Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds
Abstract A synoptic climatology of daily sea level pressure patterns over Eurasia has been created and used to assess simulations of regional circulation and hydroclimatology from fourteen general circulation models (GCMs). The quality of simulated circulation varies considerably among both individu...
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crwiley:10.1002/joc.1769 2024-06-02T08:02:24+00:00 Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds Finnis, Joel Cassano, John J. Holland, Marika Serreze, Mark C. Uotila, Petteri NSF NASA 2008 http://dx.doi.org/10.1002/joc.1769 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1769 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1769 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 29, issue 9, page 1244-1261 ISSN 0899-8418 1097-0088 journal-article 2008 crwiley https://doi.org/10.1002/joc.1769 2024-05-03T10:39:04Z Abstract A synoptic climatology of daily sea level pressure patterns over Eurasia has been created and used to assess simulations of regional circulation and hydroclimatology from fourteen general circulation models (GCMs). The quality of simulated circulation varies considerably among both individual models and seasons, with summer and winter showing the best agreement with reanalysis data. Close examination of five select models reveals a tendency for GCMs to either over‐ or under‐emphasize the strength and persistence of the winter storm track over Eurasia, with an overemphasized track resulting in better agreement with reanalyses on annual time‐scales. Although pronounced, these biases have relatively little impact on the hydroclimatology of the Ob, Yenisey, and Lena watersheds. Instead, large‐scale precipitation biases appear to be primarily the result of systematic errors in simulated precipitation processes, perhaps related to relevant parameterization schemes. Finally, an effort was made to identify and characterize 20th century precipitation trends related to greenhouse gas induced climate change, by decomposing precipitation time series on the basis of variability in circulation and the mean intensity of precipitation events. Results suggest the influence of anthropogenic climate change over the past forty years is masked by natural variability. Copyright © 2008 Royal Meteorological Society Article in Journal/Newspaper Arctic Climate change Wiley Online Library Arctic Yenisey ENVELOPE(82.680,82.680,71.828,71.828) International Journal of Climatology 29 9 1244 1261 |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A synoptic climatology of daily sea level pressure patterns over Eurasia has been created and used to assess simulations of regional circulation and hydroclimatology from fourteen general circulation models (GCMs). The quality of simulated circulation varies considerably among both individual models and seasons, with summer and winter showing the best agreement with reanalysis data. Close examination of five select models reveals a tendency for GCMs to either over‐ or under‐emphasize the strength and persistence of the winter storm track over Eurasia, with an overemphasized track resulting in better agreement with reanalyses on annual time‐scales. Although pronounced, these biases have relatively little impact on the hydroclimatology of the Ob, Yenisey, and Lena watersheds. Instead, large‐scale precipitation biases appear to be primarily the result of systematic errors in simulated precipitation processes, perhaps related to relevant parameterization schemes. Finally, an effort was made to identify and characterize 20th century precipitation trends related to greenhouse gas induced climate change, by decomposing precipitation time series on the basis of variability in circulation and the mean intensity of precipitation events. Results suggest the influence of anthropogenic climate change over the past forty years is masked by natural variability. Copyright © 2008 Royal Meteorological Society |
author2 |
NSF NASA |
format |
Article in Journal/Newspaper |
author |
Finnis, Joel Cassano, John J. Holland, Marika Serreze, Mark C. Uotila, Petteri |
spellingShingle |
Finnis, Joel Cassano, John J. Holland, Marika Serreze, Mark C. Uotila, Petteri Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds |
author_facet |
Finnis, Joel Cassano, John J. Holland, Marika Serreze, Mark C. Uotila, Petteri |
author_sort |
Finnis, Joel |
title |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds |
title_short |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds |
title_full |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds |
title_fullStr |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds |
title_full_unstemmed |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds |
title_sort |
synoptically forced hydroclimatology of major arctic watersheds in general circulation models; part 2: eurasian watersheds |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/joc.1769 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1769 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1769 |
long_lat |
ENVELOPE(82.680,82.680,71.828,71.828) |
geographic |
Arctic Yenisey |
geographic_facet |
Arctic Yenisey |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
International Journal of Climatology volume 29, issue 9, page 1244-1261 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.1769 |
container_title |
International Journal of Climatology |
container_volume |
29 |
container_issue |
9 |
container_start_page |
1244 |
op_container_end_page |
1261 |
_version_ |
1800746904770838528 |