Description Usage Arguments Details Value
The function winnow_BCs
removes correlated basin characteristics
and aggregate monthly variables to seasonal variables.
1 | winnow_BCs(BCs, BC.code6.remflg = F)
|
BCs |
A data frame of basin characteristics from
|
BC.code6.remflg |
(optional) A logical value indicating if the code-6
variables, those derived from an uncalibrated hydrologic model,
should be removed. The defautl is |
Reads in the "clean" basin characteristics (BCs) produced by
clean_BCs.R
and then "winnows" them by:
1."pre-removing" various highly correlated or unlikely to be useful BCs, including "SITE", "STD", "CDL", forest NLCD variables other than total forest (FORESTNLCD06).
2.
Add a few BCs are combinations of existing BCs, including:
(a)July - Jan monthly temperatures (then all other monthly temperatures are removed; annual average is also retained.)
(b)Phase of annual cycle of monthly water balance WB (WB5100...) variables, then delete monthly WB variables but retain annual WB variable WB5100_ANN_MM.
(c)Combining monthly PPT variables into quarterly (DJF, MAM, JJA, SON)
(d)Combining woody and emergent NLCD fractions to a single total wetland fraction; also creating a NLCD total wetland plus NLCD water variable
(e)Adding ELEV_RANGE_M_BASIN variable as difference of ELEV_MAX_M_BASIN and ELEV_MIN_M_BASIN
A matrix of basin characteristics, with some removed.
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