El Niño Index Time-series

Parameter: SST NINO.3 SST NINO3.4 SST NINO.4 Initial date: Jan (12/27) Feb (01/31) Mar (02/25) Apr (03/27) May (04/26) Jun (05/31) Jul (06/30) Aug (07/30) Sep (08/29) Oct (09/28) Nov (10/28) Dec (11/27)

Black: analysis
Blue: ensemble mean
Gray: each member(ensemble size=10)