10m temperature or potential temperature

Hello professor, I want to get 10m temperature or 10m potential temperature, could you please give me some hint or help? Thank you.

I don't think you can obtain these variables at 10m height simply by interpolation. You may need to diagnose these variables based on similarity theory.
Please take a look at the codes phys/module_sf_sfcdiags.F, in which you can find the method to diagnose T2, Q2 based on similarity theory. I hope it can provide a reference for you to obtain variables at 10m.