The noise impact from aircraft landing and taking off is calculated using the so-called TDENL (Total Day-Evening-Night Level) method. This method is used to continuously monitor changes in the noise impact from air traffic at Copenhagen Airport.
In the environmental approval granted to Copenhagen Airport, the environmental authorities set a limit for noise exposure, which may not exceed a TDENL value of 147.4 (with a tolerance of 1 dB).
The airport’s TDENL was determined to be 145.6 dB in 2009.
TDENL values and number of passengers for the years 1996-2009.
The noise exposure has fallen by 6 dB since 1996. This reduction is primarily achieved through the phase-out of a number of noisy aircraft types that was finally completed in 2002. Concurrently with the reduction in noise impact, there has been a substantial increase in the number of passengers since 1996.
This should be seen in light of a decline in traffic volume in terms of number of flight operations since 2000. That the number of passengers increased despite a lower number of flights is due to higher load factors and a larger number of flights with large aircraft.
- More passengers
- Fewer flight operations
- Lower noise impact