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