Marine Cloud Brightening Simulator

Marine cloud brightening sprays fine sea-salt aerosol into low marine stratocumulus clouds so the same amount of liquid water condenses onto more, smaller droplets — the Twomey effect — brightening the cloud and reflecting extra sunlight back to space. This simulator drives a small energy-balance model with two controls, fleet spray rate and seeded area coverage, and shows droplet number concentration, cloud albedo, regional radiative forcing and sea-surface temperature respond in real time, including the diminishing-returns "overseeding" regime where extra aerosol barely brightens the cloud any further.