ARTIFICIALLY PREPARED SURFACE FOR INDUCING RAINFALL

摘要

Artificially prepared surface for inducing rainfall. A size, shape, and placement is determined for a dark pattern (20, 22, 24, 26) to be applied to terrain surface (11). A darkening agent is applied to form the dark pattern (20, 22, 24, 26). Its size, shape and placement are calculated to enable it, by its higher temperature due to increased absorption of solar energy, to heat air flowing over it sufficiently to cause a convection current (18). The current penetrates a low altitude, temperature inversion (16) and allows moist surface air to rise so that precipitation can be formed by normal atmospheric mechanisms.