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ENSO and Asian Monsoon Monitoring Indices

Notice: Indices of OLR-PH, OLR-MC, OLR-DL, SAMOI-A, SAMOI-N, SAMOI-W from 1991 onward are based on NOAA CPC Blended OLR (CBO).


Explanation of indices

Text Format

Southern Oscillation

Equatorial Zonal Wind Index

OLR Index

Summer Asian Monsoon OLR Index