Japan Geoscience Union Meeting 2016

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Oral

Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG22] Material Circulations in Land Ecosystems

Wed. May 25, 2016 10:45 AM - 12:15 PM 101B (1F)

Convener:*Tomomichi Kato(Research Faculty of Agriculture, Hokkaido University), Takashi Hirano(Research Faculty of Agriculture, Hokkaido University), Hisashi Sato(Department of Environmental Geochemical Cycle Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Ryuichi Hirata(National Institute for Environmental Studies), Chair:Tomomichi Kato(Research Faculty of Agriculture, Hokkaido University)

11:45 AM - 12:15 PM

[ACG22-10] Comparison of the simulated global the canopy scale sun-induced chlorophyll fluorescence and satellite-based SIF measurements

★Invited papers

*Hideki Kobayashi1, Wei Yang2, Kazuhito Ichii1 (1.Japan Agency for Marine-Earch Science and Technology, 2.Center for Environmental Remote Sensing, Chiba University)

Keywords:remote sensing, SIF, plant canopuy radiative transfer

Recent studies show that the terrestrial plant canopy sun-induced chlorophyll fluorescence (SIF) can be observed from satellites and the several SIF products have been produced. The potential application of these new products is being investigated. In this study, we performed a canopy and leaf level radiative transfer simulation to understand how leaf-level SIFs from sunlit and shaded leaves contribute to the canopy scale SIF that is observed by satellites. We also investigated how the sunlit and shaded SIF contributions varied with the observed angles. The results showed the large variations in sunlit and shaded leaf contribution regarding the observation angles. In particular, the SIF observation near the solar disc contains more sunlit leaf SIF information. We also found that the SIF emission after multiple scattering within canopy cannot be negligible.