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Ocean indicators products
El Niño Southern Oscillation - ENSO

El Niño Southern Oscillation (ENSO) Ocean Indicator product

Latest monthly mean of Sea Level Anomalies over the Tropical Pacific (MSLA are computed from SSALTO/Duacs), annual and seasonal cycles removed. Credits Cnes/CLS.

Standardized Sea Level Anomalies over the Nino3.4 region (MSLA are computed from SSALTO/Duacs maps). Credits CNES/CLS.

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 Ocean Indicator 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
Posters: Click on each image to download the posters

El Nino Ocean Indicator product

Product files	Version	AVISO Distribution services	Delivery delay	File size	Handbook
MSLA time series	vDT2024	https server or CNES AVISO THREDDS Data Server access: https://tds%40odatis-ocean.fr:odatis@tds-odatis.aviso.altimetry.fr/thredds/catalog/el-nino-southern-oscillation/catalog.html	monthly	30 Kb	El Niño Ocean Indicator product Handbbok
SST time series	vDT2024		monthly	30 Kb	El Niño Ocean Indicator product Handbbok

Data

Products guide.
Products .
- Sea surface height products .
- Value-added products .
- Wind/wave products .
- Auxiliary products .
- Ice products .
- Ocean indicators products .
  - El Niño Southern Oscillation - ENSO.
  - Mean Sea Level .
  - Kuroshio .
  - Ocean Heat Content and Earth Energy Imbalance .
  - Barystatic and manometric sea level changes from satellite geodesy.
  - Ionian Sea circulation.
- Ocean data challenges .
- Tide Gauges products.
Data access .
Product information .
CALVAL .

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