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

被引：544

作者：

Sun, Y. ^{[1
,12
]}

Frankenberg, C. ^{[1
,2
]}

Wood, J. D. ^{[3
]}

Schimel, D. S. ^{[1
]}

Jung, M. ^{[4
]}

Guanter, L. ^{[5
]}

Drewry, D. T. ^{[1
,6
]}

Verma, M. ^{[7
]}

Porcar-Castell, A. ^{[8
]}

Griffis, T. J. ^{[9
]}

Gu, L. ^{[10
]}

Magney, T. S. ^{[1
]}

Kohler, P. ^{[2
]}

Evans, B. ^{[11
]}

Yuen, K. ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA

[2] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

[3] Univ Missouri, Sch Nat Resources, Columbia, MO USA

[4] Max Planck Inst Biogeochem, Jena, Germany

[5] German Res Ctr Geosci, Helmholtz Ctr Potsdam, Potsdam, Germany

[6] Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA USA

[7] Univ Michigan, Consulting Stat Comp & Analyt Res, Ann Arbor, MI 48109 USA

[8] Univ Helsinki, Dept Forest Sci, Opt Photosynthesis Lab, Helsinki, Finland

[9] Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA

[10] Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA

[11] Univ Sydney, Sch Life & Environm Sci, Fac Agr & Environm, Sydney, NSW, Australia

[12] Cornell Univ, Sch Integrat Plant Sci, Soil & Crop Sci Sect, Ithaca, NY USA

来源：

SCIENCE | 2017年 / 358卷 / 6360期

基金：

芬兰科学院; 欧盟地平线“2020”;

关键词：

GROSS PRIMARY PRODUCTION; SATELLITE MEASUREMENTS; CARBON-DIOXIDE; MODEL; CYCLE; CO2; PRODUCTIVITY; PERFORMANCE; MECHANISMS; RETRIEVAL;

D O I：

10.1126/science.aam5747

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：6

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