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TEMPORAL FLUCTUATION OF ATMOSPHERIC ABSORPTION OF SOUND AND ITS EFFECT ON AIRCRAFT NOISE PROPAGATION DURING A YEAR

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Academic year: 2018

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Figure

Fig.1.  Air temperature, relative humidity and calculated attenuation coefficients for atmospheric absorption at octave band center frequencies form 63Hz to 8kHz during a year
Fig.2. Calculated A-weighted sound pressure levels of noisegenerated from an aircraft flying near the ground at horizontal distances from 100m to 3200m
Figure 5 shows the vertical profiles of air temperature, relative humidity, atmospheric pressure and calculated attenuation coefficients
Fig. 6.  Air temperature, relative humidity and calculated attenuation coefficients for atmospheric absorption during a year
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