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Use of WRFv3 input in WRFv4

Posted: Mon May 10, 2021 8:15 am
by michael3911
Hello,

I have used WRFv3.9.1.1 for a long time but I would like to move to WRFv4.2.x to test the new SMS-3DTKE scheme. I have a lot of input files for WRFv3.9.1.1 and I am wondering which ones could be used in WRFv4.2.x without any troubles. I have read here (viewtopic.php?f=40&t=5285) that using the wrfinput* files could impact model accuracy. Are there also some issues with WPS3.9.1 met_em* files or could I use them in WRFv4.2.x?

Thank you very much.
Michael

Re: Use of WRFv3 input in WRFv4

Posted: Wed May 12, 2021 10:41 pm
by Ming Chen
Michael,
I would suggest that you rerun REAL program to produce initial and boundary conditions. This is because since WRFV4, the vertical coordinate has been changed, which makes the initial/bounbday data of older version unacceptable.
The old met_em files from older WPS can still be used.