The Relationship of Aircraft Noise on the Side of Runway with Meteorological Conditions Based on Long-term Unattended Noise Monitoring

Abstract

In the neighborhood of airports, especially on the side of runway, the sound of aircraft take-offs and landings can be heard sometimes as loud or other times as weak. No doubt, it depends on meteorological conditions such as wind and temperature, but there are few investigations that statistically analyzed the relationship between levels of aircraft noise and meteorological conditions. Here, we report a result of analysis on long-term observations of meteorological conditions and aircraft noise during take-off roll on the runway. The data was obtained on the side of a runway using an unattended noise monitoring system installed at Narita Airport. The result shows that sound level becomes lower on downwind condition, while it becomes higher on upwind condition. As for temperature condition, the sound level is high when the temperature gradient is inversion, being compared with that on lapse condition. Moreover, it seems to be appropriate to use vector wind calm and temperature gradient neutral as representative for long-term average noise level.