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GB/T 45424-2025: Technical guidelines for satellite monitoring - Cyanobacterial bloom
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 45424-2025 | English | 199 |
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Technical guidelines for satellite monitoring - Cyanobacterial bloom
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GB/T 45424-2025
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Basic data | Standard ID | GB/T 45424-2025 (GB/T45424-2025) | | Description (Translated English) | Technical guidelines for satellite monitoring - Cyanobacterial bloom | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A47 | | Classification of International Standard | 07.060 | | Word Count Estimation | 10,130 | | Date of Issue | 2025-02-28 | | Date of Implementation | 2025-06-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 45424-2025: Technical guidelines for satellite monitoring - Cyanobacterial bloom---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.
GB/T 45424-2025 English version. Technical guidelines for satellite monitoring - Cyanobacterial bloom
ICS 07.060
CCSA47
National Standard of the People's Republic of China
Technical Guidelines for Satellite Remote Sensing Monitoring of Cyanobacterial Blooms
Released on 2025-02-28
2025-06-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Monitoring content 1
5 Data requirements 1
5.1 Satellite data 1
5.2 Auxiliary Data 2
5.3 Data Preprocessing 2
6 Monitoring and processing flow 2
7 Identification of cyanobacterial blooms 2
8 Monitoring of cyanobacterial bloom coverage 3
8.1 Single pixel cyanobacteria bloom coverage 3
8.2 Cyanobacteria bloom coverage classification 3
9 Total area monitoring of cyanobacteria blooms 3
9.1 Total area of cyanobacteria blooms 3
9.2 Total area actually covered by cyanobacterial blooms 4
References 5
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Meteorological Administration.
This document is under the jurisdiction of the National Satellite Meteorology and Space Weather Standardization Technical Committee (SAC/TC347).
This document was drafted by. National Satellite Meteorological Center.
The main drafters of this document. Wang Meng, Han Xiuzhen, Zheng Wei, Geng Weicheng, and Liu Cheng.
Technical Guidelines for Satellite Remote Sensing Monitoring of Cyanobacterial Blooms
1 Scope
This document specifies the monitoring content and data requirements for satellite remote sensing monitoring of cyanobacteria blooms, and describes the monitoring process and monitoring indicators.
Calculation method.
This document applies to satellite remote sensing monitoring and treatment of cyanobacterial blooms.
2 Normative references
This document has no normative references.
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Cyanobacterial bloom
A natural ecological phenomenon in which cyanobacteria multiply in large numbers in eutrophic water bodies and float on the water surface, causing abnormal water color.
3.2
Cyanobacterial bloom coverage of one pixel
The actual coverage area of cyanobacteria bloom in a single pixel is the percentage of the pixel area.
3.3
Total cyanobacterial bloom area
The total area of pixels where cyanobacterial blooms occur.
3.4
Normalized difference vegetation index normalized difference vegetation index; NDVI
The difference in reflectivity between the near-infrared and red light bands divided by the sum of the two.
[Source. GB/T 34814-2017, 2.10]
4 Monitoring content
Satellite remote sensing monitoring of cyanobacteria blooms should include the following.
a) Information on cyanobacteria blooms;
b) Cyanobacteria bloom coverage information. single-pixel cyanobacteria bloom coverage and cyanobacteria bloom coverage classification;
c) Information on the area of cyanobacterial blooms. the total area of cyanobacterial blooms and the total area actually covered by cyanobacterial blooms.
5 Data requirements
5.1 Satellite data
Satellite data should come from remote sensing satellites carrying visible light, near infrared and other band detection instruments. Among them, the visible light band range should be
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