GB/T 33673-2017 in English
VALIDGrade of horizontal visibility
- Issued on:2017-05-12
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$78.00
《GB/T 33673-2017水平能见度等级》由TC345（全国气象防灾减灾标准化技术委员会）归口，主管部门为中国气象局。
Introduction
National Standard of the People's Republic of China GB/T 33673—2017 Interpretation of Horizontal Visibility Levels
Background and Significance of Standard Formulation
Horizontal visibility is an important indicator in meteorological observation, which directly affects the safe operation of transportation, aviation, navigation and other fields. The formulation of GB/T 33673—2017 fills the gap in the classification of horizontal visibility levels in China and provides a unified technical basis for relevant departments.
Comparative Analysis of Standard Frameworks
| Dimensions | This Standard | References | International Integration |
|---|---|---|---|
| Grade Division | Grade 1-6, covering the visibility range from excellent to extremely poor | Consistent with GB/T27964-2011 and other standards | In line with the WMO international standard system |
| Scope of Application | Applicable to meteorological monitoring, forecasting and service fields | Covering ground observation and high-altitude meteorological detection | Compatible with the requirements of the International Civil Aviation Organization (ICAO) |
| Term Definition | Clear scientific definition and comparison threshold of horizontal visibility | Consistent with atmospheric science dictionary | Compatible with international meteorological terminology standards |
Technology Evolution Analysis
From a historical perspective, the monitoring technology of horizontal visibility has experienced a transition from visual observation to automated observation. This standard absorbs international advanced experience and proposes a more scientific and refined grading method based on domestic actual conditions.
Actual Application Cases
For example, in the monitoring of meteorological conditions on highways, the visibility level directly determines whether traffic control measures need to be initiated. Through the real-time observation data of the forward scatter visibility meter, combined with the grading of this standard, the level of road safety management can be effectively improved.
Implementation Suggestions
- Monitoring network construction: Install standard visibility meters at transportation hubs, key roads and airport surrounding areas.
- Forecast model optimization: Combine numerical weather forecast systems to improve the accuracy of visibility trend forecasts.
- Information service upgrade: Establish a multi-channel information release mechanism based on this standard to ensure that relevant departments and the public can obtain visibility level information in a timely manner.
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