Hadley circulation (Lorenz 1984 Hadley cell) — dx/dt = −y² − z² − αx + αF, dy/dt = xy − βxz − y + G, dz/dt = βxy + xz − z. Classic α=0.25 β=4 F=8 G=1 (α,β fixed). Dual F+G sliders. x = westerly intensity; y,z = cosine/sine Hadley-wave phases. Bulk centroid ≈ (1.02, 0.05, 0.28) from warm 20k + 80k RK4 @ dt=0.005. Distinct from Dequan–Li, Coullet, Burke–Shaw, Sprott–Linz A–S, Lorenz-84 four-slider page, Finance, Bouali, Genesio–Tesi, Arnéodo, Newton–Leipnik, Rabinovich–Fabrikant, Nosé–Hoover, Rucklidge, Wang–Sun, Lü, Chen, four-wing Qi, Dadras, Halvorsen, Chua, Aizawa, Thomas, Rössler, Lorenz butterfly, Newton basins. RK4, not dequan-li.html, not coullet.html, not lorenz84.html. Gold low-alpha trail, cap 650. RM = settled silhouette, no animate-on.