Earth's climate is decided here.At the quiet bottom of the world — now you can watch it happen.
The sea ice, the drifting icebergs, the ice shelves, the seismic pulse — the whole of Antarctica, live in one place.
A ring of sea ice the size of a continent forms and vanishes every year.
That white ring is Earth's mirror. It bounces sunlight back to space, drives the deep ocean currents that move heat around the whole planet, and holds the great ice shelves in place. When it grows and shrinks, the climate the rest of us live in shifts with it — quietly, years ahead of the headlines.
Almost no one is looking. The instruments are — and now you can look over their shoulder, any night, from your phone.
Today's ice is today's number.
Satellites read the frozen ocean every single day with passive microwave — through the polar dark, through cloud. We pull that reading straight in, next to the 1981–2010 normal, so you can see at a glance whether the ice is running ahead of where it should be, or falling behind.
Not one gauge. The continent, in every register.
The ring, day by day, against normal.
The giants, tracked as they drift and calve.
The floating buttresses holding the land ice back.
The continent's tremors and ice-quakes, live.
How far from normal, right now — the signal that matters.
The reading, voiced — the day's continent in five minutes.
The total ocean area at least 15% frozen, in millions of km². The size of the mirror — the raw number the whole system rests on.
Today's extent minus the long-term normal for this exact date. A number near zero is calm; a large negative is the ice running low. This is the one to watch.
Tabular giants shed from the shelves, tracked by the ice centers as they drift. Where they go, and how fast, tells you what the ocean underneath is doing.
Watch it free. Stay for the whole continent.
Antarctica lives inside Magna Earth — $14/mo or $129/yr.