4th Sep.

Today, I read two very old papers which were published in 2000.

I'm very surprised people started to detect SiF signal such a long time ago.

But because of technique limitation, when people had no ability to create high/hyper spectral resolution sensors to observe plants, studies at that time mainly focus on actively human induced chlorophyll fluorescence. I have to say I always cant understand that kind of experiments, maybe because I refuse to accept information about it.

Paper I want to introduce today is: Pablo J. Zarco-Tejada, John R. Miller and etc. Chlorophyll Fluorescence Effects on Vegetation Apparent Reflectance: I. Leaf-Level Measurements and Model Simulation, Remote Sensing of Environment.2000, 74:582-595.

This paper quantitatively proved impacts of chlorophyll fluorescence on apparent reflectance at leaf level. Chlorophyll fluorescence here was derived from PAM.