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| 001 | 866589 | ||
| 005 | 20210130003532.0 | ||
| 024 | 7 | _ | |a 10.3390/rs11161840 |2 doi |
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| 082 | _ | _ | |a 620 |
| 100 | 1 | _ | |a Cogliati, Sergio |0 0000-0002-7192-2032 |b 0 |e Corresponding author |
| 245 | _ | _ | |a A Spectral Fitting Algorithm to Retrieve the Fluorescence Spectrum from Canopy Radiance |
| 260 | _ | _ | |a Basel |c 2019 |b MDPI |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Retrieval of Sun-Induced Chlorophyll Fluorescence (F) spectrum is one of the challenging perspectives for further advancing F studies towards a better characterization of vegetation structure and functioning. In this study, a simplified Spectral Fitting retrieval algorithm suitable for retrieving the F spectrum with a limited number of parameters is proposed (two parameters for F). The novel algorithm is developed and tested on a set of radiative transfer simulations obtained by coupling SCOPE and MODTRAN5 codes, considering different chlorophyll content, leaf area index and noise levels to produce a large variability in fluorescence and reflectance spectra. The retrieval accuracy is quantified based on several metrics derived from the F spectrum (i.e., red and far-red peaks, O2 bands and spectrally-integrated values). Further, the algorithm is employed to process experimental field spectroscopy measurements collected over different crops during a long-lasting field campaign. The reliability of the retrieval algorithm on experimental measurements is evaluated by cross-comparison with F values computed by an independent retrieval method (i.e., SFM at O2 bands). For the first time, the evolution of the F spectrum along the entire growing season for a forage crop is analyzed and three diverse F spectra are identified at different growing stages. The results show that red F is larger for young canopy; while red and far-red F have similar intensity in an intermediate stage; finally, far-red F is significantly larger for the rest of the season |
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| 700 | 1 | _ | |a Celesti, Marco |0 0000-0001-7249-7106 |b 1 |
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| 700 | 1 | _ | |a Drusch, Matthias |0 P:(DE-HGF)0 |b 7 |
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| 700 | 1 | _ | |a Colombo, Roberto |0 P:(DE-HGF)0 |b 10 |
| 773 | _ | _ | |a 10.3390/rs11161840 |g Vol. 11, no. 16, p. 1840 - |0 PERI:(DE-600)2513863-7 |n 16 |p 1840 - |t Remote sensing |v 11 |y 2019 |x 2072-4292 |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/866589/files/remotesensing-11-01840.pdf |
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