🌬️ Sea-Breeze Front: Gravity-Current Speed, Inland Arrival and Cumulus Line Lab — 2D Cross-Section, Front Speed and Inland Arrival

2D companion of the sea-breeze front lab: a vertical cross-section of the coast through the day with the marine layer, cumulus line and town, plus front-position, temperature, speed and sensitivity plots, using the same front-tracking functions as the 3D scene.