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Daily Madden-Julian Oscillation (MJO) Indices from NOAA/Climate Prediction Center

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Abstract: [Source: NOAA Climate Prediction Center, ]

An extended Empirical Orthogonal Function (EEOF) analysis is applied to pentad velocity potential at 200-hPa for ENSO-neutral and weak ENSO winters (November-April) during 1979-2000. The first EEOF is composed of ten time-lagged patterns . Ten Madden-Julian Oscillation (MJO) indices are constructed by regressing the daily ... View entire text
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Description: Access to MJO Index documentation, graphs, and data
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Caption:  MJO for 2002
Description:  MJO Indices for 2002

Geographic Coverage
Spatial coordinates   
  N: 30.0   S: 0.0   E: 70.0   W: 80.0
Min Altitude: 0HPA Max Altitude: 200 HPA

Data Set Citation
Dataset Originator/Creator: NOAA/NWS/CPC
Dataset Title: Daily Madden-Julian Oscillation Indices
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:
Temporal Coverage
Start Date: 1978-01-01
Data Resolution
Temporal Resolution: daily, pentad
Data Set Progress
Originating Center
Distribution Media: online www
Distribution Format: ascii
Fees: none
Email: Jon.Gottschalck at
Madden, R. A., and P. R. Julian, 1971: Detection of a 40-50 day
oscillation in the zonal wind in the tropical Pacific.J. Atmos. Sci.,
28, 702-708.

Madden, R. A., and P. R. Julian, 1994: Observations of the 40-50 day
tropical oscillation: a review. Mon. Wea. Rev., 122, 814-837.
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Creation and Review Dates
DIF Creation Date: 2003-02-13
Last DIF Revision Date: 2017-08-23