About interpolation of SST data

[robson_passos]

Dear, I am running WRF with 9 and 3 km nested grids. I am using the sst_update option, the SST data are from the ERA5 reanalysis (~31 km), however the ERA5 SST data are being horizontally interpolated using ERA5's own LAND mask, a variable called LANDSEA, which does This variable has a very coarse resolution in coastal areas when compared to the domain grids. I was wondering if the correct thing would not be to insert the option:

masked=land
interp_mask=landmask(1)

In the SST part of the metgrid. Because, in this way, the SST interpolation will be based on the landmask from the landuse data.

Could anyone let me know if this approach is correct?

Thank you very much in advance,
Robson

 

[Ming Chen]

Hi Robson,
Please take a look at the document here:
https://www2.mmm.ucar.edu/wrf/users/tutorial/presentation_pdfs/201601/wps_advanced.pdf
where you will find details how to process data with different mask.