Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations
Strong winds may be biased in atmospheric models. Here the ECMWF coupled wave-atmosphere model is used (1) to evaluate strong winds against observations, (2) to test how alternative wind stress parameterizations could lead to a more accurate model. For the period of storms Kaat and Lilli (23 to 27 J...
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ftarchimer:oai:archimer.ifremer.fr:52118 2023-05-15T17:31:20+02:00 Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations Pineau-guillou, Lucia Ardhuin, Fabrice Bouin, Marie-noelle Redelsperger, Jean-luc Chapron, Bertrand Bidlot, Jean-raymond Quilfen, Yves 2018-01 application/pdf https://archimer.ifremer.fr/doc/00410/52118/52826.pdf https://doi.org/10.1002/qj.3205 https://archimer.ifremer.fr/doc/00410/52118/ eng eng Wiley https://archimer.ifremer.fr/doc/00410/52118/52826.pdf doi:10.1002/qj.3205 https://archimer.ifremer.fr/doc/00410/52118/ 2017 Royal Meteorological Society info:eu-repo/semantics/openAccess restricted use Quarterly Journal Of The Royal Meteorological Society (0035-9009) (Wiley), 2018-01 , Vol. 144 , N. 711 Part.B , P. 317-332 air-sea exchanges northeast Atlantic winds IFS sea state roughness length drag coefficient wind stress text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1002/qj.3205 2021-09-23T20:30:05Z Strong winds may be biased in atmospheric models. Here the ECMWF coupled wave-atmosphere model is used (1) to evaluate strong winds against observations, (2) to test how alternative wind stress parameterizations could lead to a more accurate model. For the period of storms Kaat and Lilli (23 to 27 January 2014), we compared simulated winds with in-situ – moored buoys and platforms - and satellite observations available from the North Atlantic. Five wind stress parameterizations were evaluated. The first result is that moderate simulated winds (5-20 m s-1) match with all observations. However, for strong winds (above 20 m s-1), mean differences appear, as much as -7 m s-1 at 30 m s-1. Significant differences also exist between observations, with buoys and ASCAT-KNMI generally showing lower wind speeds than the platforms and other remote sensing data used in this study (AMSR2, ASCAT-RSS, WindSat, SMOS and JASON-2). It is difficult to conclude which dataset should be used as a reference. Even so, buoy and ASCAT-KNMI winds are likely to underestimate the real wind speed. The second result is that common wave-age dependent parameterizations produce unrealistic drags and are not appropriate for coupling, whereas a newly empirically-adjusted Charnock parameterization leads to higher winds compared to the default ECMWF parameterization. This proposed new parameterization may lead to more accurate results in an operational context. Article in Journal/Newspaper North Atlantic Northeast Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Quarterly Journal of the Royal Meteorological Society 144 711 317 332 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
air-sea exchanges northeast Atlantic winds IFS sea state roughness length drag coefficient wind stress |
spellingShingle |
air-sea exchanges northeast Atlantic winds IFS sea state roughness length drag coefficient wind stress Pineau-guillou, Lucia Ardhuin, Fabrice Bouin, Marie-noelle Redelsperger, Jean-luc Chapron, Bertrand Bidlot, Jean-raymond Quilfen, Yves Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations |
topic_facet |
air-sea exchanges northeast Atlantic winds IFS sea state roughness length drag coefficient wind stress |
description |
Strong winds may be biased in atmospheric models. Here the ECMWF coupled wave-atmosphere model is used (1) to evaluate strong winds against observations, (2) to test how alternative wind stress parameterizations could lead to a more accurate model. For the period of storms Kaat and Lilli (23 to 27 January 2014), we compared simulated winds with in-situ – moored buoys and platforms - and satellite observations available from the North Atlantic. Five wind stress parameterizations were evaluated. The first result is that moderate simulated winds (5-20 m s-1) match with all observations. However, for strong winds (above 20 m s-1), mean differences appear, as much as -7 m s-1 at 30 m s-1. Significant differences also exist between observations, with buoys and ASCAT-KNMI generally showing lower wind speeds than the platforms and other remote sensing data used in this study (AMSR2, ASCAT-RSS, WindSat, SMOS and JASON-2). It is difficult to conclude which dataset should be used as a reference. Even so, buoy and ASCAT-KNMI winds are likely to underestimate the real wind speed. The second result is that common wave-age dependent parameterizations produce unrealistic drags and are not appropriate for coupling, whereas a newly empirically-adjusted Charnock parameterization leads to higher winds compared to the default ECMWF parameterization. This proposed new parameterization may lead to more accurate results in an operational context. |
format |
Article in Journal/Newspaper |
author |
Pineau-guillou, Lucia Ardhuin, Fabrice Bouin, Marie-noelle Redelsperger, Jean-luc Chapron, Bertrand Bidlot, Jean-raymond Quilfen, Yves |
author_facet |
Pineau-guillou, Lucia Ardhuin, Fabrice Bouin, Marie-noelle Redelsperger, Jean-luc Chapron, Bertrand Bidlot, Jean-raymond Quilfen, Yves |
author_sort |
Pineau-guillou, Lucia |
title |
Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations |
title_short |
Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations |
title_full |
Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations |
title_fullStr |
Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations |
title_full_unstemmed |
Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations |
title_sort |
strong winds in a coupled wave-atmosphere model during a north atlantic storm event: evaluation against observations |
publisher |
Wiley |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00410/52118/52826.pdf https://doi.org/10.1002/qj.3205 https://archimer.ifremer.fr/doc/00410/52118/ |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Quarterly Journal Of The Royal Meteorological Society (0035-9009) (Wiley), 2018-01 , Vol. 144 , N. 711 Part.B , P. 317-332 |
op_relation |
https://archimer.ifremer.fr/doc/00410/52118/52826.pdf doi:10.1002/qj.3205 https://archimer.ifremer.fr/doc/00410/52118/ |
op_rights |
2017 Royal Meteorological Society info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/qj.3205 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
144 |
container_issue |
711 |
container_start_page |
317 |
op_container_end_page |
332 |
_version_ |
1766128854438510592 |