NGEET / fates-docs

Documentation source code for the FATES model
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typo on page 29 #22

Open rgknox opened 4 years ago

rgknox commented 4 years ago

From a slack discussion with @adrifoster :

Hi Rosie & Ryan, I'm not sure if this is the correct/most updated place for the FATES doc (https://readthedocs.org/projects/fates-docs/downloads/pdf/latest/) but just FYI I found a typo on page 29: "If 𝐴𝑓 is greater than a threshold value 𝐴𝑡, 𝑆𝑐 is increased by a small increment 𝑖. The threshold 𝐴𝑡 is, hypothetically, the canopy fraction at which light competition begins to impact on tree growth. This is less than 1.0 owing to the non-perfect spatial spacing of tree canopies. If 𝐴𝑓,𝑐𝑙 is greater than 𝐴𝑡, then 𝑆𝑐 is reduced by an increment 𝑖, to reduce the spatial extent of the canopy, thus."

I think the first "If A_f is.." should be "If A_f is less than" if I'm reading the code/equations correctly.

rosiealice commented 4 years ago

Indeed. Good catch @adrifoster

I think the correction should probably be (notwithstanding that your's is also logically correct) "If Af is learger than is greater than a threshold value 𝐴𝑡, 𝑆𝑐 is decreased by a small increment 𝑖." Because that is generally the order in which things happen. As in, the canopy expands and then Sc gets smaller first..

adrifoster commented 4 years ago

Okay cool, then the last sentence should also be changed to:

"If 𝐴𝑓,𝑐𝑙 is less than than 𝐴𝑡, then 𝑆𝑐 is increased by an increment 𝑖" and the "to reduce the spatial extent of the canopy" can be moved to the first sentence?