Atmospheric teleconnection indices sourced from NOAA/CPC, NOAA/ESRL, updated monthly:

• Arctic Oscillation AO
• North Atlantic Oscillation NAO
• Pacific-North American Pattern PNA
• Pacific Decadal Oscillation PDO (sst)
• Southern Annular Mode SAM
• Southern Oscillation Index SOI
• Atlantic Multidecadal Oscillation AMO (sst)

Outgoing Longwave Radiation (OLR) indices for ENSO sourced from University of Maryland OLR Portal, updated daily based on data availability:

• El Niño OLR Index
• La Niña OLR Index