Multiscale analyses of solar-induced florescence and gross primary production

Jeffrey D. Wood, Timothy J. Griffis, John M. Baker, Christian Frankenberg, Manish Verma, Karen Yuen

Research output: Contribution to journalArticlepeer-review

104 Scopus citations


Solar-induced fluorescence (SIF) has shown great promise for probing spatiotemporal variations in terrestrial gross primary production (GPP), the largest component flux of the global carbon cycle. However, scale mismatches between SIF and ground-based GPP have posed challenges toward fully exploiting these data. We used SIF obtained at high spatial sampling rates and resolution by NASA's Orbiting Carbon Observatory-2 satellite to elucidate GPP-SIF relationships across space and time in the U.S. Corn Belt. Strong linear scaling functions (R2 ≥ 0.79) that were consistent across instantaneous to monthly time scales were obtained for corn ecosystems and for a heterogeneous landscape based on tall tower observations. Although the slope of the corn function was ~56% higher than for the landscape, SIF was similar for corn (C4) and soybean (C3). Taken together, there is strong observational evidence showing robust linear GPP-SIF scaling that is sensitive to plant physiology but insensitive to the spatial or temporal scale.

Original languageEnglish (US)
Pages (from-to)533-541
Number of pages9
JournalGeophysical Research Letters
Issue number1
StatePublished - Jan 16 2017

Bibliographical note

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©2016. American Geophysical Union. All Rights Reserved.


  • GPP
  • OCO-2
  • SIF
  • eddy covariance
  • tall tower fluxes


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