Article (Scientific journals)
Value of sun-induced chlorophyll fluorescence for quantifying hydrological states and fluxes: Current status and challenges
Jonard, François; De Cannière, S.; Brüggemann, N. et al.
2020In Agricultural and Forest Meteorology, 291
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Keywords :
Drought stress; Hydrological processes; Radiative transfer model; Soil water availability; Solar-induced chlorophyll fluorescence; Transpiration
Abstract :
[en] Predictions of hydrological states and fluxes, especially transpiration, are poorly constrained in hydrological models due to large uncertainties in parameterization and process description. Novel technologies like remote sensing of sun-induced chlorophyll fluorescence (SIF)—which provides information from the photosynthetic apparatus—may help in constraining water cycle components. This paper discusses the nature of the plant physiological basis of the fluorescence signal and analyses the current literature linking hydrological states and fluxes to SIF. Given the connection between photosynthesis and transpiration, through the water use efficiency, SIF may serve as a pertinent constraint for hydrological models. The FLuorescence EXplorer (FLEX) satellite, planned to be launched in 2023, is expected to provide spatially high-resolution measurements of red and far-red SIF complementing the products from existing satellite missions and the high-temporal resolution products from upcoming geostationary missions. This new data stream may allow us to better constrain plant transpiration, assess the impacts of water stress on plants, and infer processes occurring in the root zone through the soil-plant water column. To make optimal use of this data, progress needs to be made in 1) our process representation of spatially aggregated fluorescence signals from spaceborne SIF instruments, 2) integration of fluorescence processes in hydrological models—particularly when paired with other satellite data, 3) quantifying the impact of soil moisture on SIF across scales, and 4) assessment of the accuracy of SIF measurements—especially from space. © 2020 Elsevier B.V.
Disciplines :
Environmental sciences & ecology
Earth sciences & physical geography
Author, co-author :
Jonard, François  ;  Université de Liège - ULiège > Département de géographie > Systèmes d'information géographiques
De Cannière, S.;  Earth and Life Institute, Université catholique de Louvain, Belgium
Brüggemann, N.;  Agrosphere (IBG-3), Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Germany
Gentine, P.;  Department of Earth and Environmental Engineering, Columbia University, New York, NY, United States
Short Gianotti, D. J.;  Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
Lobet, G.;  Agrosphere (IBG-3), Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Germany, Earth and Life Institute, Université catholique de Louvain, Belgium
Miralles, D. G.;  Hydro-Climate Extremes Lab (H-CEL), Ghent University, Belgium
Montzka, C.;  Agrosphere (IBG-3), Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Germany
Pagán, B. R.;  Hydro-Climate Extremes Lab (H-CEL), Ghent University, Belgium
Rascher, U.;  Plant Sciences (IBG-2), Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Germany
Vereecken, H.;  Agrosphere (IBG-3), Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Germany
Language :
English
Title :
Value of sun-induced chlorophyll fluorescence for quantifying hydrological states and fluxes: Current status and challenges
Publication date :
2020
Journal title :
Agricultural and Forest Meteorology
ISSN :
0168-1923
eISSN :
1873-2240
Publisher :
Elsevier B.V.
Volume :
291
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 21 September 2021

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