Data indicating the level of noise according to the strategic noise mapping of major road sources within areas with a population of at least 250,000 people (agglomerations) and along major traffic routes with more than 6,000,000 vehicle passages per year. Lden indicates a 24 hour annual average noise level with separate weightings for the evening and night periods. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

Data indicating the level of noise according to the strategic noise mapping of all rail sources within areas with a population of at least 250,000 people (agglomerations). Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

Data indicating the level of noise according to the strategic noise mapping of all road sources within areas with a population of at least 100,000 people (agglomerations). Lden indicates a 24 hour annual average noise level with separate weightings for the evening and night periods. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

Data indicating the level of noise according to the strategic noise mapping of all rail sources within areas with a population of at least 100,000 people (agglomerations). Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

Notifications concerning marine casualties and marine incidents occurring in the Portuguese territorial waters and in internal waters and with Portuguese flaged vessels in any part of the world.

Data indicating the level of noise according to the strategic noise mapping of consolidated sources (roads, railways, airports and industry) within areas with a population of at least 250,000 people (agglomerations). Lden indicates a 24 hour annual average noise level with separate weightings for the evening and night periods. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

Data indicating the level of noise according to the strategic noise mapping of all railway sources within areas with a population of at least 100,000 people (agglomerations). Lden indicates a 24 hour annual average noise level with separate weightings for the evening and night periods. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

Areas considered to be urban (with a population greater than or equal to 100,000 people) where, under the Environmental Noise Directive (Round 2), Strategic Noise Mapping has been carried out. This data includes a 2km buffer.

Data indicating the level of noise according to the strategic noise mapping of industrial sources within areas with a population of at least 250,000 people (agglomerations). Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).

Data indicating the level of noise according to the strategic noise mapping of all road sources within areas with a population of at least 100,000 people (agglomerations). Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. This data is a product of the strategic noise mapping analysis undertaken to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC).