GB/T 34412-2017Statistical method for surface standard climate normals (English PDF)
地面标准气候值统计方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 29, 2017
Implementation date
April 1, 2018
Scope
GB/T 34412-2017 is the English-translated version of 地面标准气候值统计方法.
GB/T 34412-2017 is the Chinese standard "Statistical method for surface standard climate normals". Its scope clause reads: This standard specifies the statistical method of terrestrial standard climate values.
This standard applies to the standard ground-based climate statistics, but also applies to the climatic values, temporary climate statistics. Its clauses include terms and definitions; basic data.
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Document preview — GB/T 34412-2017
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- A 47
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 basic data
- 4.1 effective data volume
- 4.2 data quality control and uniform processing
- 4.3 Auxiliary Information
- 5 statistical period
- 6 statistical items and accuracy
- 7 Statistical Methods
- 7.1 calendar year statistics
- 7.2 Yearly statistics
- 7.3 extreme year
- 7.4 statistical data that characterize the distribution of the data
- 7.5 Special handling
- Appendix A (Informative) Ground Standard Climatic Reference Statistics Item
- References
1 Scope
This standard specifies the statistical method of terrestrial standard climate values.
This standard applies to the standard ground-based climate statistics, but also applies to the climatic values, temporary climate statistics.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
QX/T 62 Specification for surface meteorological observatories Part 18. Preparation of meteorological records and reporting on the moon
QX/T 64 Specification for Surface Meteorological Observations Part 20. Preparation of surface meteorological data and reporting
QX/T 65 Specification for Surface Meteorological Observations Part 21. Statistics of missing records and incomplete records
QX/T 118 Ground meteorological observation data quality control
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Statistics annualized
Statistics based on historical observations and statistical data, including multi-year average, extreme values, etc.
3.2 Climatenormals
Include at least 30 consecutive years of meteorological elements of the cumulative annual statistics.
3.3 Standard climate value
Meteorological element statistics of the 30-year period set by the World Meteorological Organization.
Note. 30 years usually refer to 1901-1930, 1931-1960, 1961-1990.
3.4 Temporary climatic values
If it does not meet the statistical requirements of standard or climatic values, the meteorological element will last for 10 years and 10 years or more in that period
Statistics.
4 basic data
4.1 Effective data volume
4.1.1 Standard climate values
During the 30-year period stipulated by WMO, the annual (monthly, ten-day, day-of-day) statistics of standard climate values should meet the effective data volume.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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