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@INPROCEEDINGS{Rascher:190160,
      author       = {Rascher, Uwe and Alonso, Luis and Burkart, Andreas and
                      Cilia, Chiara and Cogliati, S. and Colombo, R. and Damm, A.
                      and Drusch, Matthias and Guanter, Luis and Hanus, Jan and
                      Hyvärinen, Timo and Julitta, Tommaso and Jussila, Jouni and
                      Kataja, Kari and Kraft, Stefan and Kraska, Thorsten and
                      Matveeva, Maria and Moreno, J. and Muller, Onno and
                      Panigada, C. and Pikl, Miroslav and Pinto, Francisco and
                      Prey, Lukas and Pude, Ralf and Rossini, Mikol and
                      Schickling, Anke and Schurr, Ulrich and Schuettemeyer, D.
                      and Verrelst, Jochem and Zemek, Frantisek and Cendrero, P.},
      title        = {{M}apping sun-induced fluorescence ({SIF}) for mechanistic
                      stress responses of vegetation using the high-performance
                      imaging spectrometer {H}y{P}lant},
      reportid     = {FZJ-2015-03091},
      year         = {2015},
      abstract     = {Variations in photosynthesis that are not related to
                      greenness of vegetation cannot be measured by traditional
                      optical remote sensing techniques and still cause
                      substantial uncertainties in predicting photosynthetic CO2
                      uptake rates and monitoring plant stress. Several activities
                      were underway to evaluate the sun-induced fluorescence
                      signal on the ground and on a coarse spatial scale using
                      space-borne imaging spectrometers. Intermediate-scale
                      observations using airborne-based imaging spectroscopy,
                      which are critical to bridge the existing gap between
                      small-scale field studies and global observations, are still
                      insufficient. Here we present validated maps of sun-induced
                      fluorescence in that critical, intermediate spatial
                      resolution, employing the novel airborne imaging
                      spectrometer HyPlant. HyPlant has an unprecedented spectral
                      resolution, which allows for the first time quantifying
                      sun-induced fluorescence fluxes in physical units according
                      to the Fraunhofer Line Depth Principle that exploits solar
                      and atmospheric absorption bands. Fluorescence maps show a
                      large spatial variability between different vegetation
                      types, which are not detected with classical remote sensing
                      approaches.It could be shown that different crop types
                      largely differ in emitting fluorescence that is related to
                      the activity of the photosynthetic machinery and allows
                      separating annual and perennial C3 and C4 crops and grasses.
                      Additionally, it could be shown in different case studies
                      that the two peak feature of sun-induced fluorescence
                      emission is related to (i) the total absorbed radiation by
                      photosynthetically active chlorophyll (far-RED peak) and
                      (ii) the functional status of photosynthesis and vegetation
                      stress (RED peak). Thus, the dynamic changes of the two
                      peaks of fluorescence code for structural and functional
                      variability within canopies. Sun-induced fluorescence thus
                      can be used to better understand and to monitor the dynamic
                      adaptations of the photosynthetic machinery of plants to the
                      ever changing environmental conditions. Sun-induced
                      fluorescence thus constitutes a novel and highly relevant
                      remote sensing signal to understand and manage our natural
                      and managed ecosystems in times of global change and to
                      facilitate a sustainable use of plants and plant resources.},
      month         = {Apr},
      date          = {2015-04-14},
      organization  = {9th EARSel Imaging Spectroscopy
                       Workshop, Luxembourg (Luxembourg), 14
                       Apr 2015 - 16 Apr 2015},
      subtyp        = {After Call},
      cin          = {IBG-2},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/190160},
}