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OCO-2 advances photosynthesis observation from space via solar-induced chlorophyll fluorescence

Sun, Y. and Frankenberg, C. and Wood, J. D. and Schimel, D. S. and Jung, M. and Guanter, L. and Drewry, D. T. and Verma, M. and Porcar-Castell, A. and Griffis, T. J. and Gu, L. and Magney, T. S. and Köhler, P. and Evans, B. and Yuen, K. (2017) OCO-2 advances photosynthesis observation from space via solar-induced chlorophyll fluorescence. Science, 358 (6360). Art. No. eaam5747. ISSN 0036-8075.

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Quantifying gross primary production (GPP) remains a major challenge in global carbon cycle research. Spaceborne monitoring of solar-induced chlorophyll fluorescence (SIF), an integrative photosynthetic signal of molecular origin, can assist in terrestrial GPP monitoring. However, the extent to which SIF tracks spatiotemporal variations in GPP remains unresolved. Orbiting Carbon Observatory-2 (OCO-2)’s SIF data acquisition and fine spatial resolution permit direct validation against ground and airborne observations. Empirical orthogonal function analysis shows consistent spatiotemporal correspondence between OCO-2 SIF and GPP globally. A linear SIF-GPP relationship is also obtained at eddy-flux sites covering diverse biomes, setting the stage for future investigations of the robustness of such a relationship across more biomes. Our findings support the central importance of high-quality satellite SIF for studying terrestrial carbon cycle dynamics.

Item Type:Article
Related URLs:
URLURL TypeDescription Materials
Sun, Y.0000-0002-9819-1241
Frankenberg, C.0000-0002-0546-5857
Wood, J. D.0000-0001-6422-2882
Schimel, D. S.0000-0003-3473-8065
Guanter, L.0000-0002-8389-5764
Verma, M.0000-0002-0722-8732
Griffis, T. J.0000-0002-2111-5144
Magney, T. S.0000-0002-9033-0024
Köhler, P.0000-0002-7820-1318
Additional Information:© 2017 American Association for the Advancement of Science. Received 11 December 2016; accepted 7 July 2017. A portion of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. A.P.-C. is funded by the Academy of Finland (Research Fellow grant 1288039). L. Gu and J.D.W. are supported by the U.S. Department of Energy Biological and Environmental Research program through Oak Ridge National Laboratory’s Terrestrial Ecosystem Science (TES) Science Focus Area (SFA). M.J. acknowledges support from the European Union H2020 Biosphere Atmosphere Change Index project (grant 640176). We thank the data providers of FLUXCOM and MODIS for their contribution. The OCO-2 SIF data set is publicly available at The CFIS SIF retrieval and GPP inferred at flux towers are available upon request.
Funding AgencyGrant Number
Academy of Finland1288039
Department of Energy (DOE)UNSPECIFIED
European Research Council (ERC)640176
Issue or Number:6360
Record Number:CaltechAUTHORS:20171016-145548969
Persistent URL:
Official Citation:OCO-2 advances photosynthesis observation from space via solar-induced chlorophyll fluorescence BY Y. SUN, C. FRANKENBERG, J. D. WOOD, D. S. SCHIMEL, M. JUNG, L. GUANTER, D. T. DREWRY, M. VERMA, A. PORCAR-CASTELL, T. J. GRIFFIS, L. GU, T. S. MAGNEY, P. KÖHLER, B. EVANS, K. YUEN SCIENCE13 OCT 2017
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:82387
Deposited By: Tony Diaz
Deposited On:17 Oct 2017 18:03
Last Modified:09 Mar 2020 13:19

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