气候变化领域集成服务门户(CCPortal): Sun-induced fluorescence closely linked to ecosystem transpiration as evidenced by satellite data and radiative transfer models

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DOI	10.1016/j.rse.2020.112030
	Sun-induced fluorescence closely linked to ecosystem transpiration as evidenced by satellite data and radiative transfer models
	Maes W.H.; Pagán B.R.; Martens B.; Gentine P.; Guanter L.; Steppe K.; Verhoest N.E.C.; Dorigo W.; Li X.; Xiao J.; Miralles D.G.
发表日期	2020
ISSN	00344257
卷号	249
英文摘要	Transpiration (T) returns about half of continental precipitation back into the atmosphere. However, the global spatial and temporal dynamics of transpiration are highly uncertain, and current estimates rely on either indirect remote sensing or empirical model formulations. Here, we show that T can be estimated reliably at the global scale using observations of plant sun-induced fluorescence (SIF). To do so, we derive T using two different methods from globally-distributed eddy-covariance measurements and compare it with satellite SIF retrievals from GOME-2 and OCO-2. Whereas most research to date has focused on the link between SIF and gross primary production (GPP), we demonstrate that SIF is as highly correlated with T (mean correlation coefficient R of 0.76 across sites for 16-day periods with GOME-2 and 0.75 at the daily scale with OCO-2). SIF shows a greater predictive skill to estimate T than traditional optical vegetation indices and its dynamics are very similar to those of T. Through the use of an advanced radiative transfer model, we also demonstrate a clear empirical link between SIF and T. At 83 FLUXNET sites, remote sensing data and flux-derived GPP and T are used to estimate the relevant parameters of the Soil Canopy Observation of Photosynthesis and Energy fluxes (SCOPE) radiative transfer model and to model SIF. While the relationship between SIF and photosynthesis (GPP) is mostly controlled by leaf biochemical properties and plant structure, the SIF–T relationship appears largely determined by air temperature and intrinsic water use efficiency. Our findings suggest that ongoing advances in satellite SIF retrievals will allow for a more direct estimation of transpiration over large scales. © 2020 Elsevier Inc.
英文关键词	Evapotranspiration; FLUXNET; GOME-2; OCO-2; Photosynthesis; SCOPE; Solar-induced fluorescence; Transpiration
语种	英语
scopus关键词	Fluorescence; Photosynthesis; Remote sensing; Satellites; Transpiration; Biochemical properties; Correlation coefficient; Current estimates; Eddy covariance measurements; Gross primary production; Intrinsic water-use efficiencies; Radiative transfer model; Remote sensing data; Radiative transfer; air temperature; GOME; net primary production; primary production; satellite data; solar radiation; transpiration; water use efficiency
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179162
作者单位	UAV Research Centre, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, 9000, Belgium; Hydro-Climate Extremes Lab (H-CEL), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, 9000, Belgium; Environmental Modelling Unit, VITO, Flemish Institute for Technological Research, Boeretang 200, Mol, B-2400, Belgium; Department of Earth and Environmental Engineering, Columbia University, New York, 10027, United States; Centro de Tecnologı́as Fı́sicas, Universitat Politecnica de Valencia, Valencia, Valenciana, Spain; Laboratory of Plant Ecology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, Ghent, 9000, Belgium; Department of Geodesy and Geoinformation, TU Wien, Gusshausstr 27-29/E120, Wien, 1040, Austria; Earth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, United States
推荐引用方式 GB/T 7714	Maes W.H.,Pagán B.R.,Martens B.,et al. Sun-induced fluorescence closely linked to ecosystem transpiration as evidenced by satellite data and radiative transfer models[J],2020,249.
APA	Maes W.H..,Pagán B.R..,Martens B..,Gentine P..,Guanter L..,...&Miralles D.G..(2020).Sun-induced fluorescence closely linked to ecosystem transpiration as evidenced by satellite data and radiative transfer models.Remote Sensing of Environment,249.
MLA	Maes W.H.,et al."Sun-induced fluorescence closely linked to ecosystem transpiration as evidenced by satellite data and radiative transfer models".Remote Sensing of Environment 249(2020).