Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation
Global climate models have circulation biases that the community aims to reduce, for instance through high‐resolution dynamical downscaling. We used the Weather Research and Forecasting model (WRF) to downscale both ERA‐Interim and a bias‐corrected version of the Norwegian climate model NorESM1‐M on...
Published in: | Quarterly Journal of the Royal Meteorological Society |
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crwiley:10.1002/qj.3588 2024-06-02T08:11:13+00:00 Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation Pontoppidan, Marie Kolstad, Erik W. Sobolowski, Stefan P. Sorteberg, Asgeir Liu, Changhai Rasmussen, Roy Norges Forskningsråd 2019 http://dx.doi.org/10.1002/qj.3588 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.3588 https://onlinelibrary.wiley.com/doi/pdf/10.1002/qj.3588 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/qj.3588 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.3588 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Quarterly Journal of the Royal Meteorological Society volume 145, issue 723, page 2718-2732 ISSN 0035-9009 1477-870X journal-article 2019 crwiley https://doi.org/10.1002/qj.3588 2024-05-03T11:29:10Z Global climate models have circulation biases that the community aims to reduce, for instance through high‐resolution dynamical downscaling. We used the Weather Research and Forecasting model (WRF) to downscale both ERA‐Interim and a bias‐corrected version of the Norwegian climate model NorESM1‐M on a high‐resolution grid. By varying the domain size, we investigated the influence of the driving data and highly resolved topography on the North Atlantic storm track and the precipitation in its exit region. In our largest domains, we found large‐scale circulation and storm track biases similar to those seen in global models and with spatial patterns independent of the driving data. The biases in the smaller domains were more dependent on the quality of the driving data. Nevertheless, the biases had little effect on the simulated precipitation in Norway. Although the added value of downscaling was clear with respect to the global climate models, all the downscaled simulations showed similar precipitation frequencies and intensities. We posit that, because the precipitation is so strongly governed by the local topographic forcing, a correct storm track is less critical for the precipitation distribution. Article in Journal/Newspaper North Atlantic Wiley Online Library Norway Quarterly Journal of the Royal Meteorological Society 145 723 2718 2732 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Global climate models have circulation biases that the community aims to reduce, for instance through high‐resolution dynamical downscaling. We used the Weather Research and Forecasting model (WRF) to downscale both ERA‐Interim and a bias‐corrected version of the Norwegian climate model NorESM1‐M on a high‐resolution grid. By varying the domain size, we investigated the influence of the driving data and highly resolved topography on the North Atlantic storm track and the precipitation in its exit region. In our largest domains, we found large‐scale circulation and storm track biases similar to those seen in global models and with spatial patterns independent of the driving data. The biases in the smaller domains were more dependent on the quality of the driving data. Nevertheless, the biases had little effect on the simulated precipitation in Norway. Although the added value of downscaling was clear with respect to the global climate models, all the downscaled simulations showed similar precipitation frequencies and intensities. We posit that, because the precipitation is so strongly governed by the local topographic forcing, a correct storm track is less critical for the precipitation distribution. |
author2 |
Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Pontoppidan, Marie Kolstad, Erik W. Sobolowski, Stefan P. Sorteberg, Asgeir Liu, Changhai Rasmussen, Roy |
spellingShingle |
Pontoppidan, Marie Kolstad, Erik W. Sobolowski, Stefan P. Sorteberg, Asgeir Liu, Changhai Rasmussen, Roy Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation |
author_facet |
Pontoppidan, Marie Kolstad, Erik W. Sobolowski, Stefan P. Sorteberg, Asgeir Liu, Changhai Rasmussen, Roy |
author_sort |
Pontoppidan, Marie |
title |
Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation |
title_short |
Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation |
title_full |
Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation |
title_fullStr |
Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation |
title_full_unstemmed |
Large‐scale regional model biases in the extratropical North Atlantic storm track and impacts on downstream precipitation |
title_sort |
large‐scale regional model biases in the extratropical north atlantic storm track and impacts on downstream precipitation |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/qj.3588 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.3588 https://onlinelibrary.wiley.com/doi/pdf/10.1002/qj.3588 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/qj.3588 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.3588 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 145, issue 723, page 2718-2732 ISSN 0035-9009 1477-870X |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1002/qj.3588 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
145 |
container_issue |
723 |
container_start_page |
2718 |
op_container_end_page |
2732 |
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1800757278845960192 |