The following map shows the 2022 noise contour, produced by the UK Civil Aviation Authority (CAA). Using the slider on the map, the various contours can be viewed. The area of the 2022 summer day standard modal split 54 dBA Leq contour decreased by 27% to 47.3 km2 compared with 2019 (before the COVID-19 pandemic impact on traffic numbers). In addition, the 57 dBA area shrunk to 27.0 km2 and population count of 1,600 when compared with 2019 levels. It should be noted, however, that 2022 operated around 80% of the traffic compared to 2019 due to the effects of the COVID-19 pandemic on air traffic levels.
The full report from the UK CAA can be read in full here.
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