Different predictions by two NWP models of the surface pressure field east of Iceland
Abstract In February and March 1996, the French NWP model Arpège was run to give operational forecasts five days ahead. These forecasts were a part of preparations for FASTEX (Fronts and Atlantic Storm‐Track Experiment), whose field phase took place in 1997. The extensive collection and availability...
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crwiley:10.1017/s1350482798000875 2024-06-02T08:08:36+00:00 Different predictions by two NWP models of the surface pressure field east of Iceland Ólafsson, Haraldur 1998 http://dx.doi.org/10.1017/s1350482798000875 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1017%2FS1350482798000875 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1017/S1350482798000875 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteorological Applications volume 5, issue 3, page 253-261 ISSN 1350-4827 1469-8080 journal-article 1998 crwiley https://doi.org/10.1017/s1350482798000875 2024-05-03T11:36:11Z Abstract In February and March 1996, the French NWP model Arpège was run to give operational forecasts five days ahead. These forecasts were a part of preparations for FASTEX (Fronts and Atlantic Storm‐Track Experiment), whose field phase took place in 1997. The extensive collection and availability of model output during this period gave an excellent opportunity to study in real time the behaviour of different NWP models during the period of the year when strong winds and rapid changes in weather conditions are frequent. In this paper, we study a case where the ECMWF model predicted an incorrect pressure gradient at Northeast Iceland, while Arpège correctly simulated the gradient. The model errors are connected to anomalies in the mid‐tropospheric vorticity field, which is in general quite different in the two models. The differences in the vorticity fields are discussed in relation to orographic effects. Copyright © 1998 Royal Meteorological Society Article in Journal/Newspaper Iceland Wiley Online Library Meteorological Applications 5 3 253 261 |
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Wiley Online Library |
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English |
description |
Abstract In February and March 1996, the French NWP model Arpège was run to give operational forecasts five days ahead. These forecasts were a part of preparations for FASTEX (Fronts and Atlantic Storm‐Track Experiment), whose field phase took place in 1997. The extensive collection and availability of model output during this period gave an excellent opportunity to study in real time the behaviour of different NWP models during the period of the year when strong winds and rapid changes in weather conditions are frequent. In this paper, we study a case where the ECMWF model predicted an incorrect pressure gradient at Northeast Iceland, while Arpège correctly simulated the gradient. The model errors are connected to anomalies in the mid‐tropospheric vorticity field, which is in general quite different in the two models. The differences in the vorticity fields are discussed in relation to orographic effects. Copyright © 1998 Royal Meteorological Society |
format |
Article in Journal/Newspaper |
author |
Ólafsson, Haraldur |
spellingShingle |
Ólafsson, Haraldur Different predictions by two NWP models of the surface pressure field east of Iceland |
author_facet |
Ólafsson, Haraldur |
author_sort |
Ólafsson, Haraldur |
title |
Different predictions by two NWP models of the surface pressure field east of Iceland |
title_short |
Different predictions by two NWP models of the surface pressure field east of Iceland |
title_full |
Different predictions by two NWP models of the surface pressure field east of Iceland |
title_fullStr |
Different predictions by two NWP models of the surface pressure field east of Iceland |
title_full_unstemmed |
Different predictions by two NWP models of the surface pressure field east of Iceland |
title_sort |
different predictions by two nwp models of the surface pressure field east of iceland |
publisher |
Wiley |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s1350482798000875 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1017%2FS1350482798000875 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1017/S1350482798000875 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Meteorological Applications volume 5, issue 3, page 253-261 ISSN 1350-4827 1469-8080 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1017/s1350482798000875 |
container_title |
Meteorological Applications |
container_volume |
5 |
container_issue |
3 |
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253 |
op_container_end_page |
261 |
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1800753905417584640 |