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(RESOLVED) ICE MASK - useful?

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bartbrashers

New member
I see that in some of the GHRSST flavors (from the JPL PODAAC) also contain SEAICE analyses. The MUR files also contain a SEAICE Mask.

Any advice on whether a SEAICE MASK would be useful in WRF would be appreciated. Should I include that mask in any WPS Intermediate files I make?
 
Hi,
This can be useful if you are doing runs at higher latitudes (near the poles), during winter months where there is a large amount of sea ice.
 
Hi Kelly,

Could you be more specific about how it might be useful? What fields in a METGRID.TBL would benefit from an ICEMASK?

Should one, for example, apply the MUR (1.3km) ICEMASK to the SEAICE data from e.g. ERA5 (~28km)? What bad behavior from WRF would that avoid?

Bart
 
Hi Bart,
Having the specific SEAICE mask field will let the model know which points are actually ice, as opposed to water points in the landmask. Additionally, if your simulation is long, and you have updated seaice mask data, then the mask will change with freezing and melting. This all helps later when the LSM is used. It can just give a more accurate representation of the environment, but it's not mandatory.
 
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