Inverse relationship between SIF and GPP in moist deciduous forest using CliMA Land output

Hi CliMA Land Team,

I'm currently using CliMA Land to simulate carbon and energy fluxes over a moist deciduous forest as part of my research. While evaluating the output, I've observed that the simulated Solar-Induced Chlorophyll Fluorescence (SIF) does not correlate well with the Gross Primary Production (GPP) in the summer months (roughly DOY 60–180).

Here I am attaching the link to open the graph
https://docs.google.com/document/d/18hgXlOcbbyf3hz1m9-xV2PP_8EFv9oIRciujCWpCumU/edit?tab=t.0

Any suggestions or guidance would be highly appreciated.
Thanks a lot for your great work on this model!