Type of dataset: Ocean Indicator product

Digital Object Identifiers (DOIs): 

• El Niño Southern Oscillation (ENSO) Ocean Indicator : 10.24400/527896/a01-2025.008 - more metadata

Condition of access: distributed by AVISO under standard AVISO+ license agreement.

Contents: Monthly time series are computed and normalized.

Description: The ENSO (El Niño Southern Oscillation) index is based on the altimeter sea level anomalies over the Nino3.4 region in the Pacific ocean. The annual, seasonal cycles and 60-day signal have been filtered out and the sea level trend has been removed. Monthly time series are computed and normalized.

Geographic coverage: nino3.4.

Citation: "The ENSO (El Niño Southern Oscillation) Ocean Indicator product is produced and made freely available by AVISO and DUACS teams". AVISO/DUACS, 2025. El Niño Southern Oscillation Ocean Indicator product (vDT2024) [Data set]. CNES. https://doi.org/10.24400/527896/A01-2025.008 

Resources:

• El Niño Southern Oscillation Index product User Handbook
• A map of Sea Surface Temperature is also available
• See also previous maps for MSLA and Sea Surface Temperature
• A standardized Sea Surface Temperature is also available
• link to ‘Applications’ page
• Posters: Click on each image to download the posters
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