Daily Antarctic Oscillation Index (AAO)
Entry ID: NOAA_NWS_CPC_AAO

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

The daily Antarctic Oscillation (AAO) index is constructed by projecting the daily (00Z) 700mb height anomalies poleward of 20S onto the loading pattern of the AAO.

The daily AAO 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 using 1979-2000 base period. A 3-day running mean is applied for the forecast indices.

The monthly mean AAO index is available from January 1979 to the present.

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


Link: GET DATA
Description: Access to AAO monthly means since 1979.


Geographic Coverage
 N: -20.0 S: -90.0  E: 180.0  W: -180.0
 Min Altitude: 0 MB  Max Altitude: 700 MB

Data Set Citation
Dataset Originator/Creator: NOAA/NWS/CPC
Dataset Title: Daily Antarctic 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: 1979-01-01


Location Keywords
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR
GEOGRAPHIC REGION > SOUTHERN HEMISPHERE


Data Resolution
Temporal Resolution: monthly mean


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


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Instrument
RADIOSONDES    [Information]


Keywords
AAO
Antarctic Oscillation Index
climate index
climate indices
forecast indices
Southern Hemisphere Annular Mode
Southern Annular Mode
SAM
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: AAO Index

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



Creation and Review Dates
DIF Creation Date: 2003-02-10
Last DIF Revision Date: 2009-11-04

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