This radial visualization displays daily global surface temperatures from 1940 to 2024, with each year drawn as a circular ring using D3’s `lineRadial` generator with `curveCatmullRom` interpolation. The Svelte component loads CSV data, applies scales for day-of-year angle and temperature radius, and highlights 2023 in pink and 2024 in blue while older years appear as semi-transparent white strokes. The code uses `d3.csv`, `scaleLinear`, `extent`, and `groups` from D3 v7, with data sourced from Climate Reanalyzer.