Remote Sensing of Sun-Induced Chlorophyll Fluorescence (SIF) is a research field of growing interest because it offers the potential to quantify actual photosynthesis and to monitor plant status. New satellite missions from the European Space Agency, such as the Earth Explorer 8 FLuorescence EXplorer (FLEX) mission-scheduled to launch in 2022 and aiming at SIF mapping-and from the National Aeronautics and Space Administration (NASA) such as the Orbiting Carbon Observatory-2 (OCO-2) sampling mission launched in July 2014, provide the capability to estimate SIF from space. The detection of the SIF signal from airborne and satellite platform is difficult and reliable ground level data are needed for calibration/validation. Several commercially available spectroradiometers are currently used to retrieve SIF in the field. This study presents a comparison exercise for evaluating the capability of four spectroradiometers to retrieve SIF. The results show that an accurate far-red SIF estimation can be achieved using spectroradiometers with an ultrafine resolution (less than 1 nm), while the red SIF estimation requires even higher spectral resolution (less than 0.5 nm). Moreover, it is shown that the Signal to Noise Ratio (SNR) plays a significant role in the precision of the far-red SIF measurements.

Julitta, T., Corp, L., Rossini, M., Burkart, A., Cogliati, S., Davies, N., et al. (2016). Comparison of sun-induced chlorophyll fluorescence estimates obtained from four portable field spectroradiometers. REMOTE SENSING, 8(2) [10.3390/rs8020122].

Comparison of sun-induced chlorophyll fluorescence estimates obtained from four portable field spectroradiometers

ROSSINI, MICOL;COGLIATI, SERGIO;COLOMBO, ROBERTO
Ultimo
2016

Abstract

Remote Sensing of Sun-Induced Chlorophyll Fluorescence (SIF) is a research field of growing interest because it offers the potential to quantify actual photosynthesis and to monitor plant status. New satellite missions from the European Space Agency, such as the Earth Explorer 8 FLuorescence EXplorer (FLEX) mission-scheduled to launch in 2022 and aiming at SIF mapping-and from the National Aeronautics and Space Administration (NASA) such as the Orbiting Carbon Observatory-2 (OCO-2) sampling mission launched in July 2014, provide the capability to estimate SIF from space. The detection of the SIF signal from airborne and satellite platform is difficult and reliable ground level data are needed for calibration/validation. Several commercially available spectroradiometers are currently used to retrieve SIF in the field. This study presents a comparison exercise for evaluating the capability of four spectroradiometers to retrieve SIF. The results show that an accurate far-red SIF estimation can be achieved using spectroradiometers with an ultrafine resolution (less than 1 nm), while the red SIF estimation requires even higher spectral resolution (less than 0.5 nm). Moreover, it is shown that the Signal to Noise Ratio (SNR) plays a significant role in the precision of the far-red SIF measurements.
Articolo in rivista - Articolo scientifico
Field spectroscopy; Fraunhofer line depth (FLD); Sensor characteristics; SIF calibration/validation; SIF retrieval methods; Signal to noise ratio (SNR); Spectral resolution; Sun-induced chlorophyll fluorescence (SIF);
Field spectroscopy; Fraunhofer line depth (FLD); Sensor characteristics; SIF calibration/validation; SIF retrieval methods; Signal to noise ratio (SNR); Spectral resolution; Sun-induced chlorophyll fluorescence (SIF); Earth and Planetary Sciences (all)
English
2016
8
2
122
open
Julitta, T., Corp, L., Rossini, M., Burkart, A., Cogliati, S., Davies, N., et al. (2016). Comparison of sun-induced chlorophyll fluorescence estimates obtained from four portable field spectroradiometers. REMOTE SENSING, 8(2) [10.3390/rs8020122].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/163438
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