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GB/T 40039-2021: Validation of soil moisture remote sensing products
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Validation of soil moisture remote sensing products
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GB/T 40039-2021
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Basic data | Standard ID | GB/T 40039-2021 (GB/T40039-2021) | | Description (Translated English) | Validation of soil moisture remote sensing products | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A77 | | Word Count Estimation | 10,190 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 40039-2021: Validation of soil moisture remote sensing products---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.
Validation of soil moisture remote sensing products
ICS 07.040
A77
National Standards of People's Republic of China
Verification of the authenticity of soil moisture remote sensing products
Released on 2021-04-30
2021-11-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
Introduction Ⅱ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Basic requirements 1
5 Inspection method 2
5.1 Inspection method selection 2
5.2 Direct inspection method 2
5.2.1 Overview 2
5.2.2 Verification area selection 2
5.2.3 Sample selection 3
5.2.4 Ground data synchronization measurement 3
5.2.5 Determine the relative true value of pixel scale 3
5.2.6 Accuracy Evaluation 3
5.2.7 Uncertainty analysis 3
5.3 Indirect inspection method 3
6 Inspection report 4
6.1 Cover information 4
6.2 Body information 5
6.2.1 Overview of soil moisture remote sensing products to be tested 5
6.2.2 Reference object description 5
6.2.3 Inspection methods and procedures 5
6.2.4 Authenticity inspection conclusion 5
6.2.5 Additional information 5
6.3 Summary of inspection report information 5
Appendix A (Normative Appendix) Soil Moisture Measurement Method --- Ring Knife Method 6
Reference 7
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Chinese Academy of Sciences.
This standard is under the jurisdiction of the National Standardization Technical Committee of Remote Sensing Technology (SAC/TC327).
Drafting organizations of this standard. Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences, Beijing Normal University, Chinese Academy of Sciences Aerospace Information Innovation
Research Institute, National Satellite Meteorological Center, Institute of Tibetan Plateau Research, Chinese Academy of Sciences.
The main drafters of this standard. Jin Rui, Kang Jian, Ma Chunfeng, Zhu Zhongli, Ran Youhua, Zhao Tianjie, Wu Shengli, Li Xin, Liu Zhaoyan.
Introduction
Soil moisture is one of the core variables of the global climate system, and it plays an important role in the energy and water balance of the surface and the atmosphere. Soil Moisture
It directly determines the ratio of precipitation into evapotranspiration, infiltration and runoff, which is the basic variable in the process of formation, transformation and consumption of land water resources. this
In addition, soil moisture is also the basic material condition for vegetation growth, which affects the rate of vegetation photosynthesis and soil microbial respiration. Remote Sensing of Soil Moisture
The product has become an indispensable key parameter in the fields of climate, meteorology, hydrology, ecology and agriculture.
The authenticity test of soil moisture remote sensing products is a basic method to independently evaluate the accuracy and uncertainty of soil moisture remote sensing products. but
At present, there are still no standards to rely on for the objective evaluation and quantitative inspection of the quality of soil moisture remote sensing products. Therefore, it is necessary to form a set of reasonable and regular
Fan, feasible inspection standards for the authenticity of soil moisture remote sensing products to ensure the quality and consistency of soil moisture remote sensing products in related research and application
Consistency.
Verification of the authenticity of soil moisture remote sensing products
1 Scope
This standard specifies the basic requirements, inspection methods and inspection reports for the authenticity inspection of soil moisture remote sensing products.
This standard applies to the authenticity inspection of soil moisture remote sensing products at global and regional scales.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 28418-2012 Basic technical conditions of soil moisture (moisture) monitoring instruments
GB/T 36296-2018 Guidelines for authenticity inspection of remote sensing products
GB/T 39468-2020 General method for authenticity inspection of land quantitative remote sensing products
3 Terms and definitions
GB/T 28418-2012, GB/T 36296-2018, GB/T 39468-2020 and the following terms and definitions apply to
This document.
3.1
Soilmoisture
Adsorbed to soil particles and water present in soil pores.
Note. Mainly liquid water, a few are solid ice frozen in cold seasons and gaseous water in the form of water vapor.
3.2
Soil volumetric water content volumetricsoilmoisture
The volume of liquid water per unit volume of soil.
Note. The unit is cubic centimeter per cubic centimeter (cm3/cm3).
3.3
Gravimetricsoilmoisture
Soil quality water content
The ratio of the mass of liquid water held in the soil to the mass of dry soil.
Note. The unit is gram per gram (g/g).
3.4
Soil bulk density
The mass of dry soil per unit volume of undisturbed soil.
Note. The unit is grams per cubic centimeter (g/cm3).
4 Basic requirements
The authenticity inspection of soil moisture remote sensing products should meet the requirements of Chapter 7 in GB/T 36296-2018 and meet the following requirements.
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