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IM1 WIP - ALT and excess_ice changes #3

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merged 7 commits into from
May 1, 2024
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Merges the additions of maximum ALT and excess_ice variables into institutional IM1 (NGEE Arctic permafrost inundation dynamics) branch.

Adds another variable of maxalt_ever and its index
following existing logic for calculating the
maximum active layer thickness (really thaw depth
as calculated) to date in the simulation.
Changes needed to get altmax_ever values to initialize correctly.
Fixes an issue where altmax_ever would be >30 meters regardless of
location/climate due to carrying forward the initial conditions.
Now includes a spinup_state flag so that it is set as 0 during spinup,
and then increases based on thaw depths over non-spinup cases.
Adds excess ground ice to the col_ws / column
water state data structure as a varaible needed for
NGEE-Arctic Phase 3 IM1 (improved inundation fraction).
Not yet connected to any of the new polygonal ground
subtypes of the vegetated columns.
Excess ground ice had been templated in these changes
as mass/area - changing to a volume/volume basis
(and therefore, now unitless).
Changes dimension on excess_ice parameter in water state types
from being one value per column to having dimensions
(columns, depth in soil)
@rfiorella rfiorella merged commit 86671b1 into lanl/IM1 May 1, 2024
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