Trends and Variability of North Pacific Polar Lows

The 6-hourly 1948–2010 NCEP 1 reanalyses have been dynamically downscaled for the region of the North Pacific. With a detecting-and-tracking algorithm, the climatology of North Pacific Polar Lows has been constructed. This derived climatology is consistent with the limited observational evidence in...

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Main Authors: Fei Chen, Hans von Storch
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:Advances in Meteorology
Online Access:http://dx.doi.org/10.1155/2013/170387
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author Fei Chen
Hans von Storch
author_facet Fei Chen
Hans von Storch
author_sort Fei Chen
collection DOAJ
description The 6-hourly 1948–2010 NCEP 1 reanalyses have been dynamically downscaled for the region of the North Pacific. With a detecting-and-tracking algorithm, the climatology of North Pacific Polar Lows has been constructed. This derived climatology is consistent with the limited observational evidence in terms of frequency and spatial distribution. The climatology exhibits strong year-to-year variability but weak decadal variability and a small positive trend. A canonical correlation analysis describes the conditioning of the formation of Polar Lows by characteristic seasonal mean flow regimes, which favor, or limit, cold air outbreaks and upper air troughs.
format Article
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institution Kabale University
issn 1687-9309
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publishDate 2013-01-01
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spelling doaj-art-216141f7507643d8a2a4f6e944a0fa382025-08-20T03:54:42ZengWileyAdvances in Meteorology1687-93091687-93172013-01-01201310.1155/2013/170387170387Trends and Variability of North Pacific Polar LowsFei Chen0Hans von Storch1Institute of Coastal Research, Helmholtz-Zentrum Geesthacht, GermanyInstitute of Coastal Research, Helmholtz-Zentrum Geesthacht, GermanyThe 6-hourly 1948–2010 NCEP 1 reanalyses have been dynamically downscaled for the region of the North Pacific. With a detecting-and-tracking algorithm, the climatology of North Pacific Polar Lows has been constructed. This derived climatology is consistent with the limited observational evidence in terms of frequency and spatial distribution. The climatology exhibits strong year-to-year variability but weak decadal variability and a small positive trend. A canonical correlation analysis describes the conditioning of the formation of Polar Lows by characteristic seasonal mean flow regimes, which favor, or limit, cold air outbreaks and upper air troughs.http://dx.doi.org/10.1155/2013/170387
spellingShingle Fei Chen
Hans von Storch
Trends and Variability of North Pacific Polar Lows
Advances in Meteorology
title Trends and Variability of North Pacific Polar Lows
title_full Trends and Variability of North Pacific Polar Lows
title_fullStr Trends and Variability of North Pacific Polar Lows
title_full_unstemmed Trends and Variability of North Pacific Polar Lows
title_short Trends and Variability of North Pacific Polar Lows
title_sort trends and variability of north pacific polar lows
url http://dx.doi.org/10.1155/2013/170387
work_keys_str_mv AT feichen trendsandvariabilityofnorthpacificpolarlows
AT hansvonstorch trendsandvariabilityofnorthpacificpolarlows