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The Yueqing Bay Nutrient Concentration Remote Sensing Dataset

Home > Dataset > China Sea Water Quality Data > The Yueqing Bay Nutrient Concentration Remote Sensing Dataset

Information

Producer Second Institute of Oceanography (SIO)
Data type Remote Sensing (Landsat8-OLI）
Dataset abbreviation DIN/PO4
Temporal extent

2013-2020
Processing level L3B
Spatial extent

The Yueqing Bay
Spatial resolution 30m
Temporal resolution tbc
Projection WGS 84
 

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Description

The concentration of inorganic nitrogen (DIN) refers to the sum of nitrate nitrogen, nitrite nitrogen and ammonia nitrogen in seawater. Active phosphate (PO4-P) concentration refers to the total amount of orthophosphate in seawater that can be taken up by phytoplankton. The unit is mg/L.
 
Based on the matching data pairs and through correlation analysis, a total of 5 parameters including sea surface temperature, red light band, near-infrared band and two short-wave infrared bands were selected as the input parameters of the inorganic nitrogen inversion model. A total of three parameters in the red light band and near-infrared band were used as input parameters of the active phosphate inversion model, and the support vector machine regression algorithm was used to construct the Yueqing Bay nutrient concentration inversion model (R2>0.8 of the inorganic nitrogen inversion model, P <0.001, RMSE<0.0610 mg/L; R2 of the active phosphate inversion model>0.76, P<0.001, RMSE<0.0063 mg/L), and the nutrient concentration product of the Yueqing Bay is obtained through the model inversion. For 2013-2020, the spatial resolution is 30 meters.
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Naming Convention

SIO_LANDSAT8_OLI_YYYYMMDD000000_L3A_YQB_30M_DIN_ZBZ2021
SIO_LANDSAT8_OLI_YYYYMMDD000000_L3A_YQB_30M_PO4_ZBZ2021
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Related Website

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Reference

[1] Zhu, Bozhong, Bai, Yan, Zhang, Zhao, He, Xianqiang, Wang, Zhihong, Zhang, Shugang, Dai, Qian. Satellite Remote Sensing of Water Quality Variation in a Semi-Enclosed Bay (Yueqing Bay) under Strong Anthropogenic Impact. Remote Sens. 2022, 14, 550. https://doi.org/10.3390/rs14030550.
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