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Diurnal and seasonal dynamics of solar-induced chlorophyll fluorescence, vegetation indices, and gross primary productivity in the boreal forest

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Zoe Pierrat, Troy Magney, Nicholas C. Parazoo, Katja Grossmann, David R. Bowling, Ulli Seibt, Bruce Johnson, Warren Helgason, Alan Barr, Jacob Bortnik, Alexander Norton, Andrew Maguire, Christian Frankenberg, and Jochen Stutz, 2022-02-08, Diurnal and seasonal dynamics of solar-induced chlorophyll fluorescence, vegetation indices, and gross primary productivity in the boreal forest: Journal of Geophysical Research: Biogeosciences.

Summary

Remote sensing of solar-induced chlorophyll fluorescence (SIF) provides a powerful proxy for gross primary productivity (GPP). It is particularly promising in boreal ecosystems where seasonal downregulation of photosynthesis occurs without significant changes in canopy structure or chlorophyll content. The use of SIF as a proxy for GPP is complicated by inherent non-linearities due to both physical (illumination effects) and ecophysiological (light use efficiencies) controls at fine spatial (tower/leaf) and temporal (half-hourly) scales. To study the SIF-GPP relationship, we investigated the diurnal and seasonal dynamics of continuous tower-based measurements of SIF, GPP, and common vegetation indices at the Southern Old Black Spruce [...]

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  • National and Regional Climate Adaptation Science Centers
  • North Central CASC

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citationTypeJournal
journalJournal of Geophysical Research: Biogeosciences
parts
typeDOI
valuedoi.org/10.1029/2021JG006588

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