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Table 3 Official and present predictions at Heathrow Airport for 2025
From: Forecasts of future scenarios for airport noise based on collection and processing of web data
Metric | Official predictions | Present predictions | ||||
|---|---|---|---|---|---|---|
2016 | 2025 | % change | 2018 | 2025 | % change | |
Avg. summer day movements | 1266.7 | 1304.3 | + 2.9% | 1271.5 | 1271.5 | – |
Avg. summer night movements | 84.4 | 86.9 | + 2.9% | 79.5 | 79.5 | – |
Summer LAeq,day 51 dB [km2] | 329.4 | 290.6 | −11.7% | 180.4 | 157.7 | −12.6% |
Summer LAeq,day 54 dB [km2] | 184.3 | 166.2 | −9.8% | 105.1 | 93.5 | −11.0% |
Summer LAeq,night 45 dB [km2] | 193.8 | 163.7 | −15.5% | 142.6 | 124.0 | −13.0% |
Summer LAeq,night 48 dB [km2] | 115.2 | 95.1 | −17.4% | 87.4 | 76.1 | −12.9% |
Annual LDEN 50 dB [km2] | 498.1 | 436.7 | −12.3% | 295.6 | 266.3 | −9.9% |
Annual LDEN 55 dB [km2] | 198.0 | 176.0 | −11.1% | 127.8 | 111.6 | −12.7% |
Annual LAeq,night 45 dB [km2] | 174.8 | 154.6 | −11.6% | 142.6 | 124.0 | −13.0% |
Annual LAeq,night 50 dB [km2] | 74.0 | 59.0 | −20.2% | 59.9 | 51.7 | −13.7% |