TY  - JOUR
AU  - Pilar Cendrero-Mateo, M.
AU  - Wieneke, Sebastian
AU  - Damm, Alexander
AU  - Alonso, Luis
AU  - Pinto, Francisco
AU  - Moreno, Jose
AU  - Guanter, Luis
AU  - Celesti, Marco
AU  - Rossini, Micol
AU  - Sabater, Neus
AU  - Cogliati, Sergio
AU  - Julitta, Tommaso
AU  - Rascher, Uwe
AU  - Goulas, Yves
AU  - Aasen, Helge
AU  - Pacheco-Labrador, Javier
AU  - Mac Arthur, Alasdair
TI  - Sun-Induced Chlorophyll Fluorescence III: Benchmarking Retrieval Methods and Sensor Characteristics for Proximal Sensing
JO  - Remote sensing
VL  - 11
IS  - 8
SN  - 2072-4292
CY  - Basel
PB  - MDPI
M1  - FZJ-2019-04498
SP  - 962
PY  - 2019
AB  - The interest of the scientific community on the remote observation of sun-induced chlorophyll fluorescence (SIF) has increased in the recent years. In this context, hyperspectral ground measurements play a crucial role in the calibration and validation of future satellite missions. For this reason, the European cooperation in science and technology (COST) Action ES1309 OPTIMISE has compiled three papers on instrument characterization, measurement setups and protocols, and retrieval methods (current paper). This study is divided in two sections; first, we evaluated the uncertainties in SIF retrieval methods (e.g., Fraunhofer line depth (FLD) approaches and spectral fitting method (SFM)) for a combination of off-the-shelf commercial spectrometers. Secondly, we evaluated how an erroneous implementation of the retrieval methods increases the uncertainty in the estimated SIF values. Results show that the SFM approach applied to high-resolution spectra provided the most reliable SIF retrieval with a relative error (RE) ≤6% and <5% for F687 and F760, respectively. Furthermore, although the SFM was the least affected by an inaccurate definition of the absorption spectral window (RE = 5%) and/or interpolation strategy (RE = 15–30%), we observed a sensitivity of the SIF retrieval for the simulated training data underlying the SFM model implementation
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000467646800072
DO  - DOI:10.3390/rs11080962
UR  - https://juser.fz-juelich.de/record/864851
ER  -