Final answer:
Black soot decreases the albedo of snow, leading to increased absorption of solar radiation and faster snow melting due to positive feedbacks in climate dynamics.
Step-by-step explanation:
An airplane sprinkles black soot on a snow-covered field. The soot will increase the rate that the snow melts because the darker-colored soot absorbs more solar radiation than the light-colored snow. Unlike snow, which has a high albedo and reflects most solar radiation, soot has a low albedo and thus absorbs more heat, leading to faster melting of the snow. This process is a part of positive feedbacks in climate dynamics, where an initial change is amplified by the effects it induces, such as increased absorption of solar energy leading to further melting.