{"id":81960,"date":"2019-01-30T12:16:44","date_gmt":"2019-01-30T17:16:44","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/temperature-controlled-spectrometer-system\/"},"modified":"2019-01-30T12:16:44","modified_gmt":"2019-01-30T17:16:44","slug":"temperature-controlled-spectrometer-system","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/temperature-controlled-spectrometer-system\/","title":{"rendered":"A temperature-controlled spectrometer system for continuous and unattended measurements of canopy spectral radiance and reflectance"},"content":{"rendered":"\n

Published in International Journal of Remote Sensing\u00a035(5): 1769-1785<\/strong><\/p>\n

This paper describes the development of a fully automated system for collecting high-resolution spectral data over a forested footprint. The system comprises a pair of off-the-shelf spectrometers in a custom-built thermal enclosure with a fixed off-nadir downward (target)-pointing fibre and upward-pointing fibre for irradiance measurement. Both instruments sample simultaneously via custom-written and user-controlled software during all weathers and sky conditions. The system is mounted on a 25 m eddy covariance scaffolding tower, approximately 7 m from a Scots pine forest canopy. The system was installed at the University of Helsinki\u2019s SMEAR-II Field Station in Hyyti\u00e4l\u00e4 in March 2010 and has been operating continuously through a joint programme between the Universities of Edinburgh and Helsinki. The system was designed to capture diurnal and seasonal variation in vegetation light-use efficiency and fluorescence through the capture and analysis of well-defined narrow spectral features, but its implementation would permit the extraction of further optical signals linked to vegetation biophysical variables, and provide a continuous data stream with which to validate satellite data products including vegetation indices such as the photochemical reflectance index (PRI) as well as spectral indicators of solar induced fluorescence.<\/p>\n","protected":false},"excerpt":{"rendered":"

Published in International Journal of Remote Sensing\u00a035(5): 1769-1785 This paper describes the development of a fully automated system for collecting high-resolution spectral data over a forested footprint. The system comprises a pair of off-the-shelf spectrometers in a custom-built thermal enclosure with a fixed off-nadir downward (target)-pointing fibre and upward-pointing fibre for irradiance measurement. Both instruments […]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1184,1180,1181],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1079],"class_list":["post-81960","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forest-growth-and-yield-modelling","cptt_theme-forestry-research","cptt_theme-forests","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-drolet-guillaume"],"acf":[],"yoast_head":"\nA temperature-controlled spectrometer system for continuous and unattended measurements of canopy spectral radiance and reflectance - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"Study on a temperature-controlled spectrometer system for continuous and unattended measurements of canopy spectral radiance and reflectance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/temperature-controlled-spectrometer-system\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A temperature-controlled spectrometer system for continuous and unattended measurements of canopy spectral radiance and reflectance - 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