Daily Arctic Oscillation (AO) Index from NOAA/NWS/Center for Climate Prediction
Entry ID: NOAA_NWS_CPC_AO

[ Get Data ]
[ Update this Record ]

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

The daily Arctic Oscillation (AO) index is constructed by projecting the daily (00Z) 1000mb height anomalies poleward of 20N onto the loading pattern of the AO.

The daily AO index and its forecasts using MRF and Ensemble mean forecast data are available for the previous 120 days and they are normalized by standard deviation of the monthly AO index from 1979 to 2000. A 3-day running mean is applied for the forecast indices.

Monthly mean and seasonal (JFM) AO Index data are also available since 1950.

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


Link: GET DATA
Description: Access to AO monthly means since 1950.


Geographic Coverage
 N: 90.0 S: 20.0  E: 180.0  W: -180.0
 Min Altitude: 1000MB  Max Altitude: 0MB

Data Set Citation
Dataset Originator/Creator: NOAA/NWS/CPC
Dataset Title: Arctic Oscillation Index
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/products/precip/CWlink/daily_ao_index/...


Temporal Coverage
Start Date: 1950-01-01


Location Keywords
GEOGRAPHIC REGION > ARCTIC
GEOGRAPHIC REGION > NORTHERN HEMISPHERE
GEOGRAPHIC REGION > POLAR


Data Resolution
Temporal Resolution: daily, monthly mean, seasonal mean


Science Keywords
ATMOSPHERE >ALTITUDE >GEOPOTENTIAL HEIGHT    [Definition]
ATMOSPHERE >ATMOSPHERIC PRESSURE >OSCILLATIONS >ARCTIC OSCILLATION INDEX    [Definition]
ATMOSPHERE >ATMOSPHERIC PRESSURE >PRESSURE ANOMALIES    [Definition]
CLIMATE INDICATORS >ATMOSPHERIC/OCEAN INDICATORS >TELECONNECTIONS >ARCTIC OSCILLATION >AO    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Keywords
AO
Arctic Oscillation Index
climate index
climate indices
forecast indices
Northern Hemisphere Annular Mode
Northern Annular Mode
NAM
polar vortex
atmospheric circulation
climate change


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: AO Index

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



Distribution
Distribution_Media: online www
Distribution_Format: ascii
Fees: none



Creation and Review Dates
DIF Creation Date: 2003-02-12
Last DIF Revision Date: 2009-11-04

[ Update this Record ]


Link to Web Site