City Block Sky View Factor Field

A single street canyon only tells you one number. Real cities are a patchwork of tall downtown cores and low-rise outskirts, and the sky view factor law that governs nighttime cooling applies cell by cell across that whole patchwork. This 2D simulator lays out a grid city block with a radial building-height profile, computes each cell's own sky view factor from the same Oke (1981) canyon formula used by the paired 3D single-street model, and runs the same radiative-convective energy balance independently in every cell — all driven by one shared day/night solar clock. The result renders as a live heat-field over the block, so you can watch the urban heat island emerge as a genuine spatial pattern: a warm downtown core that barely cools at night, ringed by a low-rise edge that tracks the open rural reference far more closely.