NCAR Climate Data Guide Content with Tag: ENSO

Multivariate ENSO Index
Years of Record: 1950/01 to 2013/01
The Multivariate ENSO Index (MEI) on the six main observed variables over the tropical Pacific. These six variables are: sea-level pressure (P), zonal (U) and meridional (V) components of the surface wind, sea surface temperature (S), surface air temperature (A), and total cloudiness fraction of...
Formats: ascii Timestep: Monthly Domain: Pacific Ocean
The Oceanic Nino Index (ONI), a variant of the Nino 3.4 index
Nino SST Indices (Nino 1+2, 3, 3.4, 4; ONI and TNI)
Years of Record: 1870/01 to 2018/10
There are several indices used to monitor the tropical Pacific, all of which are based on SST anomalies averaged across a given region.  Usually the anomalies are computed relative to a base period of 30 years.  The Niño 3.4 index and the Oceanic Niño Index (ONI) are the most...
Main variables and Earth System components:
Timestep: Monthly Domain: Pacific Ocean, Tropics
See Expert Guidance by Trenberth, Kevin
Southern Oscillation Indices: Signal, Noise and Tahiti/Darwin SLP (SOI)
Years of Record: 1866/01 to 2019/03
The Southern Oscillation Index (SOI) is a time series used to characterize the large scale sea level pressure (SLP) patterns in the tropical Pacific. Monthly mean SLP at Tahiti [T] and Darwin [D] are used. An optimal SOI can be constructed. It consists of  [T-D] which is a measure of the large...
Main variables and Earth System components:
Formats: netCDF | ascii Timestep: Monthly Domain: Australia, Pacific Ocean, Tropics
See Expert Guidance by Trenberth, Kevin
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