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Comparison of Sun-Induced Chlorophyll Fluorescence Estimates Obtained from Four Portable Field SpectroradiometersRemote 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.
Document ID
20170003340
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Julitta, Tommaso
(Milan Univ. Italy)
Corp, Lawrence A.
(Science Systems and Applications, Inc. Lanham, MD, United States)
Rossini, Micol
(Milan Univ. Italy)
Burkart, Andreas
(Forschungszentrum Juelich G.m.b.H. Juelich, Germany)
Cogliati, Sergio
(Milan Univ. Italy)
Davies, Neville
(Ocean Optics, Inc. Dunedin, FL, United States)
Hom, Milton
(Science Systems and Applications, Inc. Lanham, MD, United States)
Mac Arthur, Alasdair
(Edinburgh Univ. United Kingdom)
Middleton, Elizabeth M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Rascher, Uwe
(Forschungszentrum Juelich G.m.b.H. Juelich, Germany)
Schickling, Anke
(Forschungszentrum Juelich G.m.b.H. Juelich, Germany)
Colombo, Roberto
(Milan Univ. Italy)
Date Acquired
April 11, 2017
Publication Date
February 5, 2016
Publication Information
Publication: Remote Sensing
Publisher: MDPI
Volume: 8
Issue: 2
ISSN: 2072-4292
e-ISSN: 2072-4292
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN41409
Funding Number(s)
CONTRACT_GRANT: NNG15HQ01C
Distribution Limits
Public
Copyright
Other

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