Table 1.

Comparison Between Our Model and Previous Work That Incorporates SIF Into LSMs

References	Lee et al. (2015), Parazoo et al. (2020), and Raczka et al. (2019)	Thum et al. (2017) a	Koffi et al. (2015)	Cui et al. (2020) and Qiu et al. (2019)	Haynes et al. (2020)	Bacour et al. (2019)	Our model
LSM	CLM4/CLM4.5/CLM5	JSBACH	BETHY	BEPS	SiB4	ORCHIDEE	CLM5
Canopy representation	One‐layer canopy with sunlit and shaded portions	Three‐layer canopy without distinguishing sunlit and shaded portions	60‐layer canopy with sunlit and shaded portions (from SCOPE)	One‐layer canopy with sunlit and shaded portion	One‐layer canopy with sunlit and shaded portion	One‐layer canopy without sunlit and shaded portion	One‐layer canopy with sunlit and shaded portions
Leaf‐level fluorescence model	van der Tol et al. (2014) with different models for K N	van der Tol et al. (2014)	Fluspect (from SCOPE)	van der Tol et al. (2014)	van der Tol et al. (2014)	Directly simulates canopy‐level SIF with a parametric simplification of SCOPE and regulation of PSII fluorescence yield	A parametric simplification of the method used by SCOPE to be compatible with CLM
Clumping	None	None	None	Yes	None	None	Yes
Canopy scattering	Fixed scaling factor from leaf‐level to canopy‐level	Fixed attenuation coefficient	Radiative transfer (SCOPE)	Simplified radiative transfer/parameterized scaling factor	Fixed scaling factor	Parametric representation	Based on escape probability calculated with radiative transfer of scattered radiation
Viewing geometry	Fixed scaling factor from leaf‐level to canopy‐level	Fixed attenuation coefficient	Radiative transfer (SCOPE)	None/parameterized scaling factor	Fixed scaling factor	Parametric representation	Based on escape probability calculated with radiative transfer of scattered radiation

Note. SIF, solar‐induced chlorophyll fluorescence; LSM, land surface model.

^a Absolute magnitude of SIF is not simulated.