Dalei Hao, Ghassem R Asrar, Yelu Zeng, Xi Yang, Xing Li, Jingfeng Xiao, Kaiyu Guan, Jianguang Wen, Qing Xiao, Joseph A Berry, Min Chen
Remote sensing of solar-induced fluorescence (SIF) opens a new window for quantifying a key ecological variable, the terrestrial ecosystem gross primary production (GPP), because of the revealed strong SIF-GPP correlation. However, similar to many other remotely sensed metrics, SIF observations suffer from the sun-sensor geometry effects, which may have important impacts on the SIF-GPP relationship but remain poorly understood. Here we used remotely sensed SIF, globally distributed tower GPP data, and a mechanistic model to provide a systematic analysis...
February 9, 2021: Global Change Biology