Airport Noise Contours Lnight Round 1

Data indicating the level of noise according to the strategic noise mapping of airport sources within areas with a population of at least 250,000 people (agglomerations) and airports with more than 50,000 (fifty thousand) air traffic movements per year. Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700.This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).