{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T02:02:10Z","timestamp":1768701730512,"version":"3.49.0"},"reference-count":45,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2016,2,5]],"date-time":"2016-02-05T00:00:00Z","timestamp":1454630400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>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\u2014scheduled to launch in 2022 and aiming at SIF mapping\u2014and 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.<\/jats:p>","DOI":"10.3390\/rs8020122","type":"journal-article","created":{"date-parts":[[2016,2,5]],"date-time":"2016-02-05T10:06:16Z","timestamp":1454666776000},"page":"122","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":69,"title":["Comparison of Sun-Induced Chlorophyll Fluorescence Estimates Obtained from Four Portable Field Spectroradiometers"],"prefix":"10.3390","volume":"8","author":[{"given":"Tommaso","family":"Julitta","sequence":"first","affiliation":[{"name":"Remote Sensing of Environmental Dynamics Lab., DISAT, Universit\u00e0 di Milano-Bicocca, P.zza della Scienza 1, 20126 Milan, Italy"}]},{"given":"Lawrence","family":"Corp","sequence":"additional","affiliation":[{"name":"Science Systems and Applications Inc., Lanham, MD 20706, USA"}]},{"given":"Micol","family":"Rossini","sequence":"additional","affiliation":[{"name":"Remote Sensing of Environmental Dynamics Lab., DISAT, Universit\u00e0 di Milano-Bicocca, P.zza della Scienza 1, 20126 Milan, Italy"}]},{"given":"Andreas","family":"Burkart","sequence":"additional","affiliation":[{"name":"Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum J\u00fclich GmbH, 52425 J\u00fclich, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7192-2032","authenticated-orcid":false,"given":"Sergio","family":"Cogliati","sequence":"additional","affiliation":[{"name":"Remote Sensing of Environmental Dynamics Lab., DISAT, Universit\u00e0 di Milano-Bicocca, P.zza della Scienza 1, 20126 Milan, Italy"}]},{"given":"Neville","family":"Davies","sequence":"additional","affiliation":[{"name":"Ocean Optics, Oxford OX4 2JY, UK"}]},{"given":"Milton","family":"Hom","sequence":"additional","affiliation":[{"name":"Science Systems and Applications Inc., Lanham, MD 20706, USA"}]},{"given":"Alasdair","family":"Mac Arthur","sequence":"additional","affiliation":[{"name":"NERC Field Spectroscopy Facility, School of Geosciences, University of Edinburgh, Grant Institute, Kings Buildings, West Mains Road, Edinburgh EH9 3FE, UK"}]},{"given":"Elizabeth","family":"Middleton","sequence":"additional","affiliation":[{"name":"Biospheric Sciences Laboratory, NASA\/Goddard Space Flight Center, Greenbelt, MD 20771, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9993-4588","authenticated-orcid":false,"given":"Uwe","family":"Rascher","sequence":"additional","affiliation":[{"name":"Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum J\u00fclich GmbH, 52425 J\u00fclich, Germany"}]},{"given":"Anke","family":"Schickling","sequence":"additional","affiliation":[{"name":"Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum J\u00fclich GmbH, 52425 J\u00fclich, Germany"}]},{"given":"Roberto","family":"Colombo","sequence":"additional","affiliation":[{"name":"Remote Sensing of Environmental Dynamics Lab., DISAT, Universit\u00e0 di Milano-Bicocca, P.zza della Scienza 1, 20126 Milan, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2016,2,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"659","DOI":"10.1093\/jexbot\/51.345.659","article-title":"Chlorophyll fluorescence\u2014A practical guide","volume":"51","author":"Maxwell","year":"2000","journal-title":"J. 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