GB/T 35224-2017Specifications for surface meteorological observation—Weather phenomena (English PDF)
地面气象观测规范 天气现象
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
July 1, 2018
Scope
GB/T 35224-2017 is the English-translated version of 地面气象观测规范 天气现象.
GB/T 35224-2017 is the weather phenomena part of the specifications for surface meteorological observation.
Clause 1 states that it specifies the technical requirements and the observational methods for observing weather phenomena in surface meteorological observation, and that it applies to the ground observation of weather phenomena by artificial observation; no exclusions are given.
The foreword places it fourth in a series of seventeen standards on surface meteorological observation, which runs from GB/T 35221 on general rules through cloud, meteorological visibility, weather phenomena, atmospheric pressure, air temperature and humidity, wind direction and wind speed, precipitation, snow depth and snow pressure, evaporation, radiation, sunshine, ground temperature, frozen soil, wire ice and ground conditions to GB/T 35237 on automatic observation.
Clause 3 takes the definitions of GB/T 35221 and GB/T 35223 and adds three of its own: the weather phenomenon, described as a physical phenomenon that occurs under certain weather conditions in the atmosphere, as precipitation on the ground, as the condensation or freezing of water vapour, as a visual barrier, or as lightning, light or wind; the ground condensation phenomenon, which is the condensation of water vapour on the ground or on objects; and the visibility obstacle phenomenon, whose intensity is directly related to weather visibility.
Clause 4 divides the weather into thirty-four kinds and groups them into precipitation, the condensation and freezing of water vapour, atmospheric dust phenomena such as smoke screen, haze, blowing sand, dust and sandstorm, wind phenomena such as gale, tornado and dust tornado, thunder, electricity and light phenomena such as thunderstorm, lightning and aurora, and other phenomena.
Clause 2 cites GB/T 35221 and GB/T 35223. Clause 4 prints all six groups of the thirty-four kinds, though two of the phenomenon names are left in the draft as Chinese characters. It was issued on 29 December 2017 and has applied since 1 July 2018.
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Document preview — GB/T 35224-2017
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
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Categories
Foreword
The "Ground Meteorological Observations" series of standards include the following 17 standards.
--- GB/T 35221 General rules of ground meteorological observation;
--- GB/T 35222 standard meteorological observation cloud;
--- GB/T 35223 standard meteorological observation meteorological visibility;
--- GB/T 35224 meteorological observation standard weather phenomenon;
--- GB/T 35225 atmospheric meteorological observation standard pressure;
--- GB/T 35226 meteorological observation standard air temperature and humidity;
--- GB/T 35227 meteorological observation standard wind direction and wind speed;
--- GB/T 35228 standard meteorological observation of precipitation;
--- GB/T 35229 specifications for surface weather observation snow depth and snow pressure;
--- GB/T 35230 ground meteorological observation norms evaporation;
--- GB/T 35231 standard meteorological observation of radiation;
--- GB/T 35232 meteorological observation standard sunshine;
--- GB/T 35233 ground meteorological observation standard ground temperature;
--- GB/T 35234 ground meteorological observation standard frozen soil;
--- GB/T 35235 ground meteorological observation norms wire ice;
--- GB/T 35236 ground meteorological observation standard ground conditions;
--- GB/T 35237 automatic observation of ground meteorological observation norms.
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the technical requirements and observational methods for the observation of weather phenomena in surface meteorological observations.
This standard applies to the ground observation of weather phenomena in the artificial observation.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 35221 General Rules for Surface Weather Observation
GB/T 35223 meteorological observation standard weather visibility
3 Terms and definitions
GB/T 35221, GB/T 35223 and defined by the following terms and definitions apply to this document.
3.1 Weather phenomenon
Under certain weather conditions, it occurs in the atmosphere, precipitation on the ground, water vapor condensation (China), water vapor freeze, visual barrier, lightning, light, Wind and other physical phenomena.
3.2 Ground condensation phenomena
On the ground or objects on the water vapor condensation (Hua) weather phenomenon.
3.3 Visibility disorders
Weather phenomena that affect weather visibility and whose intensity is directly related to weather visibility.
4 Categories
The weather is divided into the following 34 species.
Rainfall, shower, drizzle, snow, snow shower, sleet, snow shower, graupel, snow, ice, hail
--- Water vapor condensation (China) and the phenomenon of freezing fog, light fog, dew, frost, fog, ice needle, icing, rain;
--- Atmospheric dust phenomenon. Smoke screen, haze, blowing sand, dust, sandstorm;
--- Wind phenomenon. Gale, tornado, dust tornado;
--- Thunder, electricity, light phenomenon. Thunderstorm, lightning, aurora
--- Other phenomena. Snow, snow blowing, snow storm.
......
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
Normative references
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Related Standards
GB/T 35221-2017 — Specifications for surface meteorological observation—General
GB/T 35223-2017 — Specifications for surface meteorological observation—Meteorological visibility
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