Seasonal ring-stacks

Each station is a stack of rings, one per decade (1950s base → 2020s top). Each ring is a seasonal rose: angle = month (Jan at top, clockwise), the bulge = how many record-days that month, hue = heat/cold, and brightness = how hard the records were broken (°C). Watch summer bulges grow and brighten up the stack.

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Drag = orbit (any angle). Scroll = zoom. Shift-drag = pan.

How to read this

Each station on the map raises a stack of rings, one per decade (1950s at the base → 2020s on top). Every ring is a seasonal rose.

Height — which decade (time runs upward).
Angle around a ring — month of the year (January at the top, clockwise to December).
Bulge / radius — how many record-days fell in that month.
Colour — red = heat records, blue = cold.
Brightness — record magnitude: how many °C the record beat the previous one (vivid = a big margin).

The story: summer arcs redden, brighten and grow as you rise up the stack; winter blues sit low and fade — warming, station by station.

Controls

Drag to orbit (any angle) · Scroll to zoom · Shift-drag to pan.
Heat / Both / Cold — which records to show.
Highlight — isolate a single decade's ring; Sweep time animates it through the decades.

What a "record" is

For each calendar day we ask which year was the most extreme on that day (within a ±7-day window). The map outline is Canada; stations are Environment & Climate Change Canada sites, 1950s–2020s. Method lineage: Kayla Joachim, 2024.