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Create summary and graphics looking at rotations, slope per OFE #57

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akrherz opened this issue Feb 8, 2018 · 5 comments
Open

Create summary and graphics looking at rotations, slope per OFE #57

akrherz opened this issue Feb 8, 2018 · 5 comments
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@akrherz
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akrherz commented Feb 8, 2018

Dave would like me to look into per OFE numbers and summarize by rotations. Since we have a bagillion rotation codes, the summation would generalize these by the number of years in the code in an annual vs perennial code. So a CBCBCB rotation would be 6a0p and so on...

He wants this plot replicated
soilloss

@akrherz akrherz self-assigned this Feb 8, 2018
@dejames52
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Daryl...Yes, I think you got this right...so above would be a 6/0 and a 3/3

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akrherz commented Feb 9, 2018

@dejames52 and I discussed this matter more on the phone this morning and went over some mechanistic things.

  1. We'll evaluate the six year period of 2011 through 2016, and perhaps include 2017 later once its rotation is updated.
  2. Here's a table with the DEP rotation codes and how they will be mapped to the generalized 'annual' / 'perennial' class, dave should be able to edit it.
Code Label Use for Analysis? Mapping
B Soy yes annual
F Forest no
G Sorghum yes annual
P Pasture yes perennial
C Corn yes annual
R Other Row Crops yes annual
T Water (Flooded) no
U Urban no
X Unclassified no
I Idle no
L Double Crop yes annual
W Wheat yes annual
N Small Grain yes annual

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dejames52 commented Feb 9, 2018 via email

@dejames52
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dejames52 commented Feb 9, 2018 via email

@akrherz
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akrherz commented Apr 11, 2018

Today's giant rabbit hole related to this issue revolves around attempting to figure out what to do with the OFE sedleave column. It is difficult to get this value to line up with the env output files. The unit conversion is the same though as we need to go from kg/m to kg/m2, which typically means dividing by some length. But what length?

This lead to a while goose chase with an example flowpath. It turns out, that when a flowpath meanders on flat ground, the reported slope length gets longer than it actually is via a straight line, which is what WEPP assumes. It also turns out that this case is very limited to a number of flowpaths well less than 1%.

akrherz added a commit that referenced this issue Apr 17, 2018
akrherz added a commit that referenced this issue Apr 17, 2018
akrherz added a commit that referenced this issue Apr 30, 2018
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