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  1. J

    WRF and IEVA and adaptive time-stepping

    Great, thanks a lot for the quick response! I will test some more but so far it works great.
  2. J

    WRF and IEVA and adaptive time-stepping

    Dear WRF community, I want to use the IEVA time-stepping scheme together with the adaptive time-stepping feature in WRF-ARW. Could you please let me know if this works together? In my first tests it seems to run fine, but I am not sure if the IEVA was meant to be running together with adaptive...
  3. J

    Positive temperature bias in results after switching to WRF 4.4 using NoahMP

    I tested the Noah LSM and the differences between WRF 4.3.3 and WRF 4.4 are much less and I don't observe a general warm bias in T2. However, the outputs are still not the same and especially soil temperatures show a small warm bias of 0.2 K ... 0.3 K (but in this case it brings the 4.4 results...
  4. J

    Positive temperature bias in results after switching to WRF 4.4 using NoahMP

    Dear WRF community, I posted this already as a Github issue in the WRF repository, but I was asked to also post it here. After switching from WRF 4.3.3 to 4.4, the simulation output changed significantly: Large positive biases to T2 temperature from weather stations are found. The case is a...
  5. J

    Missing values

    I had the same error and in my case the ERA5 region I downloaded from the CDS servers was not large enough. I had selected "sub-region extraction" and, although I calculated the extent needed for my case, it seemed to be not large enough. After slightly increasing the region by changing the...
  6. J

    RE: Enquiry about SST Update in WRF

    Hi kwerner, thanks a lot for your quick and helpful reply. In your presentation slides, the first two links under SST do not work for me, as the servers are unavailable for a while already. I didn't know the last link which works well. I will give it a try. Best regards, Julian
  7. J

    RE: Enquiry about SST Update in WRF

    Hi, This is already helping me a lot. But I have 2 follow-up questions on SST in WRF: 1.) What is the best practise, if no external SST is available for 3 month simulations? Better use the GFS-FNL or is it no good at all? 2.) According to my default Vtable.GFS, the SST field of my GFS-FNL...
  8. J

    WRF wrror when changing ZR value using SLUCM

    Hi kwerner, thanks a lot for your quick response. I have already read this post as well and it solves the problem with WRF 1st layer thickness. I guess my solution of setting the namelist option dzbot=70 leads to a similar result, as it supposedly sets the first layer thickness while the...
  9. J

    WRF wrror when changing ZR value using SLUCM

    Dear all, I am quite new to using WRF and also a new member of this form, so I say hi to all of you and hope that you can help me out! I am responding to this post, as I am facing the same problem. I currently use WRF V4.15 and I also have some larger values of ZR in the URBPARM.TBL. With...
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