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Parent Dataset
SIOS instrument #49 - Hyperspectral measurements including sun-induced fluorescence (SIF) in Adventdalen
Data center: Norwegian Meteorological Institute / Arctic Data CentreSIOS INFRANOR, SIOS INFRANOR
Abstract:
Near-surface remote sensing techniques including hyperspectral sensors are essential monitoring tools to provide spatial and temporal resolution. More frequent and finer scale observations help to monitor specific plant communities and accurately time the phenological stages of vegetation and snow cover, A Hyperspectral field sensor (FloX) was installed as an integral part of an automatic system for monitoring vegetation and environmental seasonal changes (phenology) on Svalbard (AsMoVEn) funded by SIOS. The fluorescence box (FloX) is a unique instrument, enabling continuous observation of sun-induced chlorophyll fluorescence (SIF). FLoX measures spectral data of extremely high resolution, The FloX is specifically designed to passively measure chlorophyll fluorescence under natural light conditions. The core of the system is the QEPro spectrometer from Ocean Optics covering the Red/Near Infrared region (650 – 800 nm) with a spectral resolution (FWHM) of 0.3 nm. This is the spectral range where chlorophyll fluorescence is emitted and where the two atmospheric oxygen absorption bands (O2B and O2A, at 689 nm and 760 nm respectively) are used to measure it. The FLoX has an additional spectrometer measuring in visible and NIR-region (400– 950 nm) with a spectral resolution (FWHM) of 1.5 nm allowing extraction of different vegetation indices from the visible and near-infrared region.Metadata Information
Access constraint: OpenUse constraint:
Investigator
Name: Hans Tømmervik, Lennart NilsenOrganisation: NINA, UiT- The Arctic University of NorwayMetadata Author
Temporal extent
Start date: 2019-06-23T18:52:04Z
Child dataset(s)
SIOS INFRANOR (SIOS INFRANOR)
Institutions: NINA, UiT- The Arctic University of Norway, Norwegian Meteorological Institute / Arctic Data CentreShow more...
Abstract:
Observations made with FloX a spectroscopy system for the unsupervised retrieval of Sun-Induced-Fluorescence (SIF) and spectrally resolved reflectance. The instrument consists of two high performance spectrometers contained in a temperature controlled compartment. One fine resolution spectrometer (FLUO) covers the range from 650 nm to 800 nm observing the SIF signal within the O2A and O2B Fraunhofer Absorption lines. The second spectrometer (FULL) covers the range from 400 to 1000 nm. Each spectrometer measures the down-welling irradiance and the upwelling radiance using two optical fibers. A rugged weatherproof case and an autonomous acquisition protocol including data storage allows continuous observation of plant canopies over long periods. This is dataset contains the quality controlled and processed data. Raw data is published separately.License :
Access: Open