Weather conditions influence noise levels, especially over long distances, and need to be considered when taking acoustic measurements. In Québec, the Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP) has established criteria for weather conditions that must be met in such situations. The criteria are set out in Note d’instructions [guidance note] 98-01.
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