|
US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 21984-2017: Short-range weather forecast
Status: Valid GB/T 21984: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21984-2017 | English | 279 |
Add to Cart
|
3 days [Need to translate]
|
Short-range weather forecast
| Valid |
GB/T 21984-2017
|
| GB/T 21984-2008 | English | 479 |
Add to Cart
|
3 days [Need to translate]
|
Short-range weather forecast
| Obsolete |
GB/T 21984-2008
|
PDF similar to GB/T 21984-2017
Basic data | Standard ID | GB/T 21984-2017 (GB/T21984-2017) | | Description (Translated English) | Short-range weather forecast | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A47 | | Classification of International Standard | 07.060 | | Word Count Estimation | 14,197 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-04-01 | | Older Standard (superseded by this standard) | GB/T 21984-2008 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic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 21984-2017: Short-range weather forecast---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.
Short-range weather forecast
ICS 07.060
A47
National Standards of People's Republic of China
Replacing GB/T 21984-2008
Short-term weather forecast
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
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 21984-2008 "short-term weather forecast." Compared with GB/T 21984-2008, in addition to editorial changes outside the main
The technical changes are as follows.
--- Removed "total cloud amount" "total cloud level" "weather meeting" "numerical weather forecast" and other terms and definitions (2008 version 2.7,
2.8, 2.19 and 2.21);
--- Increase the "average temperature" "cloud amount" "cloud base height" "air pressure" "forecast time resolution" terms and definitions (see 2.5, 2.8,
2.9, 2.20 and 2.22);
--- Modify the "visibility" terms and definitions (see 2.19,.2008 version 2.18);
--- Modify the forecast elements of the short-term weather forecast and forecast time resolution content (see 3.2 and 3.3,.2008 edition 3.2 and
3.3);
--- Removed the forecast production and short-term weather forecast release content (2008 edition Chapter 4 and Chapter 5);
--- Modify the normative Appendix B "sky condition terms and cloud amount comparison table" (2008 edition of normative Appendix B "cloud division
table");
--- Modify the information appendix C "Wind direction diagram" (2008 version of Figure 1 wind direction diagram shows the method);
--- Added information Appendix D "wind direction and degree table";
--- Modify the informative Appendix E "Precipitation classification table" (2008 edition of the appendix C "Precipitation classification table").
This standard is proposed by China Meteorological Administration.
This standard by the National Meteorological Disaster Prevention and Mitigation Standardization Technical Committee (SAC/TC345) centralized.
This standard was drafted by Hainan Provincial Meteorological Bureau and National Meteorological Center.
The main drafters of this standard. Xinji Wu, Sun Jun, Xu Xiangchun, Hao Liqing, Wang Xidong, Guo Dongyan, Chen Youlong.
This standard replaces the standards previously issued as.
--- GB/T 21984-2008.
Introduction
Short-term weather forecast is forecasters based on past and present atmospheric conditions, the use of modern forecasting techniques and methods, the use of weather science,
Weather dynamics, statistics and other knowledge of the future 0h ~ 72h of a region of the atmospheric state and the possible impact of forecasting and release.
GB/T 21984-2008 Since the implementation of the "short-term weather forecast", it has played an important role in regulating and guiding the national short-term weather forecasting business
effect. In order to meet the development needs of short-term weather forecast in our country, GB/T 21984-2008 is revised. This revision mainly increased or decreased
Some definitions and terms, revised forecast elements of short-term weather forecasting and forecast time resolution content, add some informative appendix.
Short-term weather forecast
1 Scope
This standard specifies the terms and definitions of short-term weather forecasting, forecast aging, forecast elements and forecast time resolution.
This standard applies to the production and use of short-term weather forecasts.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Pre-estimation and forecast of weather changes in a certain area or place in the next 72 hours.
2.2
Sky condition skycondition
The amount of clouds in the sky, the properties of clouds, the height of clouds and other atmospheric conditions.
2.3
Weatherphenomenon
Occurred in the atmosphere, some of the physical phenomena on the ground. It includes precipitation phenomenon, ground condensation phenomenon, visual obstacle phenomenon, lightning phenomenon
And other phenomena.
[QX/T 48-2007, Definition 3.1]
2.4
Temperature airtemperature
The degree of air hot and cold physical quantity.
Note. The standard temperature is in a standard environment in the veranda from the ground about 1.5m high temperature measuring instrument measured air temperature, in degrees Celsius
(℃), take a decimal place, below 0 ℃ is negative.
2.5
Average temperature meanairtemperature
The average temperature over a period of time. The unit is degrees Celsius (℃).
2.6
The maximum temperature maximumairtemperature
The maximum temperature of a certain period of time. The unit is degrees Celsius (℃).
2.7
Lowest temperature minimumairtemperature
The minimum temperature of a certain period of time. The unit is degrees Celsius (℃).
2.8
Cloud cover cloudcover
The clouds cover the sky into the number.
2.9
Cloud base height cloudbaseheight
The vertical distance from the cloud base to the ground of the station. The unit is meters (m).
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21984-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 21984-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 21984-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 21984-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 21984-2017?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21984-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|