Aircraft-type dependency of contrail evolution

摘要: The impact of aircraft type on contrail evolution is assessed using a large eddy simulation model with Lagrangian ice microphysics. Six different ranging from the small regional airliner Bombardier CRJ to largest Airbus A380 are taken into account. Differences in wake vortex properties and fuel flow lead considerable variations early geometric depth crystal number. Larger produce contrails more crystals (assuming that number initially generated per kilogram constant). These initial differences reduced first minutes, as loss during phase stronger for larger aircraft. In supersaturated air, much deeper after 5 min than those A parameterization final vertical displacement system provided, depending only circulation stratification. Cloud resolving simulations used examine whether aircraft-induced have long-lasting mark. suggest synoptic scenario controls cirrus qualitatively. However, quantitative between various remain over total period 6 h. extinctions A380-produced about 1.5 2.5 times higher CRJ.