Noise levels around the Schiphol airport

Scope
Noise levels describes the noise levels around the Schiphol airport in the Netherlands.

Description

These contents are from EUROCONTROL

Above certain noise levels (if it is too quiet measurement can become inaccurate), the noise levels on the ground from aircraft operations can be measured using carefully sited, purpose designed microphones. This is particularly useful to measure how an aircraft is being flown. Because of the effects of factors such as ambient noise and weather, individual measurements only give a snapshot assessment and do not always reflect the average situation. For this reason measurement is most often used in assessing operational performance rather than overall noise impact. To reach an understanding of average noise levels, noise is usually modelled using computer programmes that simulate aircraft “virtually” following an airports operating procedures, but with suitable variability such as track dispersion to make it more realistic. These models, such as the widely used “International Noise Model”, produce aircraft noise footprints for the number of and type of aircraft using an airport in order to calculate the extent of particular noise levels around the airport. This will assume average weather conditions. These noise “contours” can then be placed on a map to see which communities are subjected to different degrees of average noise levels. But it should be remembered that, as average conditions rarely occur, the noise contours are only indicative of typical noise impact.

Noise management measures

reduction of aeroplane noise at source
land-use planning and management measures
noise abatement operational procedures
operating restrictions
establishing a technical partnership between airport air traffic control, aircraft operators and the airport operator to jointly progress aircraft noise management
depicting preferred noise routes on a map that avoid residential areas as far as possible, monitoring track adherence accuracy and seeking to improve track-keeping
avoiding over-flying sensitive sites such as hospitals and schools
ensuring that the optimum runway(s) and routes are used as far as conditions allow
using continuous descent approaches and departure noise abatement techniques
avoiding unnecessary use of auxiliary power units by aircraft on-stand
building barriers and engine test-pens to contain and deflect noise
towing aircraft instead of using jet engines to taxi
limiting night operations
limiting the number of operations or the extent of a critical noise contour
providing noise insulation for the most severely affected houses
applying different operational charges based on the noisiness of the aircraft
monitoring individual noise levels and penalising any breach

References

reference 1

Definition

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Noise emissions

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