Application of coupled data assimilation at ECMWF
Historical reanalyses combine observations of past weather with simulations from modern numerical weather prediction models to provide a consistent, global history of the weather. CERA-20C is the first coupled reanalysis over the 20 th century produced by ECMWF. Atmospheric and ocean observations ar...
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ftdatacite:10.5281/zenodo.3241955 2023-05-15T17:29:30+02:00 Application of coupled data assimilation at ECMWF Laloyaux, Patrick 2019 https://dx.doi.org/10.5281/zenodo.3241955 https://zenodo.org/record/3241955 unknown Zenodo https://zenodo.org/communities/blue-actionh2020 https://dx.doi.org/10.5281/zenodo.3241954 https://zenodo.org/communities/blue-actionh2020 Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY Text Presentation article-journal ScholarlyArticle 2019 ftdatacite https://doi.org/10.5281/zenodo.3241955 https://doi.org/10.5281/zenodo.3241954 2021-11-05T12:55:41Z Historical reanalyses combine observations of past weather with simulations from modern numerical weather prediction models to provide a consistent, global history of the weather. CERA-20C is the first coupled reanalysis over the 20 th century produced by ECMWF. Atmospheric and ocean observations are assimilated simultaneously, thereby providing more balanced estimates of the atmosphere-ocean system and allowing for a broader range of studies of the entire Earth system. The question of whether the North Atlantic Oscillation (NAO) and associated climate anomalies over the North Atlantic-European area during winter can be predicted with any confidence is still a matter of on-going scientific debate. Long retrospective seasonal forecast experiments for all boreal winter seasons during the period 1901 to 2009 have been produced using CERA-20C for the initialisation of the coupled model. There is significant skill for early and most recent decades while there is a lack of skill mid-century. This shows that short hindcast periods are not sufficiently representative for longer-term behaviour due to decadal climate variability. Conference Object North Atlantic North Atlantic oscillation DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Historical reanalyses combine observations of past weather with simulations from modern numerical weather prediction models to provide a consistent, global history of the weather. CERA-20C is the first coupled reanalysis over the 20 th century produced by ECMWF. Atmospheric and ocean observations are assimilated simultaneously, thereby providing more balanced estimates of the atmosphere-ocean system and allowing for a broader range of studies of the entire Earth system. The question of whether the North Atlantic Oscillation (NAO) and associated climate anomalies over the North Atlantic-European area during winter can be predicted with any confidence is still a matter of on-going scientific debate. Long retrospective seasonal forecast experiments for all boreal winter seasons during the period 1901 to 2009 have been produced using CERA-20C for the initialisation of the coupled model. There is significant skill for early and most recent decades while there is a lack of skill mid-century. This shows that short hindcast periods are not sufficiently representative for longer-term behaviour due to decadal climate variability. |
format |
Conference Object |
author |
Laloyaux, Patrick |
spellingShingle |
Laloyaux, Patrick Application of coupled data assimilation at ECMWF |
author_facet |
Laloyaux, Patrick |
author_sort |
Laloyaux, Patrick |
title |
Application of coupled data assimilation at ECMWF |
title_short |
Application of coupled data assimilation at ECMWF |
title_full |
Application of coupled data assimilation at ECMWF |
title_fullStr |
Application of coupled data assimilation at ECMWF |
title_full_unstemmed |
Application of coupled data assimilation at ECMWF |
title_sort |
application of coupled data assimilation at ecmwf |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://dx.doi.org/10.5281/zenodo.3241955 https://zenodo.org/record/3241955 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://zenodo.org/communities/blue-actionh2020 https://dx.doi.org/10.5281/zenodo.3241954 https://zenodo.org/communities/blue-actionh2020 |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.3241955 https://doi.org/10.5281/zenodo.3241954 |
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1766123646788567040 |