Search found 1577 matches

by Ming Chen
Fri Jul 23, 2021 9:37 pm
Forum: wrf.exe
Topic: initial time cannot be plotted?
Replies: 3
Views: 985

Re: initial time cannot be plotted?

Stella,
Would you please post your question to the pstprocessing forum:

viewforum.php?f=26

Thanks.
by Ming Chen
Fri Jul 23, 2021 9:33 pm
Forum: wrf.exe
Topic: Long simulation time on some of the time-steps
Replies: 3
Views: 23

Re: Long simulation time on some of the time-steps

Chang,
I believe this issue is related to radiation. Can you try the option: radt = 9, 9, 9 and see whether the performance is better?
Please keep me updated. Thanks.
by Ming Chen
Fri Jul 23, 2021 9:28 pm
Forum: WRF Physics
Topic: Turning off sensible heat flux
Replies: 7
Views: 604

Re: Turning off sensible heat flux

San,
You may try to set sensible heat flux to zero either in the surface scheme you use, or set it to zero in surface driver. I suppose either way howled work.
Please try and keep me updated about the results.
by Ming Chen
Fri Jul 23, 2021 9:22 pm
Forum: real.exe
Topic: spec_bdy_width question
Replies: 1
Views: 10

Re: spec_bdy_width question

Stefan,
I would expect different results when the relax_zone and spec_zone are different in different experiments. I have no answer to your question at present. I will talk to ur expert and get back to you soon. Thanks for your patience.
by Ming Chen
Fri Jul 23, 2021 9:10 pm
Forum: Idealized Cases
Topic: xland is overwritten in idealized case
Replies: 1
Views: 4

Re: xland is overwritten in idealized case

Xiang-Yu,
Is it changed in wrfinput or in wrfout?
by Ming Chen
Fri Jul 23, 2021 9:04 pm
Forum: Idealized Cases
Topic: ideal: error opening wrfinput for writing
Replies: 5
Views: 42

Re: ideal: error opening wrfinput for writing

It is good to know the code can be compiled.. Thanks for the update.
by Ming Chen
Fri Jul 23, 2021 8:54 pm
Forum: Special Running Options
Topic: Lake SST
Replies: 2
Views: 9

Re: Lake SST

Hi Jiali,
I just have one question: when you ungrib ERA5 data, did you include the surface invariant datafile? This is more like an issue that the landsea mask is not available in your input data.
By the way, where did you download the ERA5 data?
by Ming Chen
Fri Jul 23, 2021 8:51 pm
Forum: Special Running Options
Topic: spectral nudging (fdda=2) in nested domains
Replies: 1
Views: 15

Re: spectral nudging (fdda=2) in nested domains

Vinod,
I am a little bit confused here. Would you please clarify your question?
by Ming Chen
Fri Jul 23, 2021 8:48 pm
Forum: Special Running Options
Topic: Restart without wrfrst files
Replies: 1
Views: 8

Re: Restart without wrfrst files

Xiang-Yu,
There is no way to restart WRF from a time when no wrfrs file exists. You may restart from the latest time that wrfrst exists, and continue from there.
by Ming Chen
Fri Jul 23, 2021 8:44 pm
Forum: Special Running Options
Topic: Ingesting high-resolution terrain and landuse input in a moving nest run
Replies: 2
Views: 12

Re: Ingesting high-resolution terrain and landuse input in a moving nest run

Would you please set sf_surface_physics = 1, then try again? Thanks.
by Ming Chen
Wed Jul 21, 2021 7:17 pm
Forum: Miscellaneous WRF
Topic: How to find the top level of the planetary boundary layer in WRF?
Replies: 1
Views: 12

Re: How to find the top level of the planetary boundary layer in WRF?

Hi, You may look at the height of each model levels by (ph + phb)/9.8, then find the one that is closest to PBLLH. Using that level as the approximate level of PBLH. Does this meet your requirement? For your 2nd question, how to calculate CO2 concentration based on PBLH, I don't have an answer. We a...
by Ming Chen
Mon Jul 19, 2021 10:56 pm
Forum: wrf.exe
Topic: How do I add vertical profiles of number concentrations in tslist?
Replies: 3
Views: 44

Re: How do I add vertical profiles of number concentrations in tslist?

Arthur, Would you please change the code from: grid%ts_qnrain_profile(n,i,k) = grid%moist(ix,k,iy,p_qnr) to grid%ts_qnrain_profile(n,i,k) = grid%scalar(ix,k,iy,p_qnr) (also the same changes for other number concentrations such as QNI, QNS, etc.) Then recompile the codes? Please let me know whether y...
by Ming Chen
Mon Jul 19, 2021 10:45 pm
Forum: wrf.exe
Topic: WRF crashes soon after execution
Replies: 1
Views: 11

Re: WRF crashes soon after execution

Hi Amber,
Would you please use the VEGPAM.TBL I attached here, and rerun the case? Please let me know whether it works.
Ming
by Ming Chen
Mon Jul 19, 2021 10:40 pm
Forum: WRF Physics
Topic: Turning off surface heat fluxes
Replies: 1
Views: 8

Re: Turning off surface heat fluxes

Hi San,
WRF doesn't provide this option.
by Ming Chen
Mon Jul 19, 2021 10:35 pm
Forum: WRF Physics
Topic: Ofline Code BEP+BEM Scheme to calibrate
Replies: 1
Views: 6

Re: Ofline Code BEP+BEM Scheme to calibrate

Hi Joice, We don't have the offline version of the BEP-BEM scheme.Below are the two papers for these schemes. Probably you can check with the developer? Salamanca, F., and A. Martilli, 2010: A new building energy model coupled with an urban canopy parameterization for urban climate simulations––part...
by Ming Chen
Mon Jul 19, 2021 7:11 pm
Forum: wrf.exe
Topic: Run real.exe again for restart run?
Replies: 8
Views: 60

Re: Run real.exe again for restart run?

Hi,
When you run real.exe, if set_update is activated, you will produce wrfbdy and also wrflowinput files. Once set_update = 1, you need to save both wrfbdy and wrflowinput for the restart run.
by Ming Chen
Mon Jul 19, 2021 7:08 pm
Forum: real.exe
Topic: real.exe': nested run - malloc(): smallbin double linked list corrupted:
Replies: 19
Views: 119

Re: real.exe': nested run - malloc(): smallbin double linked list corrupted:

Hi, I looked at your namelist.wps and nameless.input. There is only one issue I am concerned, that you set stand_lon different to ref_lon. It is recommended to set them to be the same. However, I don't think this is the reason that REAL cannot run. Besides, your post indicated that you run with pola...
by Ming Chen
Wed Jul 14, 2021 8:29 pm
Forum: Idealized Cases
Topic: ideal: error opening wrfinput for writing
Replies: 5
Views: 42

Re: ideal: error opening wrfinput for writing

Hi Xiang-Yu, I just try to compile the JOINER program and it works for both GNU and INTEL. By the way, I compile in serial mode. I use intel/19.0.5 and netcdf/4.7.4 is installed in my machine. Can you try the above versions of intel and netCDF , and compile the code in serial mode? Please let me kno...
by Ming Chen
Wed Jul 14, 2021 8:11 pm
Forum: real.exe
Topic: real.exe': nested run - malloc(): smallbin double linked list corrupted:
Replies: 19
Views: 119

Re: real.exe': nested run - malloc(): smallbin double linked list corrupted:

@ odongoronieplanks
Please clarify the issues you have. Thanks.
by Ming Chen
Wed Jul 14, 2021 8:10 pm
Forum: real.exe
Topic: real.exe': nested run - malloc(): smallbin double linked list corrupted:
Replies: 19
Views: 119

Re: real.exe': nested run - malloc(): smallbin double linked list corrupted:

Alex, " input_from_file = True, True," indicates that REAL will produce wrfinput_d01 and wrfinpout_d02 for the nested case. " input_from_file = True, False," indicates that REAL will only produce wrfinput_d01. wrfinpout_d02 will be derived from wrfinput_d01 once the model starts running. The former ...
by Ming Chen
Wed Jul 14, 2021 8:02 pm
Forum: wrf.exe
Topic: Long simulation time on some of the time-steps
Replies: 3
Views: 23

Re: Long simulation time on some of the time-steps

Hi Chang,
radiation scheme usually takes quite a long time. Can you look at your namelist.input and see whether raft is set to 30?
by Ming Chen
Wed Jul 14, 2021 7:59 pm
Forum: wrf.exe
Topic: WRF crashes at first time_step for nested run
Replies: 4
Views: 40

Re: WRF crashes at first time_step for nested run

Hi, Chris, we usually examine wrfinput file to make sure all the variables are physically reasonable. We also pay attention to inconsistency between variables, for example no soil moisture and temperature data at a land point. Such situation rarely occurs but we did see it in certain cases. I guess ...

Go to advanced search