The northern lights over an open, near-still sea. Curtains of green and violet drifting overhead, with nothing but the swell underneath. Generated live in your browser.
A clearing arctic sky with the aurora out: curtains of oxygen green low down, shading to red-violet where they climb, drifting and folding over a sea with barely a wave on it.
The lights are drawn rather than filmed. The view ray is projected onto a thin emission layer high above the water, which is close to what is physically happening — the glow sits around a hundred kilometres up — and it is why curtains overhead look wide and near while those toward the horizon compress and converge. Inside the band, a separate and much sharper pattern gives the vertical rays, because the particles causing them follow magnetic field lines and arrive in essentially parallel streaks.
The colours are the emission lines themselves rather than a palette: oxygen at 557.7 nanometres for the green, the 630.0 line for the red above it, and molecular nitrogen for the violet along the bottom edge. Ordering them by altitude is most of what makes a curtain read as one object rather than as coloured fog.
There is no rain and no thunder here, so what you hear is the swell alone. The aurora itself is silent, as it is outside.
Every control stays adjustable once the scene has loaded, and the live-weather toggle hands it back to drifting on its own.
Rain, wind and thunder generated live in your browser — never looped, never the same twice.
Starts silent — turn sound on when you're ready
WASD to move ·QE to turn ·ZX to look up and down