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Introducing blowing snow impact on visibility #823
Conversation
@AlexanderRichert-NOAA Can you help us to fix this intel build failure in CI? Thanks! |
@JongilHan66 Please review visibility calculation enhancement in this PR and let me know your opinion on whether this change should be implemented in GFS V17. |
I am ok to implement it in gfsv17. Please also check it with Fanglin. |
@yangfanglin Do you have comments on this enhancement implemented in GFS V17? |
I am OK with this enhancement. @EricJames-NOAA Can you attach a copy of Tim Corrie's presentation and your evaluation ppt to this PR for us to understand what the expected impact is ? |
For the Intel failure, the fix is to specify versions for the compilers when doing the installation with apt, i.e., 'intel-oneapi-compiler-fortran-2023.2.1 intel-oneapi-compiler-dpcpp-cpp-and-cpp-classic-2023.2.1'. |
@AlexanderRichert-NOAA My understand is the changes would in intel.yml? |
@WenMeng-NOAA yes exactly |
Here are some slides comparing the visibility diagnostic with and without the effect of blowing snow for a recent case in North Dakota. We have some other evaluations, but they are mostly qualitative comparisons. |
Thanks, Eric. Looks like the impact is significant. |
The UPP RT was conducted at /u/wen.meng/ptmp on Hera. The changes are
The main change is in visibility field (VIS), such as:
@FernandoAndrade-NOAA You may start the UPP RT on Hera and Orion. |
Most of my Hera RTs seem to match size and changes in VIS to your tests, however I'm seeing a size discrepancy with the gfs test. The changes seem expected however the diff is 3444 unlike your 3495. I'm not able to look at your test directory given, if you'd like to compare to mine it's in |
@WenMeng-NOAA Orion seems to match your results on Hera. Hercules had a fatal error occur within 3drtma and I did not see the expected VIS change within NATLEV:
Both hera and hercules are running into errors with gfs:
It looks like there may be an issue finding pgbfile, pgbfile.grib2, fluxfile, and goesfile:
|
I don't see any discrepancies between your testing at /scratch2/NAGAPE/epic/Fernando.Andrade-maldonado/regression-tests/upp/823/UPP/ci/rundir/upp-HERA and my testing at /scratch1/NCEPDEV/stmp2/Wen.Meng on Hera. I would think the UPP RT on Hera is fine. |
As discussed in the weekly CM meeting, we will be proceeding with the merge process as Orion and Hera RT results were as expected. Two separate issues will be created for the Hera missing files error and the Hercules fatal errors. Awaiting WRFPOST.f changelog comment before approval. |
Thanks for the reminder! I added a change log entry in WRFPOST.f |
The UPP RTs were completed on WCOSS2, Hera and Orion. There will be baseline recreation for gfs, fv3r, 3drtma, rap, hrrr and nmmb with this PR. This PR is ready for merging. |
Introducing blowing snow impact on visibility (NOAA-EMC#823)
Introducing blowing snow impact on visibility (NOAA-EMC#823)
This PR adds the blowing snow effect within the GSL surface visibility diagnostic. The code has been running in parallel in the GSL RRFS-B over the past ~8 months, with side-by-side visibility output with and without the impact of blowing snow, allowing evaluation for some cases.
The code was developed by Tim Corrie of the University of Wyoming as part of his MS project.