30 m Raster Dataset of Seawater Quality in Bohai Sea (2017-2023)
LI Jie1DU Jinze1
1 China City Development Academy Northwest Research Institute，Lanzhou 730000，China
DOI:10.3974/geodb.2025.10.07.V1
Published:Oct. 2025
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Key Words：
the bohai sea; Seawater; Water Quality; monitor; data,
Abstract：
The 30 m raster dataset of seawater quality in Bohai Sea (2017-2023) was developed based on the Bohai Sea water quality monitoring data from the Marine Water Quality Monitoring Information Disclosure System, Ministry of Ecology and Environment of the People's Republic of China. The data from 129 to 240 sampling stations during 2017-2023 were processed, spatial interpolated, and validated. The dataset includes: (1) 30-m water quality data (.tif), including water quality type and area information. (2) point-based water quality monitoring elements data (.gdb), containing 21 fields such as sea area, province, city, station code, measured longitude, measured latitude, monitoring time, pH (dimensionless), dissolved oxygen (mg/L), chemical oxygen demand (mg/L), inorganic salts (mg/L), active phosphate (mg/L), petroleum (mg/L), water quality category, and data source. The dataset is archived in .gdb and .tif formats, and consists of 251 files with data size of 29.9 MB (compressed into one file with 3.91 MB).
Foundation Item：
Data Citation：
LI Jie, DU Jinze. 30 m Raster Dataset of Seawater Quality in Bohai Sea (2017-2023)[J/DB/OL]. Digital Journal of Global Change Data Repository, 2025. https://doi.org/10.3974/geodb.2025.10.07.V1.
References：
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[4] Wu, Z., Guo, Z. X., Wang, J. Z., et al. Status of offshore water environment and measures for sustainable use in Zhuhai City [J]. Environment and Exploitation, 2000(4): 22-23.
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[6] Zhang, G. G., Yan, J. S., Wu, T. T., et al. Comprehensive evaluation of water quality in the nearshore waters of major cities around the Bohai Sea [J]. Journal of Hydroecology, 2022, 43(4): 63-70. DOI: 10.15928/j.1674-3075.202010260309.
[7] http://ep.nmemc.org.cn:8888/Water/.
Data Product:
| ID |
Data Name |
Data Size |
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| 1 |
BohaiSeaWaterQuality2017-2023.rar |
4004.36KB |
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