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GB/T 34303-2017: Specifications of numerical weather predication products verification
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34303-2017 | English | 279 |
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Specifications of numerical weather predication products verification
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GB/T 34303-2017
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Basic data | Standard ID | GB/T 34303-2017 (GB/T34303-2017) | | Description (Translated English) | Specifications of numerical weather predication products verification | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A47 | | Classification of International Standard | 07.060 | | Word Count Estimation | 14,19 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-04-01 | | 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 | GB/T 34303-2017: Specifications of numerical weather predication products verification---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.
Specifications of numerical weather predication products verification
ICS 07.060
A47
National Standards of People's Republic of China
Numerical weather forecast product inspection specifications
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
Directory
Foreword Ⅲ
Introduction IV
1 Scope 1
2 Terms and definitions 1
3 symbol 1
4 numerical weather forecast product testing content 2
4.1 test elements and levels 2
4.2 test interval 2
4.3 test times 2
4.4 inspection area 2
4.5 inspection resolution 2
4.6 test live 2
4.7 test with the climate value 3
5 Numerical weather forecast product test formula 3
5.1 Continuous variable forecast test formula 3
5.2 classification forecast product testing formula 4
5.3 Collection and Probabilistic Testing Methods 6
References 8
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
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 unit. National Meteorological Center.
The main drafters of this standard. Wang Yu, Li Li, Li Yinglin.
Introduction
Modern weather forecasting is based on numerical weather forecasting. Numerical weather forecasting products, including set forecasting products, have been widely used in the meteorological sector
In weather forecasting, meteorological disaster risk forecasting and professional weather forecasting business, it has become an important factor affecting the accuracy of weather forecasting
Prime At the same time, numerical weather forecasting products are also increasingly being applied to related cross-industry (hydrology, environment, oceans, etc.). Therefore, built
Value numerical weather forecasting product inspection norms, scientific, objective and quantitative evaluation of numerical forecasting product quality, the effective application of the value of the industry both inside and outside
Weather forecast products provide a scientific basis, but also provide valuable information and history for the weather industry to improve and develop the numerical weather forecasting model
Trace back.
Numerical weather forecast product inspection specifications
1 Scope
This standard specifies the value of the weather forecasting products can be calculated quantitative test content and methods.
This standard applies to numerical weather forecasting product quality assessment.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Numerical weather forecast product numericalweatherpredictionproduct
Starting from the current state of the atmosphere obtained by the observation, with the help of modern electronic computers, the numerical method is used to solve the fluid that controls the movement of the atmosphere
Mechanical equations predict future changes in the weather. The performance of their products grid form, according to the forecast result is whether a dimension is true
Qualitative forecasting products and forecasting products.
2.2
Ensemblepredictionproduct
Aiming at the nonlinearity, initial value error and mode error of atmospheric motion, a numerical prediction method is proposed. By considering different error modes
The set of predictive samples provides an evolution of the probability density function of inferred atmospheric states over time and all possible states. Its products have a collection
Average, probability distribution and so on.
2.3
Deterministic forecasting product deterministicforecastproduct
Clearly give the only forecast result of a meteorological event or element. Divided into continuous variable forecasting products and forecasting products.
2.4
Forecasts of continuously variable forecasts
A weather variable with any small amount of physical quantity difference between adjacent points in space, such as height, temperature and wind forecast products.
2.5
Dichotomous (yes/no) forecast
Under certain threshold conditions a meteorological event occurs or does not occur in the forecast product. Such as a clear forecast of precipitation, high temperature, large
Wind and so on.
2.6
Probabilisticforecast
Given a weather phenomenon or a weather variable to reach the set threshold probability of forecasting products, the value is generally between 0 ~ 1.
3 symbol
The following symbols apply to this document.
Ci The average of the ith sample or grid climate corresponding to the model forecast
Fi mode The prediction value of the ith sample or grid
The average of the F mode forecast field
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