GB/T 33673-2017
ActiveGrade of horizontal visibility
水平能见度等级
Application Summary AI generated
GB/T 33673-2017 defines the classification and grading criteria for horizontal visibility, specifying measurement methods and grade thresholds based on meteorological observation data. It is primarily applied in weather forecasting, aviation safety, maritime navigation, and highway traffic management to assess atmospheric transparency and guide operational decisions during fog, haze, or dust events. The standard ensures consistent visibility reporting across China's meteorological stations and related industries.
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