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@ARTICLE{Rascher:5622,
      author       = {Rascher, U. and Agati, G. and Alonso, L. and Cecchi, G. and
                      Champagne, S. and Colombo, R. and Damm, A. and Daumard, F.
                      and de Miguel, E. and Fernandez, G. and Franch, B. and
                      Franke, J. and Gerbig, C. and Gioli, B. and Gómez, J.A. and
                      Goulas, Y. and Guanter, L. and Gutiérrez-de-la-Cámara, Ó.
                      and Hamdi, K. and Hostert, P. and Jiménez, M. and
                      Kosvancova, M. and Lognoli, D. and Meroni, M. and Miglietta,
                      F. and Moersch, A. and Moreno, J. and Moya, I. and
                      Neininger, B. and Okujeni, A. and Ounis, A. and Palombi, L.
                      and Raimondi, V. and Schickling, A. and Sobrino, J.A. and
                      Stellmes, M. and Toci, G. and Toscano, P. and Udelhoven, T.
                      and van der Linden, S. and Zaldei, A.},
      title        = {{CEFLES}2: the remote sensing component to quantify
                      photosynthetic efficiency from the leaf to the region by
                      measuring sun-induced fluorescence in the oxygen absorption
                      bands},
      journal      = {Biogeosciences},
      issn         = {1726-4170},
      address      = {Katlenburg-Lindau [u.a.]},
      publisher    = {Copernicus},
      reportid     = {PreJuSER-5622},
      pages        = {1181 - 1198},
      year         = {2009},
      note         = {This work has been made possible by the funding support of
                      the ESA-projects (1) Technical Assistance for
                      Airborne/Ground Measurements in support of Sentinel-2
                      mission during CEFLES2 Campaign (ESRIN/Contract No.
                      20801/07/I-LG) (2) Technical Assistance for Airborne/Ground
                      Measurements in support of FLEX mission proposal during
                      CEFLES2 Campaign (ESRIN/Contract No. 20802/07/I-LG) (3) FLEX
                      Performance analysis and requirements consolidation study
                      (ESTEC/Contract No. 21264/07/NL/FF). Additional financial
                      and intellectual support was provided by the SFB/TR 32
                      "Patterns in Soil-Vegetation-Atmosphere Systems: Monitoring,
                      Modelling, and Data Assimilation" - project D2, funded by
                      the Deutsche Forschungsgemeinschaft (DFG).},
      abstract     = {The CEFLES2 campaign during the Carbo Europe Regional
                      Experiment Strategy was designed to provide simultaneous
                      airborne measurements of solar induced fluorescence and CO2
                      fluxes. It was combined with extensive ground-based
                      quantification of leaf- and canopy-level processes in
                      support of ESA's Candidate Earth Explorer Mission of the
                      'Fluorescence Explorer' (FLEX). The aim of this campaign was
                      to test if fluorescence signal detected from an airborne
                      platform can be used to improve estimates of plant mediated
                      exchange on the mesoscale. Canopy fluorescence was
                      quantified from four airborne platforms using a combination
                      of novel sensors: (i) the prototype airborne sensor AirFLEX
                      quantified fluorescence in the oxygen A and B bands, (ii) a
                      hyperspectral spectrometer (ASD) measured reflectance along
                      transects during 12 day courses, (iii) spatially high
                      resolution georeferenced hyperspectral data cubes containing
                      the whole optical spectrum and the thermal region were
                      gathered with an AHS sensor, and (iv) the first employment
                      of the high performance imaging spectrometer HYPER delivered
                      spatially explicit and multi-temporal transects across the
                      whole region. During three measurement periods in April,
                      June and September 2007 structural, functional and
                      radiometric characteristics of more than 20 different
                      vegetation types in the Les Landes region, Southwest France,
                      were extensively characterized on the ground. The campaign
                      concept focussed especially on quantifying plant mediated
                      exchange processes (photosynthetic electron transport, CO2
                      uptake, evapotranspiration) and fluorescence emission. The
                      comparison between passive sun-induced fluorescence and
                      active laser-induced fluorescence was performed on a corn
                      canopy in the daily cycle and under desiccation stress. Both
                      techniques show good agreement in detecting stress induced
                      fluorescence change at the 760 nm band. On the large scale,
                      airborne and ground-level measurements of fluorescence were
                      compared on several vegetation types supporting the scaling
                      of this novel remote sensing signal. The multi-scale design
                      of the four airborne radiometric measurements along with
                      extensive ground activities fosters a nested approach to
                      quantify photosynthetic efficiency and gross primary
                      productivity (GPP) from passive fluorescence.},
      keywords     = {J (WoSType)},
      cin          = {ICG-3 / ICG-2},
      ddc          = {570},
      cid          = {I:(DE-Juel1)ICG-3-20090406 / I:(DE-Juel1)VDB52},
      pnm          = {Terrestrische Umwelt / Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK407 / G:(DE-Juel1)FUEK406},
      shelfmark    = {Ecology / Geosciences, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000268623200004},
      url          = {https://juser.fz-juelich.de/record/5622},
}