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GB/T 34299-2017: Grads of atmospheric self-purification capability
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34299-2017 | English | 199 |
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Grads of atmospheric self-purification capability
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GB/T 34299-2017
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Basic data | Standard ID | GB/T 34299-2017 (GB/T34299-2017) | | Description (Translated English) | Grads of atmospheric self-purification capability | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A47 | | Classification of International Standard | 07.060 | | Word Count Estimation | 10,121 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-04-01 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 34299-2017: Grads of atmospheric self-purification capability---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Grads of atmospheric self-purification capability
ICS 07.060
A47
National Standards of People's Republic of China
Atmospheric self-purification ability level
2017-09-07 Posted
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by China Meteorological Administration.
This standard by the National Meteorological Disaster Prevention and Mitigation Standardization Technical Committee (SAC/TC345) centralized.
This standard was drafted unit. National Climate Center, National Meteorological Center, Environmental Protection Department of Environmental Engineering Assessment Center.
The main drafters of this standard. Zhao Shanshan, Zhu Rong, Zhang Hengde, Li Shibei, singing, Li Sa, Zhang Bihui.
Introduction
With the rapid development of global social economy and industrialization, the dramatic increase in population has brought unprecedented pressure on the atmosphere
They are increasingly aware of the importance and urgency of protecting the atmosphere upon which mankind depends. Different weather conditions, the same pollution source row
The concentration of atmospheric pollutants caused by the release varies widely. Diffusion and dilution of air pollutants vary with weather conditions.
The problem of air pollution has significant regional and timeliness. The atmospheric carrying capacity of pollutants depends on a variety of factors, such as ventilation and leanness
Release, turbulent diffusion, wet removal and other physical processes, as well as photochemical and other atmospheric pollutants in the chemical process. This standard considers the proliferation of ventilation and wet clearance
Of the common role of the use of atmospheric environmental capacity coefficient value of the air self-purification capacity for evaluation, and to determine the level of atmospheric self-purification standards.
Atmospheric self-purification ability level
1 Scope
This standard specifies the level of self-purification capacity of the atmosphere and calculation methods.
This standard applies to the evaluation of meteorological conditions of air pollution and public services.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Atmospheric stability atmosphericstability
Atmospheric vertical motion determined by the vertical distribution of atmospheric temperature and humidity in the near strata.
Note. The unit is dimensionless.
2.2
Atmospheric boundary layer atmosphericboundarylayer
The bottom of the atmosphere near the surface of the Earth affected by ground motivation, heat and material exchange.
2.3
Heat mixing layer depth depthofthemodynamicmixedlayer
Due to the ground heating trigger convective thermal bubble, resulting in instability of the atmospheric boundary layer, it has a strong vertical mixing of the formation of heat
Co-thickness.
Note. The unit is meters (m).
2.4
Mechanical mixing layer height depthofmechanicalmixedlayer
Thickness of a stable or neutral atmospheric boundary layer dominated by mechanical turbulence exchange.
Note. The unit is meters (m).
2.5
Total cloud amount totalcloudamount
The sky is obscured by all clouds when viewing.
Note. The total cloud measurement using a very system, remember integer.
2.6
Low cloudiness lowcloudamount
The sky is shaded by the cloud of low clouds.
Note. The measurement of low cloud volume using ten system, remember integer.
2.7
Ventilation dilution dilutionbytilation
Dilution of atmospheric pollutant concentration by air advection in the atmospheric boundary layer.
2.8
Ventilation ventilationability
Throughout the mixed layer, the unit of time through the cross-wind unit width of the total amount of air.
Note. The unit is square meter per second (m2/s).
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