ATS Release 0.88

This release adds new stable functionality in:

• deformation, allowing volumetric change of grid cells to allow for a deforming mesh
• subgrid parameterizations in evaporation and the surface energy balance
• fixed major issues in assumptions about energy transport with evaporative fluxes. 0.87's evaporation model should not be trusted. While 0.86 is still a supported release, 0.87 should now be considered a deprecated/legacy release and will not be supported.

Additionally, there was significant cleanup of the surface energy balance in preparation for future work (hopefully for ATS-0.89?) on transpiration in temperate environments. These did not change physics, but changed code significantly.

ATS Release 0.87

Includes significant change through the concept of domains, ensuring that all (nearly all?) variables are now prefixed with a domain name. This allows all (nearly all?) PKs to be multiply instantiated on, for instance, subgrid models, column models, and other strategies. Also adds support for tracer transport, including surface and subsurface transport in icy soils. Also adds work on subsidence, including significant work on the deformation capabilities in ATS.

ats version 0.86, patch 3

This release adds a single key to the vegetation model, which allows the surface energy balance to use a shaded incoming shortwave instead of the total incoming shortwave. This is a workaround for a broader issue, which is that many PKs hard-code their dependencies. Many of these have already been refactored on dev, and that effort will continue on dev in a more comprehensive way.

ats-0.86.p2

Updates relative permeability to be calculated directly from liquid saturation instead of through capillary pressure. This makes life easier for ice saturation. It also fixes some bugs in rel perm smoothing under permafrost WRMs with freezing point depression.

Note that this results in a change in the input spec, where:

"smoothing interval width"

is renamed:

"smoothing interval width [saturation]"

and the units of this change from [Pa] to [-] (i.e. saturation increment). Typical values in input files should change from ~100-1000 to ~.01-.1