Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps
The meridional temperature gradient between mid and high latitudes decreases by Arctic amplification. Following this decrease, the circulation in the mid latitudes may change and, therefore, the meridional flux of heat and moisture increases. This might increase the Arctic temperatures even further....
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ftdoajarticles:oai:doaj.org/article:34ea4112bf324f529a507a01f1f2fd6f 2023-05-15T14:53:41+02:00 Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps Daniel Mewes Christoph Jacobi 2020-03-01T00:00:00Z https://doi.org/10.3390/atmos11030251 https://doaj.org/article/34ea4112bf324f529a507a01f1f2fd6f EN eng MDPI AG https://www.mdpi.com/2073-4433/11/3/251 https://doaj.org/toc/2073-4433 2073-4433 doi:10.3390/atmos11030251 https://doaj.org/article/34ea4112bf324f529a507a01f1f2fd6f Atmosphere, Vol 11, Iss 3, p 251 (2020) self-organizing maps cmip5 horizontal heat flux Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.3390/atmos11030251 2022-12-31T03:41:56Z The meridional temperature gradient between mid and high latitudes decreases by Arctic amplification. Following this decrease, the circulation in the mid latitudes may change and, therefore, the meridional flux of heat and moisture increases. This might increase the Arctic temperatures even further. A proxy for the vertically integrated atmospheric horizontal energy flux was analyzed using the self-organizing-map (SOM) method. Climate Model Intercomparison Project Phase 5 (CMIP5) model data of the historical and Representative Concentration Pathway 8.5 (RCP8.5) experiments were analyzed to extract horizontal flux patterns. These patterns were analyzed for changes between and within the respective experiments. It was found that the general horizontal flux patterns are reproduced by all models and in all experiments in comparison with reanalyses. By comparing the reanalysis time frame with the respective historical experiments, we found that the general occurrence frequencies of the patterns differ substantially. The results show that the general structure of the flux patterns is not changed when comparing the historical and RCP8.5 results. However, the amplitudes of the fluxes are decreasing. It is suggested that the amplitudes are smaller in the RCP8.5 results compared to the historical results, following a greater meandering of the jet stream, which yields smaller flux amplitudes of the cluster mean. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Atmosphere 11 3 251 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
self-organizing maps cmip5 horizontal heat flux Meteorology. Climatology QC851-999 |
spellingShingle |
self-organizing maps cmip5 horizontal heat flux Meteorology. Climatology QC851-999 Daniel Mewes Christoph Jacobi Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps |
topic_facet |
self-organizing maps cmip5 horizontal heat flux Meteorology. Climatology QC851-999 |
description |
The meridional temperature gradient between mid and high latitudes decreases by Arctic amplification. Following this decrease, the circulation in the mid latitudes may change and, therefore, the meridional flux of heat and moisture increases. This might increase the Arctic temperatures even further. A proxy for the vertically integrated atmospheric horizontal energy flux was analyzed using the self-organizing-map (SOM) method. Climate Model Intercomparison Project Phase 5 (CMIP5) model data of the historical and Representative Concentration Pathway 8.5 (RCP8.5) experiments were analyzed to extract horizontal flux patterns. These patterns were analyzed for changes between and within the respective experiments. It was found that the general horizontal flux patterns are reproduced by all models and in all experiments in comparison with reanalyses. By comparing the reanalysis time frame with the respective historical experiments, we found that the general occurrence frequencies of the patterns differ substantially. The results show that the general structure of the flux patterns is not changed when comparing the historical and RCP8.5 results. However, the amplitudes of the fluxes are decreasing. It is suggested that the amplitudes are smaller in the RCP8.5 results compared to the historical results, following a greater meandering of the jet stream, which yields smaller flux amplitudes of the cluster mean. |
format |
Article in Journal/Newspaper |
author |
Daniel Mewes Christoph Jacobi |
author_facet |
Daniel Mewes Christoph Jacobi |
author_sort |
Daniel Mewes |
title |
Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps |
title_short |
Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps |
title_full |
Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps |
title_fullStr |
Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps |
title_full_unstemmed |
Horizontal Temperature Fluxes in the Arctic in CMIP5 Model Results Analyzed with Self-Organizing Maps |
title_sort |
horizontal temperature fluxes in the arctic in cmip5 model results analyzed with self-organizing maps |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/atmos11030251 https://doaj.org/article/34ea4112bf324f529a507a01f1f2fd6f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmosphere, Vol 11, Iss 3, p 251 (2020) |
op_relation |
https://www.mdpi.com/2073-4433/11/3/251 https://doaj.org/toc/2073-4433 2073-4433 doi:10.3390/atmos11030251 https://doaj.org/article/34ea4112bf324f529a507a01f1f2fd6f |
op_doi |
https://doi.org/10.3390/atmos11030251 |
container_title |
Atmosphere |
container_volume |
11 |
container_issue |
3 |
container_start_page |
251 |
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1766325270416982016 |