GB/T 34302-2017 in English
VALIDWarning level for surface ozone
- Issued on:2017-09-07
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 34302-2017地面臭氧预警等级》由TC540（全国气候与气候变化标准化技术委员会）归口，TC540SC1（全国气候与气候变化标准化技术委员会大气成分观测预报预警服务分会）执行，主管部门为中国气象局。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 34302-2017
I. Background and Significance of Standard Formulation
Ground-level ozone is one of the main air pollutants, and its increased concentration will have a serious impact on human health and the ecosystem. The formulation of GB/T 34302-2017 aims to predict ozone pollution events in advance through scientific and reasonable early warning level classification, and provide effective protection basis for the government and the public.
II. Comparative Analysis of Standard Frameworks
| Dimensions | Domestic Standards | International Standards | Regional Differences |
|---|---|---|---|
| Warning Level Division | Yellow, Orange and Red Warnings | No unified standard, local regulations adopted | Some provinces and cities have detailed indicators |
| Monitoring Period | 8-hour average and 1-hour average | Mostly real-time monitoring and rolling average | Higher accuracy in developed eastern regions |
| Warning Threshold | Varies from 215 to 800 µg/m³ | International standards are generally lower | There are significant differences in different climate zones |
III. Recommendations for standard implementation and analysis of technological evolution
Case study: Taking Shanghai as an example, a real-time early warning system based on ozone concentration monitoring stations was established in combination with the AQI (ambient air quality index) technical specification (HJ633-2012). The effectiveness of GB/T 34302-2017 was verified by comparing and analyzing historical data through the AQI calculator.
Implementation recommendations:
- Improve the regional joint defense mechanism
- Promote advanced ozone monitors
- Strengthen public science education
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