LSP polar metrics definition

[LeonieLe]

Dear FORCE community,

I am using polar-based land surface phenology parameters to study the effects of drought on urban street trees. I am particularly interested in the integrals and amplitudes. Unfortunately, I have not been able to find a clear definition of the LSP parameters. For example, the difference between "green amplitude", "seasonal amplitude", and "peak amplitude" is not clear to me. Is there a reference paper that explains the different metrics?

Thanks in advance!

Leonie