AMV (Trenberth–Shea), 10-yr low-pass

North Atlantic (0–60°N, 80°W–0°) minus 60°S–60°N SST anomaly (the AMO series), monthly, through a 10-yr zero-phase Chebyshev-I low-pass and stepped to daily; ends are provisional. — Trenberth & Shea 2006, Geophys. Res. Lett. 33, L12704, doi:10.1029/2006GL026894