Frequency of Winter Coupled North Pacific/North America Circulation Regimes
The jet stream over North America alternates between a more zonal direction and a wavy pattern (a more meridional flow) associated with persistent blocking patterns. To better understand these important patterns, we base our study on the frequency of winter (November–February) events during 1981–202...
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ftdoajarticles:oai:doaj.org/article:b0b8d28287e5418699ddc176cd268c81 2023-05-15T15:06:44+02:00 Frequency of Winter Coupled North Pacific/North America Circulation Regimes James E. Overland Muyin Wang 2022-04-01T00:00:00Z https://doi.org/10.3390/cli10040054 https://doaj.org/article/b0b8d28287e5418699ddc176cd268c81 EN eng MDPI AG https://www.mdpi.com/2225-1154/10/4/54 https://doaj.org/toc/2225-1154 doi:10.3390/cli10040054 2225-1154 https://doaj.org/article/b0b8d28287e5418699ddc176cd268c81 Climate, Vol 10, Iss 54, p 54 (2022) jet stream blocking North Pacific North America Science Q article 2022 ftdoajarticles https://doi.org/10.3390/cli10040054 2022-12-31T00:32:41Z The jet stream over North America alternates between a more zonal direction and a wavy pattern (a more meridional flow) associated with persistent blocking patterns. To better understand these important patterns, we base our study on the frequency of winter (November–February) events during 1981–2020, based on four circulation regime types: blocking, the Alaskan Ridge, North American Ridge/Pacific Wave-Train; and zonal, the Pacific Trough and the central Pacific High/Arctic Low (Amini and Straus 2019). Increased information on within and between season variability is important, as the impacts of blocking include the California heatwave and mid-continent or east coast cold spells. Rather than extensive pattern duration or significant trends, temporal variability is the major feature. In some years the combination of the Alaskan Ridge and North American Ridge/Pacific Wave-Train patterns represent ~5 major events covering 35 days of the 120-day winter period, with individual events lasting 10 days. Within-season multiple occurrences and short durations dominate the winter meteorology of the continental United States. The characterization of the persistence of these blocking events is relevant for extended range forecasts. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Pacific Climate 10 4 54 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
jet stream blocking North Pacific North America Science Q |
spellingShingle |
jet stream blocking North Pacific North America Science Q James E. Overland Muyin Wang Frequency of Winter Coupled North Pacific/North America Circulation Regimes |
topic_facet |
jet stream blocking North Pacific North America Science Q |
description |
The jet stream over North America alternates between a more zonal direction and a wavy pattern (a more meridional flow) associated with persistent blocking patterns. To better understand these important patterns, we base our study on the frequency of winter (November–February) events during 1981–2020, based on four circulation regime types: blocking, the Alaskan Ridge, North American Ridge/Pacific Wave-Train; and zonal, the Pacific Trough and the central Pacific High/Arctic Low (Amini and Straus 2019). Increased information on within and between season variability is important, as the impacts of blocking include the California heatwave and mid-continent or east coast cold spells. Rather than extensive pattern duration or significant trends, temporal variability is the major feature. In some years the combination of the Alaskan Ridge and North American Ridge/Pacific Wave-Train patterns represent ~5 major events covering 35 days of the 120-day winter period, with individual events lasting 10 days. Within-season multiple occurrences and short durations dominate the winter meteorology of the continental United States. The characterization of the persistence of these blocking events is relevant for extended range forecasts. |
format |
Article in Journal/Newspaper |
author |
James E. Overland Muyin Wang |
author_facet |
James E. Overland Muyin Wang |
author_sort |
James E. Overland |
title |
Frequency of Winter Coupled North Pacific/North America Circulation Regimes |
title_short |
Frequency of Winter Coupled North Pacific/North America Circulation Regimes |
title_full |
Frequency of Winter Coupled North Pacific/North America Circulation Regimes |
title_fullStr |
Frequency of Winter Coupled North Pacific/North America Circulation Regimes |
title_full_unstemmed |
Frequency of Winter Coupled North Pacific/North America Circulation Regimes |
title_sort |
frequency of winter coupled north pacific/north america circulation regimes |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/cli10040054 https://doaj.org/article/b0b8d28287e5418699ddc176cd268c81 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Climate, Vol 10, Iss 54, p 54 (2022) |
op_relation |
https://www.mdpi.com/2225-1154/10/4/54 https://doaj.org/toc/2225-1154 doi:10.3390/cli10040054 2225-1154 https://doaj.org/article/b0b8d28287e5418699ddc176cd268c81 |
op_doi |
https://doi.org/10.3390/cli10040054 |
container_title |
Climate |
container_volume |
10 |
container_issue |
4 |
container_start_page |
54 |
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1766338285460783104 |