Chart Room

The whole world ocean on one chart — 180°W to 180°E, 78°S to 82°N — from two Copernicus Marine forecast systems at 1/12° (about 9 km), fine enough to resolve individual eddies. Mercator GLO12 gives the surface current, sea temperature and sea level every hour; MFWAM gives the waves every three hours.

Each run starts at T0, 00 UTC on the day it is issued. The timeline opens two days earlier: everything left of the gold rule is the system's own analysis of what the ocean did, everything right of it is forecast, to ten days. Switching model holds the valid time, not the step.

Speeds are in knots by default — mariners' units — with metres per second a click away; the flow animation's pace is exaggerated so a half-knot drift is visible, and its colour is the speed. Wave arrows point where the sea is going, not where it comes from. Daily fields (anomaly, mixed layer) are drawn at noon UTC, the middle of the day they average.

Colour tables are cmocean's, pinned to fixed values, and every pixel reads back — hover anywhere for the number. Labels read the open water just off each port, cape and strait. This is a model, not an observation, and it is not for navigation.