GB/T 34299-2017 English PDFUS$199.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 34299-2017: Grads of atmospheric self-purification capability Status: Valid
Basic dataStandard 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 ForewordThis 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.IntroductionWith 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 level1 ScopeThis 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 definitionsThe 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). ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 34299-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 34299-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 34299-2017_English with my colleagues?Answer: Yes. 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