The following map shows the 2023 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 2023 summer day actual modal split 51 dBA Leq 16hr contour increased by 28% to 112.8 km2 compared with 2022. In addition, the 2023 summer day actual modal split 54dBA Leq 16hr contour increased by 18% to 32.1km2 compared with 2022. It should be noted that in 2023 London Gatwick operated around 90% of the traffic compared to 2019 due to the effects of the COVID-19 pandemic on air traffic levels. Flight numbers have continued to increase year on year through the post-pandemic recovery which is why the contours have increased compared to the previous year.
The full report from the UK CAA ERCD can be read in full here.
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