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MESH-Model / MESH-Dev

This repository contains the official MESH development code, which is the basis for the 'tags' listed under the MESH-Releases repository. The same tags are listed under this repository. Legacy branches and utilities have also been ported from the former SVN (Subversion) repository. Future developments must create 'forks' from this repository.
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MMESH slope vs xslp #46

Open mee067 opened 4 months ago

mee067 commented 4 months ago

For MMESH, one of the required parameters is slope which named as such and provided as tile-based (in 1860_ME_ZT code). This slope is used in the adjustments of met forcing to the different tiles.

MESH also uses slope (named xslp or demslope or intslope) read from CLASS.ini or as a distributed field at the grid/sub level for the generation/routing of overland and sub-surface runoff components (WATROF) and possibly by other routines.

If MMESH is active, will slope be used for xlsp?

What if we still provide MMESH parameters while deactivating it?

mee067 commented 2 months ago

To document the status of this issue:

slope from MESH_Parameters.nc is used to set xslp when MMESH is active only and it is assigned at the tile level - not the sub/grid level as done in MESH_Parameters.r2c

To use it when MMESH is off, the field has to be renamed in the parameter file to be xslp

dprincz commented 1 month ago

I didn't think the xslp of MMESH is connected to that of CLASS. Neither is IntSlope from the db. I like to see things where a parameters describing the same thing are used consistently, but it isn't the case with these.

I suspect if demslope is mapped to tile values from MMESH inputs, it would get overwritten with grid-based values from the other parameter files, depending on the order in which those files are read.

mee067 commented 1 month ago

I always get confused with all those names for the same thing - or is it the same thing? please define xslp, demslope, and IntSlope.

Looking into MMESH code after posting the note above, MMESH assigns the "slope" field read from parameteres.nc to CLASS "xslp" at the tile level, but that will only occur when MMESH is active.

dprincz commented 1 month ago

They are independent variables representing the same thing.

mee067 commented 1 month ago

any documentation?