GB/T 33669-2017 English PDF

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GB/T 33669-2017: Monitoring indices of precipitation extremes
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33669-2017	139	Add to Cart	3 days	Monitoring indices of precipitation extremes	Valid

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Basic data

Standard ID: GB/T 33669-2017 (GB/T33669-2017)
Description (Translated English): Monitoring indices of precipitation extremes
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A47
Classification of International Standard: 07.060
Word Count Estimation: 7,728
Date of Issue: 2017-05-12
Date of Implementation: 2017-12-01
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
Summary: This standard specifies the extreme monitoring index of single station precipitation and its calculation method. This standard applies to extreme precipitation monitoring, assessment and service work.

GB/T 33669-2017: Monitoring indices of precipitation 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 precipitation extremes ICS 07.060 A47 National Standards of People's Republic of China Extreme precipitation monitoring 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III 1 Scope 1

2 terms and definitions

Monitoring Indicators 2 4 data and calculation method 2 Appendix A (normative) Generalized Extreme Value Distribution (GEV) Method 3 Reference 4

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the China Meteorological Administration. This standard is nationalized by the National Climate and Climate Change Standardization Technical Committee (SAC/TC540). The drafting of this standard. National Climate Center. The main drafters of this standard. Zou Xukai, Gao Rong, Wang Zunya, Chen Xianyan. Extreme precipitation monitoring

1 Scope

This standard specifies the extreme monitoring index of single station precipitation and its calculation method. This standard applies to extreme precipitation monitoring, assessment and service work.

2 terms and definitions

The following terms and definitions apply to this document. 2.1 Precipitation A period of time without evaporation, infiltration, loss of precipitation, the depth accumulated in the horizontal plane. 2.2 Climatological clim climst Used to calculate the meteorological elements of the multiples of the last three consecutive years. Example. The climate standard period used for the period from 1981 to.2010 for the year.2011-2020. 2.3 Percentile percentile Sort a set of data from small to large, and calculate the corresponding cumulative percentile, a certain percentage of the corresponding data is the percentage of this percentage The percentile. 2.4 Extreme threshold extremethresholdvalue A statistic reaches a critical value of extreme conditions. Extreme precipitation uses the 95th percentile as the extreme threshold. 2.5 Extreme extremum The maximum or minimum value of a statistic or monitoring indicator over a period of time. 2.6 Continuous precipitation Continuous precipitation (greater than or equal to 2 days) daily precipitation greater than or equal to 0.1mm phenomenon. 2.7 Continuous precipitation days consecutivedaysofprecipitation Daily precipitation is greater than or equal to 0.1mm continuous precipitation of the total number of days. 2.8 Continuous precipitation Accumulated Precipitation over a continuous precipitation day. 2.9 Return period The specific value of the statistics is repeated at the time interval to year. ......

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