combined values

[rlmcdaniel]

Short description explaining the high-level reason for the new issue.

Current behavior

The combined HRU values (e.g. var_comb) are calculated in the write function of standalone sac. Since ngen provides its own write routine, these values are never calculated when running in ngen.

Expected behavior

Calculate the combined (weighted average) values in a way accessible by ngen.

Steps to replicate behavior (include URLs)

Screenshots

[andywood]

@rlmcdaniel -- good point, and this would not be a difficult fix (just moving some code around). Without it, a subgrid configuration of the model will not function in NextGen (though a single catchment lump will). If it's a priority, I can fix this in both sac-sma and snow-17.