Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Science (American Association for the Advancement of Science), 2017-10, Vol.358 (6360), p.189-189

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• 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.