Multiple Wind Field

[soilinkin]

Hi all

I have a model domain that will require 2 different wind fields to be applied to different parts of the domain. I understand that if I have a global wind field in the forcing file, the global wind will be interpolated and rotated to fit the whole domain; and if I have a fully gridded wind field then the model will use the fully gridded wind in the forcing file directly.

Is it possible that ROMS can read 2 wind fields from forcing file, and interpolate or assign the winds automatically or based on certain specification? Or do I still have to assign/interpolate the 2 wind fields and rotate to xi/eta direction for each grid cell, and generate fully gridded wind field in the forcing file?

Thanks ahead for anyone who can help.

[kate]

You can merge them before having ROMS read them and regrid/rotate them if they are both on lat/lon grids of the same resolution.

You can copy the ROMS code for reading then regrid/rotating winds to also read/rotate/regrid say Unwind2 and Vwind2. Then you can come up with some means of merging them inside the model, but you'll have to do that coding yourself.

[soilinkin]

You can merge them before having ROMS read them and regrid/rotate them if they are both on lat/lon grids of the same resolution.

You can copy the ROMS code for reading then regrid/rotating winds to also read/rotate/regrid say Unwind2 and Vwind2. Then you can come up with some means of merging them inside the model, but you'll have to do that coding yourself.

Thanks. I think it will be a bit easier to regrid with pre-processing.

Another question, is it ok to put regridded wind forcing and other global meteorology forcing in the same file as they are in different dimensions?

[kate]

Yes, it doesn't care if you have one file or five. The variable names and dimensions all have to be appropriate to their fields.