FORECASTCONTEXT.COM · THE LARGE-SCALE STATE BEHIND THE FORECAST BRIEFINGMOTIONOUTLOOKMETHODSAPI☀ AUTO

FORECAST CONTEXT

DATA THROUGH 2026-10-12 · UPDATED 2026-10-13 11:02 UTC

ERA5 + GFS2.5°DAILY
BriefingOfficial indicesOfficial · Angular momentum
PSL_GLAAM

Global relative AAM (PSL)

Monthly global relative atmospheric angular momentum anomaly (R1). Discontinued: ends Feb 2014. — PSL · base provider