Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM
Abstract This work presents snapshot simulations of the late 20th and late 21st century Antarctic climate under the RCP8.5 scenario carried out with an empirically bias‐corrected global atmospheric general circulation model (AGCM), forced with bias‐corrected sea‐surface temperatures and sea ice and...
Published in: | Journal of Advances in Modeling Earth Systems |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union (AGU)
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2018MS001438 https://doaj.org/article/ed768c867579421d99503d9d3289c786 |
id |
ftdoajarticles:oai:doaj.org/article:ed768c867579421d99503d9d3289c786 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ed768c867579421d99503d9d3289c786 2023-05-15T14:00:12+02:00 Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM Gerhard Krinner Julien Beaumet Vincent Favier Michel Déqué Claire Brutel‐Vuilmet 2019-01-01T00:00:00Z https://doi.org/10.1029/2018MS001438 https://doaj.org/article/ed768c867579421d99503d9d3289c786 EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2018MS001438 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2018MS001438 https://doaj.org/article/ed768c867579421d99503d9d3289c786 Journal of Advances in Modeling Earth Systems, Vol 11, Iss 1, Pp 64-82 (2019) bias correction climate modeling regional climate Physical geography GB3-5030 Oceanography GC1-1581 article 2019 ftdoajarticles https://doi.org/10.1029/2018MS001438 2022-12-31T05:18:54Z Abstract This work presents snapshot simulations of the late 20th and late 21st century Antarctic climate under the RCP8.5 scenario carried out with an empirically bias‐corrected global atmospheric general circulation model (AGCM), forced with bias‐corrected sea‐surface temperatures and sea ice and run with about 100‐km resolution over Antarctica. The bias correction substantially improves the simulated mean late 20th century climate. The simulated atmospheric circulation of the bias‐corrected model compares very favorably to the best available AMIP (Atmospheric Model Intercomparison Project)‐type climate models. The simulated interannual circulation variability is improved by the bias correction. Depending on the metric, a slight improvement or degradation is found in the simulated variability on synoptic timescales. The simulated climate change over the 21st century is broadly similar in the corrected and uncorrected versions of the atmospheric model, and atmospheric circulation patterns are not geographically “pinned” by the applied bias correction. These results suggest that the method presented here can be used for bias‐corrected climate projections. Finally, the authors discuss different possible choices in terms of the place of bias corrections and other intermediate steps in the modeling chain leading from global coupled climate simulations to impact assessment. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic Journal of Advances in Modeling Earth Systems 11 1 64 82 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
bias correction climate modeling regional climate Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
bias correction climate modeling regional climate Physical geography GB3-5030 Oceanography GC1-1581 Gerhard Krinner Julien Beaumet Vincent Favier Michel Déqué Claire Brutel‐Vuilmet Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM |
topic_facet |
bias correction climate modeling regional climate Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract This work presents snapshot simulations of the late 20th and late 21st century Antarctic climate under the RCP8.5 scenario carried out with an empirically bias‐corrected global atmospheric general circulation model (AGCM), forced with bias‐corrected sea‐surface temperatures and sea ice and run with about 100‐km resolution over Antarctica. The bias correction substantially improves the simulated mean late 20th century climate. The simulated atmospheric circulation of the bias‐corrected model compares very favorably to the best available AMIP (Atmospheric Model Intercomparison Project)‐type climate models. The simulated interannual circulation variability is improved by the bias correction. Depending on the metric, a slight improvement or degradation is found in the simulated variability on synoptic timescales. The simulated climate change over the 21st century is broadly similar in the corrected and uncorrected versions of the atmospheric model, and atmospheric circulation patterns are not geographically “pinned” by the applied bias correction. These results suggest that the method presented here can be used for bias‐corrected climate projections. Finally, the authors discuss different possible choices in terms of the place of bias corrections and other intermediate steps in the modeling chain leading from global coupled climate simulations to impact assessment. |
format |
Article in Journal/Newspaper |
author |
Gerhard Krinner Julien Beaumet Vincent Favier Michel Déqué Claire Brutel‐Vuilmet |
author_facet |
Gerhard Krinner Julien Beaumet Vincent Favier Michel Déqué Claire Brutel‐Vuilmet |
author_sort |
Gerhard Krinner |
title |
Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM |
title_short |
Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM |
title_full |
Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM |
title_fullStr |
Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM |
title_full_unstemmed |
Empirical Run‐Time Bias Correction for Antarctic Regional Climate Projections With a Stretched‐Grid AGCM |
title_sort |
empirical run‐time bias correction for antarctic regional climate projections with a stretched‐grid agcm |
publisher |
American Geophysical Union (AGU) |
publishDate |
2019 |
url |
https://doi.org/10.1029/2018MS001438 https://doaj.org/article/ed768c867579421d99503d9d3289c786 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 11, Iss 1, Pp 64-82 (2019) |
op_relation |
https://doi.org/10.1029/2018MS001438 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2018MS001438 https://doaj.org/article/ed768c867579421d99503d9d3289c786 |
op_doi |
https://doi.org/10.1029/2018MS001438 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
11 |
container_issue |
1 |
container_start_page |
64 |
op_container_end_page |
82 |
_version_ |
1766269212337111040 |