Guangdong, Hong Kong and Macao RS Dataset of Water Quality Parameters - China Sea Water Quality Data

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Information

Producer	Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
Data type	Remote Sensing (MODIS，Sentinel-3)
Dataset abbreviation	GML_WQC
Temporal extent	2002.7-2020.12
Processing level	L3B
Spatial extent	111°E~116°E， 19°N~24°N
Spatial resolution	1km; 300m
Temporal resolution	Monthly
Projection	WGS 84

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Description

The offshore water quality parameter remote sensing dataset includes three parameters: inorganic nitrogen (DIN), active phosphate (PO4) and water quality classification in the sea areas of Guangdong, Hong Kong and Macao. The spatial range of this product is: 111°E~116°E, 19°N~24°N. This product is based on the BP neural network and uses MODIS satellite and CDOM data to jointly invert nutrients and obtain the spatial distribution of inorganic nitrogen and active phosphate. In order to reduce the impact of cloud and rain weather on a single day, a monthly average calculation was performed on the MODIS data, and the spatial distribution of nutrients above the monthly average scale from July 2002 to December 2020 was obtained. On this basis, according to the Guangdong Provincial Marine Environmental Quality Bulletin (http://gdee.gd.gov.cn/), excessive nitrogen and phosphorus content in the study area are the main water quality pollution factors. Therefore, referring to the GB 3097-1997 seawater quality standard, using the spatiotemporal characteristics of nitrate and active phosphate to describe water quality conditions, a MODIS-based water quality product for Guangdong, Hong Kong and Macao was obtained. In addition, this dataset also provides featured water quality products based on Sentinel-3.

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Naming Convention

GML_MODIS_Aqua_SCS_1km_DIN_BP

GML_MODIS_Aqua_SCS_1km_PO4_BP

GML_MODIS_Aqua_SCS_1km_WQB_BP

GML_Sentinel3_OLCI_SCS_300m_WQB_BP

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This dataset is available in the SatCO2-GML version.

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Description

Naming Convention

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Reference

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