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

by Yuen, K. , Wood, J. D. , Evans, B. , Drewry, D. T. , Magney, T. S. , Guanter, L. , Gu, L. , Verma, M. , Schimel, D. S. , Frankenberg, C. , Griffis, T. J. , Köhler, P. , Sun, Y. , Jung, M. , Porcar-Castell, A.

in 60 APPLIED LIFE SCIENCES / Airborne sensing / Balances (scales) / Carbon / Carbon Cycle / Carbon dioxide / Carbon sources / Chlorophyll / Chlorophyll - analysis / Climate / Climate change / Covariance / Crop yield / Data acquisition / Drought / Dynamics / Ecological function / Ecological research / Ecosystem / Emission / Emissions / Empirical analysis / Environmental Monitoring / ENVIRONMENTAL SCIENCES / Extraterrestrial Environment / Fluorescence / Functionally gradient materials / Landscape / Light effects / Machinery and equipment / Missions / Observation / Observatories / Orthogonal functions / Photosynthesis / Primary production / Regression analysis / Remote sensing / RESEARCH ARTICLE SUMMARY / Satellite observation / Satellites / Spatial discrimination / Spatial resolution / Sunlight / Terrestrial ecosystems / Terrestrial environments / Vegetation / Vortices

2017

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

2017

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

2017

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Journal Article

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

Yuen, K.,

Wood, J. D.,

Evans, B.,

Drewry, D. T.,

Magney, T. S.,

Guanter, L.,

Gu, L.,

Verma, M.,

Schimel, D. S.,

Frankenberg, C.,

Griffis, T. J.,

Köhler, P.,

Sun, Y.,

Jung, M.,

Porcar-Castell, A.

2017

Overview

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.

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Publisher

American Association for the Advancement of Science,The American Association for the Advancement of Science,AAAS

Subject

60 APPLIED LIFE SCIENCES

/ Carbon