GB/T 35230-2017Specifications for surface meteorological observation—Evaporation (English PDF)
地面气象观测规范 蒸发
This is a limited preview
Buy now to download the full PDF (15 pages)
Need quotation for your management?
Get a formal quotation for GB/T 35230-2017 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
July 1, 2018
Scope
GB/T 35230-2017 is the English-translated version of 地面气象观测规范 蒸发.
GB/T 35230-2017 fixes how evaporation is observed in surface meteorological observation. Clause 1 states that the standard specifies the technical requirements and the observational methods for observing evaporation in surface meteorological observation, and that it applies to the observation of evaporation in ground meteorological observation.
The general requirements clause lists the instruments used, large evaporators, small evaporators and evaporating cells, with the large and small evaporators detailed in two appendices, and it fixes where they go, the large evaporator in the west of the observation field, the small evaporator east of it and 4 m away, and the evaporating pool at least 50 m from the observatory, as well as the water to be used, preferably water representing the local natural water bodies, with drinking water such as well water or tap water allowed where natural water is hard to obtain.
The next clause, on the large evaporator, gives its construction, listing among its parts the evaporation barrel, an overflow bucket and a stylus, and then its installation, which is to disturb as little of the original soil layer as possible; the draft breaks off inside the installation subclause, so the rest of the body cannot be reported.
Clause 3 prints a single definition, for evaporation, as the amount of water of a given volume that passes from the liquid or solid state into vapour over a period of time, and clause 2 cites GB/T 35221 on the general rules for surface weather observation.
The foreword places the standard in a series of seventeen surface meteorological observation standards, numbered GB/T 35221 to GB/T 35237 and covering general rules, cloud, visibility, weather phenomena, pressure, air temperature and humidity, wind, precipitation, snow depth and snow pressure, this evaporation standard, radiation, sunshine, ground temperature, frozen soil, wire ice, ground conditions and automatic observation.
It records that the standard was proposed by the China Meteorological Administration and is handled by the National Meteorological Instruments and Methods of Standardization Technical Committee (SAC/TC507). It was issued on 29 December 2017 and has applied since 1 July 2018.
Found what you need?
Document preview — GB/T 35230-2017
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 General requirements
- 5 Large evaporator
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 observing evaporation in surface meteorological observations.
This standard applies to the observation of evaporation in the ground meteorological 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
3 Terms and definitions
GB/T 35221 and defined by the following terms and definitions apply to this document.
3.1 Evaporation
In a certain period of time, a certain volume of water from the liquid or solid into a vapor amount.
4 General requirements
4.1 Determination of equipment
Apparatus for the determination of evaporation, including large evaporators (see annex A), small evaporators (see annex B) and evaporating cells.
4.2 Equipment installation site
Large evaporator installed in the observation field west, small evaporator should be installed in the east of the large evaporator, the two separated by 4m, evaporation Pool installation should be at least 50m away from the observatory.
4.3 Evaporation of water
It is advisable to use water that represents the natural water bodies (rivers, lakes and rivers) of the local area. Drinking water (well water, tap water) is available in areas where natural water is difficult.
5 Large evaporator
5.1 Construction
Large evaporator by the evaporation barrel, hydrosphere, overflow bucket and stylus composition, see Appendix A structure.
5.2 Installation
5.2.1 Evaporation barrel
Large evaporator installed in the observation field, installation, strive to dig less original soil layer. The method and the steps are as follows. […]
......
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
Similar standards
How to Download GB/T 35230-2017
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 35221-2017 — Specifications for surface meteorological observation—General
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
Secure payment via Stripe
Payments accepted
GB/T 35230-2017
$205.00