Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds
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...
Published in: | International Journal of Climatology |
---|---|
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
John Wiley & Sons
2009
|
Subjects: | |
Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-313 https://doi.org/10.1002/joc.1769 |
id |
ftncar:oai:drupal-site.org:articles_15322 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_15322 2023-09-05T13:17:27+02:00 Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds Finnis, Joel (author) Cassano, John (author) Holland, Marika (author) Serreze, Mark (author) Uotila, Petteri (author) 2009-07-01 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-313 https://doi.org/10.1002/joc.1769 en eng John Wiley & Sons International Journal of Climatology http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-313 doi:10.1002/joc.1769 ark:/85065/d7st7qv3 Copyright 2009 Royal Meteorological Society. Text article 2009 ftncar https://doi.org/10.1002/joc.1769 2023-08-14T18:36:08Z 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. Article in Journal/Newspaper Arctic Climate change OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Yenisey ENVELOPE(82.680,82.680,71.828,71.828) International Journal of Climatology 29 9 1244 1261 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
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. |
author2 |
Finnis, Joel (author) Cassano, John (author) Holland, Marika (author) Serreze, Mark (author) Uotila, Petteri (author) |
format |
Article in Journal/Newspaper |
title |
Synoptically forced hydroclimatology of major Arctic watersheds in general circulation models; Part 2: Eurasian watersheds |
spellingShingle |
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 |
John Wiley & Sons |
publishDate |
2009 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-313 https://doi.org/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_relation |
International Journal of Climatology http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-313 doi:10.1002/joc.1769 ark:/85065/d7st7qv3 |
op_rights |
Copyright 2009 Royal Meteorological Society. |
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_ |
1776198620331114496 |