GB/T 40033-2021 English PDFUS$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 40033-2021: Validation of land surface evapotranspiration remote sensing products Status: Valid
Basic dataStandard ID: GB/T 40033-2021 (GB/T40033-2021)Description (Translated English): Validation of land surface evapotranspiration remote sensing products Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: A77 Word Count Estimation: 15,190 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 40033-2021: Validation of land surface evapotranspiration 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 land surface evapotranspiration remote sensing products ICS 07.040 A77 National Standards of People's Republic of China Verification of the authenticity of remote sensing products for surface evapotranspiration 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 contentsForeword Ⅰ Introduction Ⅱ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Basic requirements 1 5 Inspection method 1 5.1 Inspection method selection 1 5.2 Direct inspection method 2 5.3 Indirect inspection method 3 6 Inspection report 5 6.1 Cover information 5 6.2 Body information 6 6.3 Summary of inspection report information 6 Appendix A (informative appendix) Surface evapotranspiration ground observation instruments and methods of use 7 Appendix B (informative appendix) Method for obtaining the relative true value of surface evapotranspiration 9 Appendix C (informative appendix) Accuracy calculation method of remote sensing products for surface evapotranspiration 10ForewordThis 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. Beijing Normal University, Chongqing Survey Institute, Handan College, Southwest University, 21st Century Space Technology Application Unit Co., Ltd., Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Institute of Aerospace Information Innovation, Chinese Academy of Sciences. The main drafters of this standard. Liu Shaomin, Jia Zhenzhen, Xu Ziwei, Zhang Yuan, Xu Tongren, Ma Yanfei, Song Lisheng, Yao Yunjun, Zhou Huizhen, Li Xin, Liu Zhaoyan.IntroductionSurface evapotranspiration is the sum of vegetation transpiration, evaporation of precipitation intercepted by soil, water, and vegetation canopy, as well as the sublimation of ice and snow. It is the surface energy An important component of balance and water cycle. Remote sensing technology is one of the effective means to obtain continuous surface evapotranspiration in time and space. Remote sensing products of surface evapotranspiration at global and regional scales. Due to the limitations of algorithms and data, remote sensing products for surface evapotranspiration inevitably exist Errors need to be verified for authenticity. However, due to differences in verification data, inspection methods, and evaluation indicators, the current authenticity test results The results are not comparable, so it is necessary to formulate scientific and standardized testing standards for the authenticity of remote sensing products of surface evapotranspiration. Verification of the authenticity of remote sensing products for surface evapotranspiration1 ScopeThis standard specifies the basic requirements, inspection methods and inspection reports for the authenticity inspection of remote sensing products for surface evapotranspiration. This standard is applicable to the authenticity inspection of remote sensing products of surface evapotranspiration on a daily/monthly/year global scale and regional scale.2 Normative referencesThe 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 references, the latest version (including all modified versions) is applicable to this document. 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 products3 Terms and definitionsThe following terms and definitions defined in GB/T 36296-2018 and GB/T 39468-2020 apply to this document. 3.1 Land surface evapotranspiration The process in which liquid or solid water enters the atmosphere through the interface of vegetation, soil, water, ice and snow on the surface of the land. Note 1.Including the evaporation of vegetation, soil, water and vegetation canopy intercepted precipitation evaporation, and the sublimation of snow and ice. Note 2.The unit is millimeter (mm). 3.2 Fluxsourcearea The upwind region that has a major contribution to flux observations. Note. It can be obtained by integrating the transmission function of the instrument observation value and the spatial distribution of the near-surface source/sink space in a specific area.4 Basic requirementsThe authenticity inspection of remote sensing products for surface evapotranspiration shall comply with the provisions of Chapter 7 of GB/T 36296-2018 and meet the following requirements. a) The reference object should be in the same area at the same time as the remote sensing product of surface evapotranspiration to be inspected; b) The reference object should cover the main surface types of the inspection area, with high, medium and low surface evapotranspiration values; c) The reference object should be the first choice to observe the surface evapotranspiration data from the ground, or it can be selected as the projection method of the remote sensing product of the surface evapotranspiration to be inspected. Remote sensing products (or model products, reanalysis data, etc.) that have been inspected or multiple types of land surface evapotranspiration to be inspected with the same temporal and spatial resolution, or Data on the impact factors of surface evapotranspiration have been checked.5 Inspection method5.1 Inspection method selection Choose the corresponding inspection method according to the availability of the reference object. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 40033-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 40033-2021_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 40033-2021_English with my colleagues?Answer: Yes. 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