title: Canopy near-infrared reflectance and terrestrial photosynthesis.
abstract: Global estimates of terrestrial gross primary production (GPP) remain highly uncertain, despite decades of satellite measurements and intensive in situ monitoring. We report a new approach for quantifying the near-infrared reflectance of terrestrial vegetation (NIRV). NIRVprovides a foundation for a new approach to estimate GPP that consistently untangles the confounding effects of background brightness, leaf area, and the distribution of photosynthetic capacity with depth in canopies using existing moderate spatial and spectral resolution satellite sensors. NIRVis strongly correlated with solar-induced chlorophyll fluorescence, a direct index of photons intercepted by chlorophyll, and with site-level and globally gridded estimates of GPP. NIRVmakes it possible to use existing and future reflectance data as a starting point for accurately estimating GPP.
authors.affiliation: Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305, USA.; Department of Earth System Science, Stanford University, Stanford, CA 94305, USA.
authors.forename: Grayson
authors.initials: G
authors.lastname: Badgley
authors.affiliation: Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305, USA.; Department of Earth System Science, Stanford University, Stanford, CA 94305, USA.
authors.forename: Christopher B
authors.identifier: 0000-0002-1684-8247
authors.initials: CB
authors.lastname: Field
authors.affiliation: Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305, USA.
authors.forename: Joseph A
authors.identifier: 0000-0002-5849-6438
authors.initials: JA
authors.lastname: Berry
mesh_terms: D002734:Chlorophyll / Q000378:metabolism*; D007259:Infrared Rays; D010788:Photosynthesis / Q000502:physiology*; D010944:Plants / Q000378:metabolism*
chemical_list: D002734:Chlorophyll
keywords: gross primary production; near-infrared reflectance; photosynthesis