RPCAm_PT
Pacific Transition (RPCA monthly)
Monthly Pacific Transition index from the rotated-PCA fit of the month's standardized 500-hPa anomaly map; compare the official CPC value. August–September only. — Barnston & Livezey 1987; NOAA CPC
DATA THROUGH 2026-10-12 · UPDATED 2026-10-13 11:02 UTC
Monthly Pacific Transition index from the rotated-PCA fit of the month's standardized 500-hPa anomaly map; compare the official CPC value. August–September only. — Barnston & Livezey 1987; NOAA CPC