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Other random thoughts and questions What is the minimum set of generic crop classes we would need to match the current functionality in the models?
We would need to decide how to handle the EEMETRIC LAI adjusted Zom for corn, pop corn, sugarcane, hops (grapes are already broken out)? What about keeping a subset of the CDL classes for the most common crops and then grouping others?
Or maybe grouping on more general types, similar to what is done in the SIMS data.py
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A summary of how the crop type assets are being used in the various models.
The numbers listed below are CDL crop code unless otherwise specified.
SIMS
SIMS has support for custom Kc functions for every CDL crop class, but is currently being run using a single calculation for all the annual crops. Custom calculations are being applied for the following CDL classes.
SIMS is currently being masked for all non-ag pixels and does not use any of the NLCD like classes other than the fallow (61) and grass pasture (176).
EEMETRIC
For the most part, EEMETRIC does not use the crop type asset CDL values directly, and instead remaps the crop type values to the more general NLCD classes. The model does use the CDL codes to define an orchard/vineyard ("tall crop") mask, a "grapes" mask, and to define a custom class (86) for crops that get an additional LAI based adjustment.
TODO: Check if we need to add support for the table grapes (78) custom CDL code.
EEMETRIC does support remapping all of the NLCD like CDL codes in (63-65, 81-92, 111-195).
PTJPL
The crop type assets are only used in PTJPL to apply the Penman-Monteith adjustment factor.
The following CDL codes are used to define a "crop" mask:
Note, the wetland classes (190 and 195) are masked as crop only to get the PM adjustment.
Note, the 78 code is the custom table grapes class and not a standard CDL code.
GEESEBAL
GEESEBAL does not use the crop type assets, but does use the CDL to mask out non-ag areas for calibration pixel selection.
DisALEXI
DisALEXI does not use the crop type assets, but does use the NLCD for land use / land cover related adjustments.
SSEBop
SSEBop does not use the crop type assets.
Other Stuff
Geodatabase
The CDL crop type values are saved in the geodatabase and used to look up the crop type name for the web app. We will need to keep the geodatabase and web app teams in the loop if we make any changes to the values or codes.
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