Noise in agglomerations - IED installations - Level grid LDEN - Mapping 2022

The data include the calculation results of the 2022 environmental noise mapping in the agglomerations in Bavaria. These are all cities in Bavaria with more than 100,000 inhabitants, i.e. Munich, Nuremberg, Augsburg, Fürth, Erlangen, Würzburg, Regensburg and Ingolstadt. In each agglomeration, noise was recorded by road traffic, industrial and commercial installations in accordance with Directive 2010/75/EU of 24 November 2010 on integrated pollution prevention and control (Industrial Emissions Directive - IED Directive) and, where available, by tram and above-ground metro transport. The noise calculations are carried out in accordance with the "Calculation method for ambient noise from ground-level sources (roads, railways, industry and commerce) (BUB)".
The noise indices LDEN and LNight in dB(A) are used as a measure of general annoyance or as a measure of sleep disturbances. The LDEN level is an emission level averaged over 24 hours, which is determined from the LDay, LEvening and LNight levels for the assessment times day (6:00-18:00), evening (18:00-22:00) and night (22:00-6:00). Weight factors of 5 dB(A) for the four-hour evening time and 10 dB(A) for the eight-hour night time take into account the increased sensitivity to noise during these times.
The layer describes the noise pollution from industrial plants in the agglomeration expressed by the noise index LDEN according to the EC Environmental Noise Directive. According to the Directive, only IED installations are considered.

本数据集包含巴伐利亚州（Bavaria）2022年城市群环境噪声制图的计算结果。涉及的城市群均为巴伐利亚州人口超10万的城市，即慕尼黑、纽伦堡、奥格斯堡、菲尔特、埃尔朗根、维尔茨堡、雷根斯堡及因戈尔施塔特。本次噪声监测依据2010年11月24日发布的《关于综合污染预防与控制的2010/75/EU指令》（工业排放指令，即IED指令），对各城市群的道路交通、工商业设施噪声进行采集；若条件允许，同时纳入有轨电车及地面地铁交通的噪声数据。本次噪声计算严格遵循《地面源（道路、铁路、工商业）环境噪声计算方法（BUB）》执行。
本数据集采用dB(A)计量的噪声指数LDEN与LNight，分别作为通用噪声烦扰度与睡眠干扰程度的评估指标。其中LDEN为24小时平均排放水平，由日间（6:00-18:00）、傍晚（18:00-22:00）及夜间（22:00-6:00）三个评估时段的LDay、LEvening与LNight指数加权计算得出；4小时傍晚时段的加权系数为5 dB(A)，8小时夜间时段的加权系数为10 dB(A)，以此体现该时段内人体对噪声的敏感度提升。
本图层依据欧盟环境噪声指令（EC Environmental Noise Directive），以噪声指数LDEN表征城市群内工业设施的噪声污染情况；根据该指令要求，仅纳入IED指令覆盖的工商业设施。