Wave-Ice Coupling for WW3v6.07 and E3SM v3 #7
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This PR is BFB with the previous baselines for the e3sm_wav_developer tests when using the switch_E3SM file and icnumerics=.false.
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Add Full Wave-Sea Ice coupling for wave-enabled E3SM simulations. This PR is bit-for-bit with standard E3SM configurations (no active waves), it only generates climate changing impacts if an active wave compset is used. This PR is the last of all PRs for the LRW (Low Res Wave) configuration of E3SM V3. This PR enables Full two-way coupling between WW3 and MPAS-SI. This PR adds the following new features to E3SM: -Floe Size Distribution in MPAS-SI -Floe Breaking and re-distribution of floe size distribution due to waves. Note: This PR requires the use of a new WW3 submodule that allow wave-ice coupling, as follows: WW3: E3SM-Project/WW3#7 [BFB] when no wave model is used. [NML]
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Add Full Wave-Sea Ice coupling for wave-enabled E3SM simulations. This PR is bit-for-bit with standard E3SM configurations (no active waves), it only generates climate changing impacts if an active wave compset is used. This PR is the last of all PRs for the LRW (Low Res Wave) configuration of E3SM V3. This PR enables Full two-way coupling between WW3 and MPAS-SI. This PR adds the following new features to E3SM: - Floe Size Distribution in MPAS-SI - Floe Breaking and re-distribution of floe size distribution due to waves. Note: This PR requires the use of a new WW3 submodule that allow wave-ice coupling, as follows: WW3: E3SM-Project/WW3#7 [BFB] when no wave model is used. [NML]
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This PR makes several changes to the WW3 code base for use in E3SM . The major changes include:
Adding a new 'switch' file with the sea ice settings for wave-sea ice coupling in E3SM (IC4, IS0).
Implementing the new wave attenuation scheme for waves in sea ice based on Meylan et al. (https://doi.org/10.1016/j.ocemod.2021.101779). In the E3SM branch of WW3: this setting is "IC4 Method 8".
This attenuation scheme takes into consideration damping in sea ice due to scattering, so scattering term must be turned off (IS0 used in new switch file) to avoid 'double counting' effects due to scattering in sea ice.
Lastly, this PR includes an update to the numerics calculation for IC4 based on calculations from Cecilia Bitz. It is numerically more accurate to determine the attenuation of waves in sea ice THEN determine the breaking of ice due to the damped waves. This is implemented through a new logical namelist parameter under the SIC4 namelist group. The new parameter is called "IC4_NUMERICS" and if this is set to "TRUE" the new numerics fix will be implemented (note this is only implemented for IC4)