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

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. In conclusion, our findings support the central importance of high-quality satellite SIF for studying terrestrial carbon cycle dynamics.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [3] ;  [1] ;  [4] ; ORCiD logo [5] ; ORCiD logo [6] ; ORCiD logo [7] ; ORCiD logo [8] ; ORCiD logo [9] ; ORCiD logo [10] ; ORCiD logo [1] ; ORCiD logo [11] ; ORCiD logo [12] ; ORCiD logo [1]
  1. California Inst. of Technology (CalTech), La Canada Flintridge, CA (United States). Jet Propulsion Lab.
  2. California Inst. of Technology (CalTech), La Canada Flintridge, CA (United States). Division of Geological and Planetary Sciences; California Inst. of Technology (CalTech), La Canada Flintridge, CA (United States). Jet Propulsion Lab.
  3. Univ. of Missouri, Columbia, MO (United States). School of Natural Resources
  4. Max Planck Society, Jena (Germany). Max Planck Inst. for Biogeochemistry
  5. Helmholtz-Zentrum Potsdam (HZP), (Germany). German Research Centre for GeoSciences
  6. California Inst. of Technology (CalTech), La Canada Flintridge, CA (United States). Jet Propulsion Lab.; Univ. of California, Los Angeles, CA (United States). Joint Inst. for Regional Earth System Science and Engineering
  7. Univ. of Michigan, Ann Arbor, MI (United States). Consulting for Statistics, Computing, and Analytics Research
  8. Univ. of Helsinki (Finland). Optics of Photosynthesis Lab., Dept. of Forest Sciences
  9. Univ. of Minnesota, Saint Paul, MN (United States). Dept. of Soil, Water, and Climate
  10. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Environmental Science Division
  11. California Inst. of Technology (CalTech), La Canada Flintridge, CA (United States). Division of Geological and Planetary Sciences
  12. Univ. of Sydney, NSW (Australia). Faculty of Agriculture and Environment, School of Life and Environmental Science
Publication Date:
Grant/Contract Number:
AC05-00OR22725; 1288039; 640176
Type:
Accepted Manuscript
Journal Name:
Science
Additional Journal Information:
Journal Volume: 358; Journal Issue: 6360; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); National Aeronautic and Space Administration (NASA); European Union (EU)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 60 APPLIED LIFE SCIENCES
OSTI Identifier:
1399421

Sun, Ying, Frankenberg, C., Wood, Jeff D., Schimel, David S., Jung, M., Guanter, L., Drewry, D. T., Verma, M., Porcar-Castell, A., Griffis, T. J., Gu, Lianhong, Magney, T. S., Köhler, P., Evans, B., and Yuen, K.. OCO-2 advances photosynthesis observation from space via solar-induced chlorophyll fluorescence. United States: N. p., Web. doi:10.1126/science.aam5747.
Sun, Ying, Frankenberg, C., Wood, Jeff D., Schimel, David S., Jung, M., Guanter, L., Drewry, D. T., Verma, M., Porcar-Castell, A., Griffis, T. J., Gu, Lianhong, Magney, T. S., Köhler, P., Evans, B., & Yuen, K.. OCO-2 advances photosynthesis observation from space via solar-induced chlorophyll fluorescence. United States. doi:10.1126/science.aam5747.
Sun, Ying, Frankenberg, C., Wood, Jeff D., Schimel, David S., Jung, M., Guanter, L., Drewry, D. T., Verma, M., Porcar-Castell, A., Griffis, T. J., Gu, Lianhong, Magney, T. S., Köhler, P., Evans, B., and Yuen, K.. 2017. "OCO-2 advances photosynthesis observation from space via solar-induced chlorophyll fluorescence". United States. doi:10.1126/science.aam5747. https://www.osti.gov/servlets/purl/1399421.
@article{osti_1399421,
title = {OCO-2 advances photosynthesis observation from space via solar-induced chlorophyll fluorescence},
author = {Sun, Ying and Frankenberg, C. and Wood, Jeff D. and Schimel, David S. and Jung, M. and Guanter, L. and Drewry, D. T. and Verma, M. and Porcar-Castell, A. and Griffis, T. J. and Gu, Lianhong and Magney, T. S. and Köhler, P. and Evans, B. and Yuen, K.},
abstractNote = {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. In conclusion, our findings support the central importance of high-quality satellite SIF for studying terrestrial carbon cycle dynamics.},
doi = {10.1126/science.aam5747},
journal = {Science},
number = 6360,
volume = 358,
place = {United States},
year = {2017},
month = {10}
}