Upgrade WAM mesh - Githubissues

NOAA-SWPC / WAM

Whole Atmosphere Model extension of the GFS

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Upgrade WAM mesh #17

Closed rmontuoro closed 4 years ago

rmontuoro commented 4 years ago

WAM exported fields used in WAM-IPE coupling are built on a simplified mesh, which can only represent WAM's original reduced Gaussian grid in index space. Spatial coordinates and connectivity are unavailable in such mesh, preventing further regridding of WAM's exported fields by a coupled component (e.g. SWIO).

The current mesh needs to be completed to include spatial coordinates and connectivity information.

rmontuoro commented 4 years ago

WAM's mesh was updated to include spatial coordinates and connectivity to fully describe the GSM reduced Gaussian grid. A plot of the updated mesh is included below:

ZhuxiaoLi66 commented 4 years ago

@rmontuoro So it is a combining of the octahedral mesh and the original mesh?

ZhuxiaoLi66 commented 4 years ago

@rmontuoro the other GFS with GSM also use the mesh you showed above? thanks.

twfang commented 4 years ago

Some results from the new SWIO from WAM. I think it looks reasonable.

swio_wam_neutral

rmontuoro commented 4 years ago

@rmontuoro So it is a combining of the octahedral mesh and the original mesh?

@ZhuxiaoLi66, the plot shows a mesh representation of the reduced Gaussian grid (based on NCEP's T62 grid) used by GFS and WAM GSMs. Such grid is built as an ESMF Mesh object since ESMF does not have the ability to represent a reduced Gaussian grid as a Grid object.

ZhuxiaoLi66 commented 4 years ago

@rmontuoro got it, thanks. @twfang could you please run 20130316-20130317 with the new SWIO? thanks.

twfang commented 4 years ago

@rmontuoro Is this issue completed? If yes, please close it. Thanks!

rmontuoro commented 4 years ago

PR #18 addressed this issue.