[Keyword='climate index']
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Polar/Eurasia Teleconnection Patterns from NOAA/Climate Prediction Center Entry ID: NOAA_NWS_CPC_POLAREUR |
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Summary
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Abstract:
[Source: NOAA Climate Prediction Center, http://www.cpc.ncep.noaa.gov/ ] The Polar/ Eurasian pattern appears only in the winter, and is the most prominent mode of low-frequency variability during December and February. The pattern consists of one main anomaly center over the polar region, and separate centers of opposite sign to the polar anomaly over Europe and northeastern China. Thus, the pattern reflects major changes in the strength of the circumpolar circulation, and reveals the accompanying systematic changes which occur in the midlatitude circulation over large portions of Europe and Asia. The polar/Eurasian pattern exhibits strong intradecadal and interdecadal variability, with several consecutive winters of a positive phase of the pattern often followed by several winters having a negative phase of the pattern. For example, the winters from 1964/65 through 1969/70 were dominated by a negative phase of the pattern, followed by a five-year period from 1971/72 through 1975/76 dominated by a positive phase of the pattern. A negative phase then returned for much of the decade between 1976/77 and 1985/86, followed by a prolonged positive phase of the pattern from 1988/89 through 1992/93. These prolonged positive phases of the pattern reflected below-normal heights throughout the polar region and an enhanced circumpolar vortex, in combination with above-normal heights over much of Europe and eastern Asia. In contrast, the prolonged negative phases of the pattern reflected above-normal heights throughout the polar region and a weaker than normal polar vortex, in combination with below-normal heights over much of Europe and eastern Asia. |
Related URL
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Link:
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Description: Access to SCAND documentation, graphs and data |
Geographic Coverage
| N: 90.0 | S: 50.0 | E: 180.0 | W: -180.0 |
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Data Set Citation
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Dataset Originator/Creator:
NOAA/NWS/CPC
Dataset Title: Polar/Eurasia Teleconnection Pattern Dataset Series Name: NOAA/NWS/CPC Indices and Forecasts Dataset Release Date: ongoing Dataset Release Place: Camp Springs, MD Dataset Publisher: NOAA National Weather Service, Center for Climate Prediction Online Resource: http://www.cpc.ncep.noaa.gov/data/teledoc/poleur.shtml |
Temporal Coverage
| Start Date: 1950-01-01 |
Location Keywords
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OCEAN
> ATLANTIC OCEAN
GEOGRAPHIC REGION > ARCTIC GEOGRAPHIC REGION > EURASIA GEOGRAPHIC REGION > NORTHERN HEMISPHERE GEOGRAPHIC REGION > POLAR |
Data Resolution
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Temporal Resolution:
monthly, seasonal
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Science Keywords
| ATMOSPHERE >ALTITUDE >GEOPOTENTIAL HEIGHT [Definition] |
| ATMOSPHERE >ATMOSPHERIC PRESSURE >OSCILLATIONS >POLAR/EURASIA PATTERN [Definition] |
| ATMOSPHERE >ATMOSPHERIC PRESSURE >PRESSURE ANOMALIES [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
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Keywords
| Polar/Eurasia Pattern |
| climate index |
| climate indices |
| forecast indices |
| atmospheric circulation |
| climate change |
| teleconnections |
Data Set Progress
| IN WORK |
Originating Center
| NOAA/NWS/CPC |
Data Center
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Climate Prediction Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
[Information]
Data Center URL: http://www.cpc.ncep.noaa.gov/ Dataset ID: Polar/Eurasia Pattern
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Distribution
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Distribution_Media:
online www
Distribution_Format: ascii Fees: none |
Personnel
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ED
O'LENIC Role: DIF AUTHOR Email: Ed.Olenic at noaa.gov |
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SCOTT
A.
RITZ Role: DIF AUTHOR Phone: 301-614-5126 Fax: 301-614-5268 Email: Scott.A.Ritz at nasa.gov Contact Address: NASA Goddard Space Flight Center Global Change Master Directory City: Greenbelt Province or State: Maryland Postal Code: 20771 Country: USA |
Publications/References
Barnston, A.G., and R.E. Livezey, 1987: Classification, seasonality
and persistence of low - frequency atmospheric circulation
patterns. Mon. Wea. Rev., 115, 1083-1126.
Wallace J.M., and D.S. Gutzler, 1981: Teleconnections in the
geopotential height field during the Northern hemisphere
Winter. Mon. Wea. Rev., 109, 784-812.
and persistence of low - frequency atmospheric circulation
patterns. Mon. Wea. Rev., 115, 1083-1126.
Wallace J.M., and D.S. Gutzler, 1981: Teleconnections in the
geopotential height field during the Northern hemisphere
Winter. Mon. Wea. Rev., 109, 784-812.
Creation and Review Dates
DIF Creation Date:
2003-02-19
Last DIF Revision Date:
2009-11-04
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