Decadal variations of blocking and storm tracks in centennial reanalyses
Extreme weather events in the mid-latitudes are often associated with weather systems, such as extratropical cyclones or blocks. However little is known about the decadal variation in the frequency of blocks and the activity of storm tracks and their relation to the two most important low-frequency...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/336642 2023-05-15T17:34:27+02:00 Decadal variations of blocking and storm tracks in centennial reanalyses Rohrer, Marco Brönnimann, Stefan Martius, Olivia Raible, Christoph C. Wild, Martin 2019 application/application/pdf https://hdl.handle.net/20.500.11850/336642 https://doi.org/10.3929/ethz-b-000336642 en eng International Meteorological Institute in Stockholm info:eu-repo/semantics/altIdentifier/doi/10.1080/16000870.2019.1586236 info:eu-repo/semantics/altIdentifier/wos/000462818600001 http://hdl.handle.net/20.500.11850/336642 doi:10.3929/ethz-b-000336642 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Attribution-NonCommercial 4.0 International CC-BY-NC Tellus A: Dynamic Meteorology and Oceanography, 71 (1) centennial reanalyses blocks cyclones AMO PDO circulation types decadal variability info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftethz https://doi.org/20.500.11850/336642 https://doi.org/10.3929/ethz-b-000336642 https://doi.org/10.1080/16000870.2019.1586236 2022-04-25T13:45:49Z Extreme weather events in the mid-latitudes are often associated with weather systems, such as extratropical cyclones or blocks. However little is known about the decadal variation in the frequency of blocks and the activity of storm tracks and their relation to the two most important low-frequency oceanic modes of variability, the Atlantic multidecadal oscillation (AMO) and the Pacific decadal oscillation (PDO). To address this question, first the representation of blocks, storm tracks and Alpine circulation types is assessed in recently released centennial reanalyses during the 20th century. While interannual variability is represented similarly in all centennial reanalyses, the trends in particular for storm track activity before 1950 differ substantially between the NOAA 20th century reanalyses (20CR and 20CRv2c) and ECMWF centennial reanalyses (ERA-20C and CERA-20C). Therefore, the analysis of the connection between the AMO and PDO and the mid-latitudinal circulation is restricted to the period 1950–2010. All centennial reanalyses agree on the anomaly patterns associated with the different AMO/PDO phases. We find no significant connections except a southward (northward) shift of the storm track over the North Pacific as well as the North Atlantic during the positive (negative) PDO phase. The ERA-20CM atmosphere-only model ensemble captures this relationship, indicating that the ocean forces the atmosphere in the North Pacific. For studies investigating periods earlier than 1950, we recommend using several reanalysis products to ensure the robustness of results. ISSN:0280-6495 ISSN:1600-0870 Article in Journal/Newspaper North Atlantic ETH Zürich Research Collection Pacific |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
centennial reanalyses blocks cyclones AMO PDO circulation types decadal variability |
spellingShingle |
centennial reanalyses blocks cyclones AMO PDO circulation types decadal variability Rohrer, Marco Brönnimann, Stefan Martius, Olivia Raible, Christoph C. Wild, Martin Decadal variations of blocking and storm tracks in centennial reanalyses |
topic_facet |
centennial reanalyses blocks cyclones AMO PDO circulation types decadal variability |
description |
Extreme weather events in the mid-latitudes are often associated with weather systems, such as extratropical cyclones or blocks. However little is known about the decadal variation in the frequency of blocks and the activity of storm tracks and their relation to the two most important low-frequency oceanic modes of variability, the Atlantic multidecadal oscillation (AMO) and the Pacific decadal oscillation (PDO). To address this question, first the representation of blocks, storm tracks and Alpine circulation types is assessed in recently released centennial reanalyses during the 20th century. While interannual variability is represented similarly in all centennial reanalyses, the trends in particular for storm track activity before 1950 differ substantially between the NOAA 20th century reanalyses (20CR and 20CRv2c) and ECMWF centennial reanalyses (ERA-20C and CERA-20C). Therefore, the analysis of the connection between the AMO and PDO and the mid-latitudinal circulation is restricted to the period 1950–2010. All centennial reanalyses agree on the anomaly patterns associated with the different AMO/PDO phases. We find no significant connections except a southward (northward) shift of the storm track over the North Pacific as well as the North Atlantic during the positive (negative) PDO phase. The ERA-20CM atmosphere-only model ensemble captures this relationship, indicating that the ocean forces the atmosphere in the North Pacific. For studies investigating periods earlier than 1950, we recommend using several reanalysis products to ensure the robustness of results. ISSN:0280-6495 ISSN:1600-0870 |
format |
Article in Journal/Newspaper |
author |
Rohrer, Marco Brönnimann, Stefan Martius, Olivia Raible, Christoph C. Wild, Martin |
author_facet |
Rohrer, Marco Brönnimann, Stefan Martius, Olivia Raible, Christoph C. Wild, Martin |
author_sort |
Rohrer, Marco |
title |
Decadal variations of blocking and storm tracks in centennial reanalyses |
title_short |
Decadal variations of blocking and storm tracks in centennial reanalyses |
title_full |
Decadal variations of blocking and storm tracks in centennial reanalyses |
title_fullStr |
Decadal variations of blocking and storm tracks in centennial reanalyses |
title_full_unstemmed |
Decadal variations of blocking and storm tracks in centennial reanalyses |
title_sort |
decadal variations of blocking and storm tracks in centennial reanalyses |
publisher |
International Meteorological Institute in Stockholm |
publishDate |
2019 |
url |
https://hdl.handle.net/20.500.11850/336642 https://doi.org/10.3929/ethz-b-000336642 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Tellus A: Dynamic Meteorology and Oceanography, 71 (1) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1080/16000870.2019.1586236 info:eu-repo/semantics/altIdentifier/wos/000462818600001 http://hdl.handle.net/20.500.11850/336642 doi:10.3929/ethz-b-000336642 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Attribution-NonCommercial 4.0 International |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/20.500.11850/336642 https://doi.org/10.3929/ethz-b-000336642 https://doi.org/10.1080/16000870.2019.1586236 |
_version_ |
1766133298869829632 |