Fig. 9From: Forecasts of future scenarios for airport noise based on collection and processing of web dataVariations in LDEN (a) and Lmax,avg (b) at Vienna International Airport in 2018 due exclusively to the implementation of terrain elevation data, without fleet substitution (ΔdB = level considering elevation – level considering flat terrain). The elevated regions (above 200 or 300 m) are enclosed by contour linesBack to article page