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Litnovsky A, Matveeva M, Rudakov DL, Chrobak CP, Allen SL, Leonard AW, Taylor PL, Wong CPC, Fitzpatrick BWN, Davis JW, Haasz AA, Stangeby PC, Breuer U, Philipps V, MÖller S. Impact of Thermo-Oxidative Wall Conditioning on the Performance of Diagnostic Mirrors for ITER. Fusion Science and Technology 2017. [DOI: 10.13182/fst12-a14119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. Litnovsky
- Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jülich GmbH Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jülich, Germany
| | - M. Matveeva
- Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jülich GmbH Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jülich, Germany
| | - D. L. Rudakov
- University of California, San Diego, La Jolla, California 92093-0417, USA
| | - C. P. Chrobak
- General Atomics, San Diego, California 92186-5608, USA
| | - S. L. Allen
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - A. W. Leonard
- General Atomics, San Diego, California 92186-5608, USA
| | - P. L. Taylor
- General Atomics, San Diego, California 92186-5608, USA
| | - C. P. C. Wong
- General Atomics, San Diego, California 92186-5608, USA
| | - B. W. N. Fitzpatrick
- University of Toronto, Institute for Aerospace Studies, Toronto, Ontario M3H 5T6, Canada
| | - J. W. Davis
- University of Toronto, Institute for Aerospace Studies, Toronto, Ontario M3H 5T6, Canada
| | - A. A. Haasz
- University of Toronto, Institute for Aerospace Studies, Toronto, Ontario M3H 5T6, Canada
| | - P. C. Stangeby
- University of Toronto, Institute for Aerospace Studies, Toronto, Ontario M3H 5T6, Canada
| | - U. Breuer
- Central Division of Analytical Chemistry, Forschungszentrum Jülich, D 52425 Jülich, Germany
| | - V. Philipps
- Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jülich GmbH Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jülich, Germany
| | - S. MÖller
- Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jülich GmbH Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jülich, Germany
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Rascher U, Alonso L, Burkart A, Cilia C, Cogliati S, Colombo R, Damm A, Drusch M, Guanter L, Hanus J, Hyvärinen T, Julitta T, Jussila J, Kataja K, Kokkalis P, Kraft S, Kraska T, Matveeva M, Moreno J, Muller O, Panigada C, Pikl M, Pinto F, Prey L, Pude R, Rossini M, Schickling A, Schurr U, Schüttemeyer D, Verrelst J, Zemek F. Sun-induced fluorescence - a new probe of photosynthesis: First maps from the imaging spectrometer HyPlant. Glob Chang Biol 2015; 21:4673-84. [PMID: 26146813 DOI: 10.1111/gcb.13017] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Accepted: 05/26/2015] [Indexed: 05/27/2023]
Abstract
Variations in photosynthesis still cause substantial uncertainties in predicting photosynthetic CO2 uptake rates and monitoring plant stress. Changes in actual photosynthesis that are not related to greenness of vegetation are difficult to measure by reflectance based optical remote sensing techniques. Several activities are 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 the first 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. Maps of sun-induced fluorescence show a large spatial variability between different vegetation types, which complement classical remote sensing approaches. Different crop types largely differ in emitting fluorescence that additionally changes within the seasonal cycle and thus may be related to the seasonal activation and deactivation of the photosynthetic machinery. We argue that sun-induced fluorescence emission is related to two processes: (i) the total absorbed radiation by photosynthetically active chlorophyll; and (ii) the functional status of actual photosynthesis and vegetation stress.
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Affiliation(s)
- U Rascher
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - L Alonso
- Department of Earth Physics and Thermodynamics, University of Valencia, Dr Moliner 50 46100 Burjassot, Valencia, Spain
| | - A Burkart
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - C Cilia
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
- Remote Sensing of Environmental Dynamics Lab, DISAT, Università degli Studi Milano-Bicocca, Milano, Italy
| | - S Cogliati
- Remote Sensing of Environmental Dynamics Lab, DISAT, Università degli Studi Milano-Bicocca, Milano, Italy
| | - R Colombo
- Remote Sensing of Environmental Dynamics Lab, DISAT, Università degli Studi Milano-Bicocca, Milano, Italy
| | - A Damm
- Remote Sensing Laboratories, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - M Drusch
- European Space Agency (ESA), ESTEC, Keplerlaan 1, 2200 AG, Noordwijk, the Netherlands
| | - L Guanter
- Institute for Space Sciences, Free University of Berlin, Carl-Heinrich-Becker-Weg 6-10, 12165, Berlin, Germany
| | - J Hanus
- Global Change Research Centre AS CR, Bělidla 986/4a, 603 00, Brno, Czech Republic
| | - T Hyvärinen
- Specim Spectral Imaging Ltd., Teknologiantie 18A, 90590, Oulu, Finland
| | - T Julitta
- Remote Sensing of Environmental Dynamics Lab, DISAT, Università degli Studi Milano-Bicocca, Milano, Italy
| | - J Jussila
- Specim Spectral Imaging Ltd., Teknologiantie 18A, 90590, Oulu, Finland
| | - K Kataja
- Specim Spectral Imaging Ltd., Teknologiantie 18A, 90590, Oulu, Finland
| | - P Kokkalis
- Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, 15236, Athens, Greece
| | - S Kraft
- European Space Agency (ESA), ESTEC, Keplerlaan 1, 2200 AG, Noordwijk, the Netherlands
| | - T Kraska
- Field Lab Campus Klein-Altendorf, Agricultural Faculty, University of Bonn, Klein-Altendorf 3, 53359, Rheinbach, Germany
| | - M Matveeva
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - J Moreno
- Department of Earth Physics and Thermodynamics, University of Valencia, Dr Moliner 50 46100 Burjassot, Valencia, Spain
| | - O Muller
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - C Panigada
- Remote Sensing of Environmental Dynamics Lab, DISAT, Università degli Studi Milano-Bicocca, Milano, Italy
| | - M Pikl
- Global Change Research Centre AS CR, Bělidla 986/4a, 603 00, Brno, Czech Republic
| | - F Pinto
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - L Prey
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - R Pude
- Field Lab Campus Klein-Altendorf, Agricultural Faculty, University of Bonn, Klein-Altendorf 3, 53359, Rheinbach, Germany
| | - M Rossini
- Remote Sensing of Environmental Dynamics Lab, DISAT, Università degli Studi Milano-Bicocca, Milano, Italy
| | - A Schickling
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - U Schurr
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany
| | - D Schüttemeyer
- European Space Agency (ESA), ESTEC, Keplerlaan 1, 2200 AG, Noordwijk, the Netherlands
| | - J Verrelst
- Department of Earth Physics and Thermodynamics, University of Valencia, Dr Moliner 50 46100 Burjassot, Valencia, Spain
| | - F Zemek
- Global Change Research Centre AS CR, Bělidla 986/4a, 603 00, Brno, Czech Republic
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