Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin
Abstract The ability of 14 general circulation models (GCMs) to realistically simulate weather patterns and precipitation regimes affecting the Mackenzie River Basin has been assessed. Applying the method of self‐organizing maps to daily data from the model ensemble and the 40‐year reanalysis projec...
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crwiley:10.1002/joc.1753 2024-06-02T08:02:18+00:00 Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin Finnis, Joel Cassano, John Holland, Marika Serreze, Mark Uotila, Petteri NSF NASA 2008 http://dx.doi.org/10.1002/joc.1753 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1753 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1753 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 29, issue 9, page 1226-1243 ISSN 0899-8418 1097-0088 journal-article 2008 crwiley https://doi.org/10.1002/joc.1753 2024-05-03T10:49:37Z Abstract The ability of 14 general circulation models (GCMs) to realistically simulate weather patterns and precipitation regimes affecting the Mackenzie River Basin has been assessed. Applying the method of self‐organizing maps to daily data from the model ensemble and the 40‐year reanalysis project of the ECWMF (ERA‐40), a regional synoptic climatology of sea level pressure was developed and used to analyse the model output. GCM performance, as compared with ERA‐40, varies significantly between models and seasons, but is generally best during the summer and winter. In‐depth examination of a five‐model subset reveals biases in the placement of the Pacific storm track, which may be related to misrepresentations of the Beaufort High. Biases in Mackenzie Basin precipitation are only weakly connected to these circulation errors, and are, instead, primarily the result of inaccurate representations of basin‐scale precipitation regimes. In particular, models allow excessive orographic precipitation along the west coast of North America to intrude into the Mackenzie Basin. These results suggest that projections of the Mackenzie's response to climate change could benefit from climate downscaling studies. Copyright © 2008 Royal Meteorological Society Article in Journal/Newspaper Arctic Climate change Mackenzie Basin Mackenzie river Wiley Online Library Arctic Mackenzie River Pacific International Journal of Climatology 29 9 1226 1243 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The ability of 14 general circulation models (GCMs) to realistically simulate weather patterns and precipitation regimes affecting the Mackenzie River Basin has been assessed. Applying the method of self‐organizing maps to daily data from the model ensemble and the 40‐year reanalysis project of the ECWMF (ERA‐40), a regional synoptic climatology of sea level pressure was developed and used to analyse the model output. GCM performance, as compared with ERA‐40, varies significantly between models and seasons, but is generally best during the summer and winter. In‐depth examination of a five‐model subset reveals biases in the placement of the Pacific storm track, which may be related to misrepresentations of the Beaufort High. Biases in Mackenzie Basin precipitation are only weakly connected to these circulation errors, and are, instead, primarily the result of inaccurate representations of basin‐scale precipitation regimes. In particular, models allow excessive orographic precipitation along the west coast of North America to intrude into the Mackenzie Basin. These results suggest that projections of the Mackenzie's response to climate change could benefit from climate downscaling studies. Copyright © 2008 Royal Meteorological Society |
author2 |
NSF NASA |
format |
Article in Journal/Newspaper |
author |
Finnis, Joel Cassano, John Holland, Marika Serreze, Mark Uotila, Petteri |
spellingShingle |
Finnis, Joel Cassano, John Holland, Marika Serreze, Mark Uotila, Petteri Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin |
author_facet |
Finnis, Joel Cassano, John Holland, Marika Serreze, Mark Uotila, Petteri |
author_sort |
Finnis, Joel |
title |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin |
title_short |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin |
title_full |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin |
title_fullStr |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin |
title_full_unstemmed |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 1: the Mackenzie River Basin |
title_sort |
synoptically forced hydroclimatology of major arctic watersheds in general circulation models; part 1: the mackenzie river basin |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/joc.1753 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1753 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1753 |
geographic |
Arctic Mackenzie River Pacific |
geographic_facet |
Arctic Mackenzie River Pacific |
genre |
Arctic Climate change Mackenzie Basin Mackenzie river |
genre_facet |
Arctic Climate change Mackenzie Basin Mackenzie river |
op_source |
International Journal of Climatology volume 29, issue 9, page 1226-1243 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.1753 |
container_title |
International Journal of Climatology |
container_volume |
29 |
container_issue |
9 |
container_start_page |
1226 |
op_container_end_page |
1243 |
_version_ |
1800746813079158784 |