Inversion of chlorophyll a concentration in Baiyangdian Lake based on measured spectra

ZHANG Shenghao; ZHAO Qichao; HAN Baohui; CAO Shujun; ZHAO Xuechun; LEI Xiao

doi:10.3969/j.issn.1673-6141.2024.04.007

Journal of Atmospheric and Environmental Optics, Volume. 19, Issue 4, 468(2024)

Inversion of chlorophyll a concentration in Baiyangdian Lake based on measured spectra

ZHANG Shenghao^1,2、*, ZHAO Qichao^1,2, HAN Baohui^1,2, CAO Shujun^1,2, ZHAO Xuechun^1,2, and LEI Xiao³

¹School of Remote Sensing and Information Engineering, North China Institute of Aerospace Engineering,Langfang 065000, China

²Hebei Collaborative Innovation Center of Aerospace Remote Sensing Information Processing and Application,Langfang 065000, China

³Soil Ecological Environment Department of Langfang Ecological Environment Bureau, Langfang 065008, China

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Fig. 1. Distribution map of water sampling points

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Fig. 2. Measured Chl-a concentration in Baiyangdian Lake

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Fig. 3. Measured spectral curve of water body. (a) Spectral curve (points 1~10); (b) spectral curve (points 11~20);(c) spectral curve (points 21~27)

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Fig. 4. Correlation between Chl-a concentration and reflectance at each wavelength

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Fig. 5. The inversion model of $[{R_{r s}}^{- 1} (673) - {R_{r s}}^{- 1} (729)] R_{r s} (782)$

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Fig. 6. Verification of accuracy in $[{R_{r s}}^{- 1} (673) - {R_{r s}}^{- 1} (729)] R_{r s} (782)$

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Fig. 7. The inversion model of $R_{r s} (794) / R_{r s} (731)$

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Fig. 8. The inversion model of $R_{r s} (574)$

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Fig. 9. Accuracy of the $R_{r s} (794) / R_{r s} (731)$ model

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Fig. 10. Accuracy of the $R_{r s} (574)$ model

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Shenghao ZHANG, Qichao ZHAO, Baohui HAN, Shujun CAO, Xuechun ZHAO, Xiao LEI. Inversion of chlorophyll a concentration in Baiyangdian Lake based on measured spectra[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(4): 468

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Paper Information

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Received: Aug. 10, 2022

Accepted: --

Published Online: Jan. 8, 2025

The Author Email: Shenghao ZHANG (hao19980605@foxmail.com)

DOI:10.3969/j.issn.1673-6141.2024.04.007

Topics

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