Update default allometry parameters for tree PFTs #1093
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| Task | Status |
|---|---|
| Tallo includes BAAD and has a lot of additional data. But BAAD has a deciduous v evergreen label which we need. I therefore cross reference by species name so we can use the extra Tallo data with the BAAD PFT designations. | Incomplete |
| I’m using the Martinez-Cano et al. 2019 height allometry, a power function for crown area, and the Chave et al. 2014 aboveground biomass allometry for all tree PFTs. | Incomplete |
| We could use the Chave et al. 2014 height allometry but it depends on the environmental factor E which would need to either be read in for each grid cell or calculated from forcing data. | Incomplete |
| The Chave et al. 2014 paper is based on more data than is in BAAD and it therefore makes sense to use parameters from that paper for tropical PFTs AGB allometries. | Incomplete |
| For wood density I found the mean value per PFT using @mpaiao's analysis of TRY plus other data sources. | Incomplete |
| Crown area fits are surprisingly linear even when data is binned by dbh to address issues of heteroskedasticity. | Incomplete |
| Some PFTs contain data from many species with quite different allometries. Ideally we would do some kind of weighting based on real abundances/spatial distributions of species, rather than have the fits be based on biased sampling. For now, I have not tried to correct this. If someone wants to do a more in depth analysis that would be great! | Incomplete |
| I’ve set the fates_allom_dbh_maxheight parameter to a large number since the Martinez-Cano function is a Michaelis-Menten and asymptotes and this parameter is therefore redundant (and potentially dangerous!). | Incomplete |
| I have not looked at shrubs or grasses. I believe updates for those PFTs are coming from other team members. | Incomplete |
| The in-code documentation has been updated with descriptive comments | Completed |
| The documentation has been assessed to determine if updates are necessary | Completed |
| FATES PASS/FAIL regression tests were run | Completed |
| Evaluation of test results for answer changes was performed and results provided | Completed |
| Technical Note update: | Incomplete |
| User's Guide update: | Incomplete |
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