Initial LES options for MPAS-Atmosphere#1404

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mgduda wants to merge 109 commits intoMPAS-Dev:developfrom

mgduda:atmosphere/initial_les

Commits on Jan 21, 2026

add new deformation coefficients to registries

Jimy Dudhia
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mgduda
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initialize new deformation coefficients

Jimy Dudhia
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mgduda
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add pointers for new coefficients

Jimy Dudhia
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mgduda
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add initialization of new arrays to zero

Jimy Dudhia
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pass new arrays to dyn_tend_work - compiles

Jimy Dudhia
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mgduda
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add deformation formulation to 2d Smagorinsky kdiff
mgduda
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bug fixes for computing the deformation coefficients for the 2D Smagorinsky scheme on Cartesian planes.

skamaroc
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mgduda
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Fixed error in w_x, w_y deformation coefficients.

skamaroc
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New module file for the dissipation routines.

skamaroc
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(1) Changes to the Makefile to compile new dissipation module.
mgduda
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Modifications to use mpas_atm_dimensions in the dissipation module

skamaroc
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Adding configuration string for the les models in the Registry.
mgduda
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Moved the dissipation term computations for u, theta and w from
mgduda
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Added initialization for convective boundary layer LES case.

skamaroc
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add calcalate_n2 routine (no functional code yet)

Jimy Dudhia
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add to arg list of calculate_n2

Jimy Dudhia
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add dry N^2

Jimy Dudhia
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fix theta to be in diag pool

Jimy Dudhia
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fix to use theta_m and qv instead of non-updated theta

Jimy Dudhia
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use local 1d theta array for efficiency

Jimy Dudhia
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add qtot drag term to thetav in dry case

Jimy Dudhia
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add cloudy conditions N2 calculation following WRF and Durran and Klemp (1982)

Jimy Dudhia
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remove thetav use

Jimy Dudhia
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add bn2 to output and commented out test call
mgduda
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added a 3D vertical eddy viscosity to the Registry for use in LES appliations.

skamaroc
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Added a horizontal eddy_viscosity array to go along with the vertical

skamaroc
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Bug fixes in the new LES mixing routines.

skamaroc
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added test calls to the new 3D LES schemes. This is currently hardwired
mgduda
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Bug fixes for the supercell test case using the 3D Smagorinsky LES model.

skamaroc
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switched signs of the vertical turbulent fluxes and vertical flux divergence

skamaroc
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Added new lower boundary conditions for LES simulations:
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Added a scalar variable named tke. This is the turbulent kinetic energy

skamaroc
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Added passive test of prognostic tke. Does not yet pass debug step.

skamaroc
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1.5 order prognostic tke mods. The prognostic tke does not feed back on the

skamaroc
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Added mixing routines for scalars within the LES models,

skamaroc
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Clean up and changes to run the prognostic tke les model. initial tests

skamaroc
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bug fixes and the addition of the Prandtl number formulation to the

skamaroc
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changed Prandtl number to 1/3 for LES simulations in the MPAS_constants module.

skamaroc
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implemented a perturbation coriolis term option for the LES cases.

skamaroc
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introduced the sheared PBL test case for the LES implementation, including setting

skamaroc
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Implemented SAS case sounding in LES initialization.

skamaroc
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Added the SAS LES time-varying lower boundary moisture and heat fluxes.
mgduda
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changed the initialization for the random potential temperature preturbation,

skamaroc
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Added a 3D diagnostic variable: the inverse Prandtl number used in the

skamaroc
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Threaded the 3D inverse Prandtl number through to the routines that need it

skamaroc
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ustm passed to u_dissipation_3d, diag_physics pool accessed

Jimy Dudhia
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ustm add pointer remove blanks in pool statement

Jimy Dudhia
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add les_model check to bypass pbl calls

Jimy Dudhia
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add time_of_day_seconds calculation (compiles)

Jimy Dudhia
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add flux_les_sas call in driver_sfclayer routine

Jimy Dudhia
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add fluxes to sfclay arguments and pass in

Jimy Dudhia
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pass heat flux args to sfclay1d

Jimy Dudhia
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copy specified fluxes to hfx and qfx before sfclay1d

Jimy Dudhia
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add MOL and BR calculations to sfclay1d

Jimy Dudhia
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add ustm drag in u_dissipation_3d les_sas_test

Jimy Dudhia
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skip hfx and qfx calcs in sfclay for specified_flux

Jimy Dudhia
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pass hfx and qfx to dissipation and use for les_sas

Jimy Dudhia
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comment out duplicate flux_les_sas in dissipiation module

Jimy Dudhia
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Set dummy TSK and UST=USTM (no VCONV)

Jimy Dudhia
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sign correction for MOL

Jimy Dudhia
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pass clock atm_do_timestep to physics_driver to driver_sfclayer

Jimy Dudhia
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put k loop around prandtl_inverse calc in dissipation

Jimy Dudhia
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bug fixes - fixed an uninitialized value in the w turbulent flux at the model top,

skamaroc
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hfx = heat_flux*rho*cp (factor added)

Jimy Dudhia
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add print for ust_edge

Jimy Dudhia
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initialize landmask, lu_index(ivgtyp), xland = 1

Jimy Dudhia
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change hardwired value of f - need to generize to use fEdge

Jimy Dudhia
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fix rdzw/rdzu for w dissipation, use fEdge instead of coriolis_value

Jimy Dudhia
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revert to hardwired f until fEdge can be used

Jimy Dudhia
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convert moisture_flux w'q' to surface flux qfx

Jimy Dudhia
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moisture_flux in dynamics should be w'q' = qfx/rho

Jimy Dudhia
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mgduda
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add commented fEdge line while still using hardwired f

dudhia
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initial prep to use les_test option

dudhia
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fix for compile

dudhia
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fixes to compile init_atmosphere

dudhia
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to compile atmosphere

dudhia
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fix small error in tke shear production and add surface heat flux

dudhia
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remove specialized physics code to leave dynonly les

dudhia
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mods to scale les-supercell case and remove surface fluxes from les_test

dudhia
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add seed tke = 0.1 at all points

dudhia
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fix scaling for x_period and y_period for cases

dudhia
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revert supercell a_scale to 1.0

dudhia
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add config_les_surface to registry and routines (not used yet)

dudhia
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clean up and reduce duplication

dudhia
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remove redundant dissipation routines

dudhia
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Merge with Bill Skamarock updated LES modules

dudhia
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add surface flux namelist options

dudhia
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Add explicit declarations of iCell, k, and p in the calculate_n2 routine
mgduda
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Commits on Jan 30, 2026

Avoid passing null pointers for ustm, hfx, and qfx to atm_compute_dyn_tend_work
mgduda
committed

Commits on Feb 25, 2026