Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes

We report the first radiative transfer model that is able to simulate phytoplankton fluorescence with both photochemical and non-photochemical quenching included. The fluorescence source term in the inelastic radiative transfer equation is proportional to both the quantum yield and scalar irradiance...

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Main Authors: Peng-Wang Zhai, Emmanuel Boss, Bryan Franz, P. Jeremy Werdell, Yongxiang Hu
Format: Article
Language:English
Published: MDPI AG 2018-08-01
Series:Remote Sensing
Subjects:
Online Access:http://www.mdpi.com/2072-4292/10/8/1309
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author Peng-Wang Zhai
Emmanuel Boss
Bryan Franz
P. Jeremy Werdell
Yongxiang Hu
author_facet Peng-Wang Zhai
Emmanuel Boss
Bryan Franz
P. Jeremy Werdell
Yongxiang Hu
author_sort Peng-Wang Zhai
collection DOAJ
description We report the first radiative transfer model that is able to simulate phytoplankton fluorescence with both photochemical and non-photochemical quenching included. The fluorescence source term in the inelastic radiative transfer equation is proportional to both the quantum yield and scalar irradiance at excitation wavelengths. The photochemical and nonphotochemical quenching processes change the quantum yield based on the photosynthetic active radiation. A sensitivity study was performed to demonstrate the dependence of the fluorescence signal on chlorophyll a concentration, aerosol optical depths and solar zenith angles. This work enables us to better model the phytoplankton fluorescence, which can be used in the design of new space-based sensors that can provide sufficient sensitivity to detect the phytoplankton fluorescence signal. It could also lead to more accurate remote sensing algorithms for the study of phytoplankton physiology.
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spelling doaj.art-a384db08ae824bcd8164a533d17f81ba2022-12-22T04:15:01ZengMDPI AGRemote Sensing2072-42922018-08-01108130910.3390/rs10081309rs10081309Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching ProcessesPeng-Wang Zhai0Emmanuel Boss1Bryan Franz2P. Jeremy Werdell3Yongxiang Hu4Department of Physics, University of Maryland Baltimore County, Baltimore, MD 21250, USASchool of Marine Sciences, University of Maine, Orono, ME 04401, USANASA Goddard Space Flight Center, Code 616, Greenbelt, MD 20771, USANASA Goddard Space Flight Center, Code 616, Greenbelt, MD 20771, USAMS 475 NASA Langley Research Center, Hampton, VA 23681-2199, USAWe report the first radiative transfer model that is able to simulate phytoplankton fluorescence with both photochemical and non-photochemical quenching included. The fluorescence source term in the inelastic radiative transfer equation is proportional to both the quantum yield and scalar irradiance at excitation wavelengths. The photochemical and nonphotochemical quenching processes change the quantum yield based on the photosynthetic active radiation. A sensitivity study was performed to demonstrate the dependence of the fluorescence signal on chlorophyll a concentration, aerosol optical depths and solar zenith angles. This work enables us to better model the phytoplankton fluorescence, which can be used in the design of new space-based sensors that can provide sufficient sensitivity to detect the phytoplankton fluorescence signal. It could also lead to more accurate remote sensing algorithms for the study of phytoplankton physiology.http://www.mdpi.com/2072-4292/10/8/1309radiative transferocean opticsinelastic scatteringfluorescence
spellingShingle Peng-Wang Zhai
Emmanuel Boss
Bryan Franz
P. Jeremy Werdell
Yongxiang Hu
Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes
Remote Sensing
radiative transfer
ocean optics
inelastic scattering
fluorescence
title Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes
title_full Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes
title_fullStr Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes
title_full_unstemmed Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes
title_short Radiative Transfer Modeling of Phytoplankton Fluorescence Quenching Processes
title_sort radiative transfer modeling of phytoplankton fluorescence quenching processes
topic radiative transfer
ocean optics
inelastic scattering
fluorescence
url http://www.mdpi.com/2072-4292/10/8/1309
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