Benefits of monthly noise mapping compared to annual assessments - an analysis of Dublin Airport

This paper explores the impact of wind patterns and aircraft operations on noise exposure at Dublin Airport, investigating monthly variations in noise levels and their implications for surrounding communities. While annual noise maps are mandated under END 2002/49/EC, they cannot capture the fluctuations in noise levels resulting from changes in flight numbers and weather conditions. The study provides a detailed analysis of weather patterns, wind influences, runway closures, and population exposure. Findings reveal significant fluctuations in noise exposure, with Westerly operations varying between throughout 2023, leading to area exposures ranging from to for noise levels exceeding . A grid mapping approach was utilized to illustrate these variations, highlighting the temporal changes in noise impact across different months. The comparison of monthly area exposures shows fluctuations of up to of a given area exposure within the contour. This underscores the need for both monthly and annual noise maps, which provide precise and actionable insights into seasonal noise fluctuations. These maps enable data-driven communication strategies, inform placement of noise monitoring networks and facilitate effective community engagement. • Monthly noise maps reveal significant fluctuations in change of area exposure, up to . • Annual noise maps are insufficient for assessing aircraft noise; monthly maps are essential. • Tailored communication strategies and noise mitigation efforts can improve public acceptance. • Monthly noise maps highlight population exposure variations, aiding noise monitor placement and targeted communication.