West Pacific Teleconnection Patterns from NOAA/Climate Prediction Center
Entry ID: NOAA_NWS_CPC_WP

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Summary
Abstract: [Source: NOAA Climate Prediction Center, http://www.cpc.ncep.noaa.gov/ ]

The WP pattern is a primary mode of low-frequency variability over the North Pacific in all months, and has been previously described by both Barnston and Livezey (1987) and Wallace and Gutzler (1981). During winter and spring, the pattern consists of a north-south dipole of anomalies, with one center located over the Kamchatka Peninsula and another broad center of opposite sign covering portions of southeastern Asia and the low latitudes of the extreme western North Pacific. Therefore, strong positive or negative phases of this pattern reflect pronounced zonal and meridional variations in the location and intensity of the entrance region of the Pacific (or East Asian) jet steam.

In the summer and fall, the WP pattern becomes increasingly wave-like, and a third prominent center appears over Alaska and the Beaufort Sea, with a sign opposite to the center over the western North Pacific. This wave structure is most evident in the Fall, when it extends downstream along a quasi great-circle route into the western United States. The time series of the WP pattern indicates considerable intermonthly and interannual variability, and persistence of a particular phase of the pattern is relatively common.

Related URL
Link: GET DATA
Description: Access to WP documentation, graphs and data


Link: GET DATA
Description: Access to WP Index data since 1948


Geographic Coverage
 N: 45.0 S: 0.0  E: -165.0  W: 90.0

Data Set Citation
Dataset Originator/Creator: NOAA/NWS/CPC
Dataset Title: West Pacific 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/wp.shtml


Temporal Coverage
Start Date: 1948-01-01


Location Keywords
OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
OCEAN > PACIFIC OCEAN
GEOGRAPHIC REGION > NORTHERN HEMISPHERE


Data Resolution
Temporal Resolution: daily, monthly, seasonal


Science Keywords
ATMOSPHERE >ALTITUDE >GEOPOTENTIAL HEIGHT    [Definition]
ATMOSPHERE >ATMOSPHERIC PRESSURE >OSCILLATIONS >WEST PACIFIC PATTERN    [Definition]
ATMOSPHERE >ATMOSPHERIC PRESSURE >PRESSURE ANOMALIES    [Definition]
CLIMATE INDICATORS >ATMOSPHERIC/OCEAN INDICATORS >TELECONNECTIONS >WEST PACIFIC INDEX    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Keywords
West Pacific Pattern
climate index
climate indices
forecast indices
atmospheric circulation
climate change
teleconnections


Data Set Progress
IN WORK


Originating Center
NOAA/NWS/CPC


Data Center
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: West Pacific Pattern

Data Center Personnel
Name: ED O'LENIC
Email: Ed.Olenic at noaa.gov



Distribution
Distribution_Media: online www
Distribution_Format: ascii
Fees: none


Personnel
ED O'LENIC
Role: TECHNICAL CONTACT
Email: Ed.Olenic at noaa.gov


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.

Creation and Review Dates
DIF Creation Date: 2003-02-19
Last DIF Revision Date: 2009-11-04

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