Use of WRFv3 input in WRFv4

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michael3911
Posts: 5
Joined: Sun Nov 17, 2019 9:50 am

Use of WRFv3 input in WRFv4

Post by michael3911 » Mon May 10, 2021 8:15 am

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

Ming Chen
Posts: 1588
Joined: Mon Apr 23, 2018 9:42 pm

Re: Use of WRFv3 input in WRFv4

Post by Ming Chen » Wed May 12, 2021 10:41 pm

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.
WRF Help Desk

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