GB/T 34293-2017 English PDF

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GB/T 34293-2017: Monitoring indices of low temperature extremes and temperature drop extremes
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Basic data

Standard ID: GB/T 34293-2017 (GB/T34293-2017)
Description (Translated English): Monitoring indices of low temperature extremes and temperature drop extremes
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A47
Word Count Estimation: 7,778
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 34293-2017: Monitoring indices of low temperature extremes and temperature drop extremes

---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.
Monitoring indices of low temperature extremes and temperature drop extremes ICS 07.060 A47 National Standards of People's Republic of China Extreme low temperature and cooling monitoring indicators 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 Directory Foreword Ⅲ 1 Scope 1 2 Terms and definitions 1 3 extreme low temperature and cooling monitoring indicators 2 4 data and calculation method 2 Appendix A (Normative) Generalized Extreme Value Distribution (GEV) method 3 Reference 4

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 Climate and Climate Change Technical Committee (SAC/TC540) centralized. This standard was drafted unit. National Climate Center. The main drafters of this standard. Wang Zunya, Zou Xu Kai, high-wing. Extreme low temperature and cooling monitoring indicators

1 Scope

This standard specifies the single station day extreme low temperature, extreme day cooling and extreme continuous cooling monitoring indicators and calculation methods. This standard applies to extreme low temperature and cooling monitoring, assessment and service work.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 Climate standard period climatenormalperiod The last 3 consecutive years used to calculate multi-year averages of meteorological elements. Examples are the climate standard periods used for 1981-2010 for.2011-2020. 2.2 Percentile percentile Sort a set of data from small to large, and calculate the corresponding cumulative percentile, the data corresponding to a percentile value is the percentile Of the percentile. 2.3 Extreme threshold extremethresholdvalue Some statistics reach the critical state of the critical value. 2.4 Extreme extremum Statistics for a period of time or monitoring indicators of the maximum or minimum. 2.5 Daily temperature dailytemperaturedrop The lowest day temperature is not higher than the previous day's phenomenon. Note. According to the provisions of QX/T 52-2007 and GB/T 21987-2008, the daily minimum temperature is the lowest one day's temperature, which is 14.00 the day before observation (Beijing Time, the same below) to the day the lowest temperature between 14.00. 2.6 Daily cooling rate amplitudeofdailytemperaturedrop The lowest day temperature is lower than the previous day's lowest temperature value. 2.7 Continuous cooling consecutivedailytemperaturedrop Continuous cooling on the phenomenon. 2.8 Continuous cooling rate amplitudeofconsecutivedailytemperaturedrop Continuous cooling period, the sum of the cooling rate. 2.9 Recurrence returnperiod The recurrence of statistical intervals for specific values of statistics, in years. ......

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