quaas, J. Baumer, F. Becker, S. Chylik, J. Dahlke, S. Ehrlich, A. Handorf, D. Jacobi, C. Kalesse-Los, H. Lelli, L. Mehrdad, S. Neggers, R. Riebold, J. Saavedra Garfias, P. Schnierstein, N. Shupe, M. Smith, C. Spreen, G. Verneuil, B. Vinjamuri, K. Vountas, M. Wendisch, M. 2023-09-07 text https://pure.iiasa.ac.at/id/eprint/19125/ https://pure.iiasa.ac.at/id/eprint/19125/1/acp-23-9963-2023.pdf https://doi.org/10.5194/acp-23-9963-2023 en eng European Geosciences Union (EGU) https://pure.iiasa.ac.at/id/eprint/19125/1/acp-23-9963-2023.pdf Linke, O., Quaas, J., Baumer, F., Becker, S., Chylik, J., Dahlke, S., Ehrlich, A., Handorf, D., et al. (2023). Constraints on simulated past Arctic amplification and lapse rate feedback from observations. Atmospheric Chemistry and Physics 23 (17) 9963-9992. 10.5194/acp-23-9963-2023 <https://doi.org/10.5194/acp-23-9963-2023>. doi:10.5194/acp-23-9963-2023 cc_by_4 Article PeerReviewed 2023 ftiiasalaxenburg https://doi.org/10.5194/acp-23-9963-2023 2023-10-15T23:34:24Z The Arctic has warmed more rapidly than the global mean during the past few decades. The lapse rate feedback (LRF) has been identified as being a large contributor to the Arctic amplification (AA) of climate change. This particular feedback arises from the vertically non-uniform warming of the troposphere, which in the Arctic emerges as strong near-surface and muted free-tropospheric warming. Stable stratification and meridional energy transport are two characteristic processes that are evoked as causes for this vertical warming structure. Our aim is to constrain these governing processes by making use of detailed observations in combination with the large climate model ensemble of the sixth Coupled Model Intercomparison Project (CMIP6). We build on the result that CMIP6 models show a large spread in AA and Arctic LRF, which are positively correlated for the historical period of 1951–2014. Thus, we present process-oriented constraints by linking characteristics of the current climate to historical climate simulations. In particular, we compare a large consortium of present-day observations to co-located model data from subsets that show a weak and strong simulated AA and Arctic LRF in the past. Our analyses suggest that the vertical temperature structure of the Arctic boundary layer is more realistically depicted in climate models with weak (w) AA and Arctic LRF (CMIP6/w) in the past. In particular, CMIP6/w models show stronger inversions in the present climate for boreal autumn and winter and over sea ice, which is more consistent with the observations. These results are based on observations from the year-long Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition in the central Arctic, long-term measurements at the Utqiaġvik site in Alaska, USA, and dropsonde temperature profiling from aircraft campaigns in the Fram Strait. In addition, the atmospheric energy transport from lower latitudes that can further mediate the warming structure in the free troposphere is more ... Article in Journal/Newspaper Arctic Arctic Climate change Fram Strait Sea ice Alaska IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository) Arctic Atmospheric Chemistry and Physics 23 17 9963 9992 |
institution |
Open Polar |
collection |
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository) |
op_collection_id |
ftiiasalaxenburg |
language |
English |
description |
The Arctic has warmed more rapidly than the global mean during the past few decades. The lapse rate feedback (LRF) has been identified as being a large contributor to the Arctic amplification (AA) of climate change. This particular feedback arises from the vertically non-uniform warming of the troposphere, which in the Arctic emerges as strong near-surface and muted free-tropospheric warming. Stable stratification and meridional energy transport are two characteristic processes that are evoked as causes for this vertical warming structure. Our aim is to constrain these governing processes by making use of detailed observations in combination with the large climate model ensemble of the sixth Coupled Model Intercomparison Project (CMIP6). We build on the result that CMIP6 models show a large spread in AA and Arctic LRF, which are positively correlated for the historical period of 1951–2014. Thus, we present process-oriented constraints by linking characteristics of the current climate to historical climate simulations. In particular, we compare a large consortium of present-day observations to co-located model data from subsets that show a weak and strong simulated AA and Arctic LRF in the past. Our analyses suggest that the vertical temperature structure of the Arctic boundary layer is more realistically depicted in climate models with weak (w) AA and Arctic LRF (CMIP6/w) in the past. In particular, CMIP6/w models show stronger inversions in the present climate for boreal autumn and winter and over sea ice, which is more consistent with the observations. These results are based on observations from the year-long Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition in the central Arctic, long-term measurements at the Utqiaġvik site in Alaska, USA, and dropsonde temperature profiling from aircraft campaigns in the Fram Strait. In addition, the atmospheric energy transport from lower latitudes that can further mediate the warming structure in the free troposphere is more ... |
format |
Article in Journal/Newspaper |
author |
Linke, O. Quaas, J. Baumer, F. Becker, S. Chylik, J. Dahlke, S. Ehrlich, A. Handorf, D. Jacobi, C. Kalesse-Los, H. Lelli, L. Mehrdad, S. Neggers, R. Riebold, J. Saavedra Garfias, P. Schnierstein, N. Shupe, M. Smith, C. Spreen, G. Verneuil, B. Vinjamuri, K. Vountas, M. Wendisch, M. |
spellingShingle |
Linke, O. Quaas, J. Baumer, F. Becker, S. Chylik, J. Dahlke, S. Ehrlich, A. Handorf, D. Jacobi, C. Kalesse-Los, H. Lelli, L. Mehrdad, S. Neggers, R. Riebold, J. Saavedra Garfias, P. Schnierstein, N. Shupe, M. Smith, C. Spreen, G. Verneuil, B. Vinjamuri, K. Vountas, M. Wendisch, M. Constraints on simulated past Arctic amplification and lapse rate feedback from observations |
author_facet |
Linke, O. Quaas, J. Baumer, F. Becker, S. Chylik, J. Dahlke, S. Ehrlich, A. Handorf, D. Jacobi, C. Kalesse-Los, H. Lelli, L. Mehrdad, S. Neggers, R. Riebold, J. Saavedra Garfias, P. Schnierstein, N. Shupe, M. Smith, C. Spreen, G. Verneuil, B. Vinjamuri, K. Vountas, M. Wendisch, M. |
author_sort |
Linke, O. |
title |
Constraints on simulated past Arctic amplification and lapse rate feedback from observations |
title_short |
Constraints on simulated past Arctic amplification and lapse rate feedback from observations |
title_full |
Constraints on simulated past Arctic amplification and lapse rate feedback from observations |
title_fullStr |
Constraints on simulated past Arctic amplification and lapse rate feedback from observations |
title_full_unstemmed |
Constraints on simulated past Arctic amplification and lapse rate feedback from observations |
title_sort |
constraints on simulated past arctic amplification and lapse rate feedback from observations |
publisher |
European Geosciences Union (EGU) |
publishDate |
2023 |
url |
https://pure.iiasa.ac.at/id/eprint/19125/ https://pure.iiasa.ac.at/id/eprint/19125/1/acp-23-9963-2023.pdf https://doi.org/10.5194/acp-23-9963-2023 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Climate change Fram Strait Sea ice Alaska |
genre_facet |
Arctic Arctic Climate change Fram Strait Sea ice Alaska |
op_relation |
https://pure.iiasa.ac.at/id/eprint/19125/1/acp-23-9963-2023.pdf Linke, O., Quaas, J., Baumer, F., Becker, S., Chylik, J., Dahlke, S., Ehrlich, A., Handorf, D., et al. (2023). Constraints on simulated past Arctic amplification and lapse rate feedback from observations. Atmospheric Chemistry and Physics 23 (17) 9963-9992. 10.5194/acp-23-9963-2023 <https://doi.org/10.5194/acp-23-9963-2023>. doi:10.5194/acp-23-9963-2023 |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.5194/acp-23-9963-2023 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
23 |
container_issue |
17 |
container_start_page |
9963 |
op_container_end_page |
9992 |
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1782329704348385280 |