Merge vegetation updates for IM3 #8
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Enables two major changes to the parameterization that calculates LAI burial by snow: a) pulls stocking density and taper parameters that influence vegetation height from hard-wired values in biogeochem/VegStructUpdateMod.F90 to allow to be specified on the surface file (per main/pftvarcon) and b) updates the LAI burial by snow rate from Wang and Zeng, 2007 (linear burial) to form proposed by Liston and Hiemstra, 2011 (linear or non-linear) burial. The Liston and Heimstra (2011) formulation introduces two new parameters: 1) bendresist, which specifies how resistant branches are to bending under snow loading (1 = no bending, lim->0 branches bend very rapidly) and 2) vegshape, which specifies how the shape of the vegetation crown affects how rapidly it is buried by snow (1 = paraboloid; 2 = hemispheroid). These new parameters can also be specified on surface file.
Temporary change, pending merge of IM4 updates. IM4 removed a lot of the hard-coded tests that looked for particular pfts by their assigned number. this required modifying the helper function "woody" to be a non-binary (i.e., now 0 = herbaceous, 1 = woody tree, 2 = woody shrub), but this updated function isn't available to IM3 currently.
rfiorella
force-pushed
the
rfiorella/IM3-shrub-bending
branch
from
6d93e6f
to
5252fa8
Compare
rfiorella
force-pushed
the
rfiorella/IM3-shrub-bending
branch
from
7bcad65
to
b79f2d0
Compare
rfiorella
force-pushed
the
rfiorella/IM3-shrub-bending
branch
from
b747356
to
b10afa9
Compare
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Merges changes made to VegStructUpdateMod.F90 that do the following:
By default: taper and stocking parameters are now set into pftvarcon.F90 to their original hard-coded values unless they are provided on a params file, bendresist and vegshape = 1 (reducing new expression of LAI burial to the existing linear relationship) unless different values are put on the input file.