Search found 12 matches

by D_Fora
Wed Mar 03, 2021 3:31 am
Forum: Special Running Options
Topic: Long-time WRF simulation
Replies: 9
Views: 1187

Re: Long-time WRF simulation

Hi, thank you for suggesting using sst_update option in long simulation. I think SST data can be found in this link (ftp://polar.ncep.noaa.gov/pub/history/sst). Files inside folder named 'rtg_high_res' contain high resoulution data range from 2015 to 2020. This set of data may be daily. Should I set...
by D_Fora
Thu Feb 25, 2021 4:16 am
Forum: Special Running Options
Topic: Long-time WRF simulation
Replies: 9
Views: 1187

Re: Long-time WRF simulation

Hi Huang, You shouldn't need more than about 24-48 hours for spin-up, so if you're interested in the data from 1 Jan 2019, you can just start it Dec 30 or 31 and it should be okay. As for nudging, you can modify the namelist options to declare when you want nudging to start and stop. In the &fdda s...
by D_Fora
Tue Feb 23, 2021 9:32 am
Forum: Special Running Options
Topic: Long-time WRF simulation
Replies: 9
Views: 1187

Long-time WRF simulation

Hi, I want to do a 1-year WRF simulation with analysis nudging using ERA5 hourly reanalysis data.

Take 2019 for example, should I run WRF from Dec,2018 to Dec,2019, taking Dec in 2018 as spin-up period? If so, does nudging set in Dec,2018?

Thanks,

HUANG
by D_Fora
Wed Dec 16, 2020 3:05 am
Forum: real.exe
Topic: (Resolved)REAL ERROR: could not find trapping x locations
Replies: 3
Views: 232

Re: REAL ERROR: could not find trapping x locations

Yes, there are wrong values in TT variable in the intermediate files. Fixed them and WPS run successfully.

Thanks for Chen's kindly suggestion.
by D_Fora
Tue Dec 15, 2020 3:30 am
Forum: real.exe
Topic: (Resolved)REAL ERROR: could not find trapping x locations
Replies: 3
Views: 232

Re: REAL ERROR: could not find trapping x locations

When I debug with code 100, I got detail error messages, here are some of them: =================================================================== Yes, this special data is acceptable to use: OUTPUT FROM METGRID V4.1 Input data is acceptable to use: met_em.d01.2020-12-06_12:00:00.nc metgrid input_w...
by D_Fora
Mon Dec 14, 2020 9:29 am
Forum: real.exe
Topic: (Resolved)REAL ERROR: could not find trapping x locations
Replies: 3
Views: 232

(Resolved)REAL ERROR: could not find trapping x locations

Hi, I wrote my own intermediate files in binary format with metgrid.exe passed successfully. However I got a "trouble, could not find trapping x locations" after running real.exe.
I tried change the value of 'time_step' but doesn't work. Is there any suggestion? Thanks a lot.
HUANGS
by D_Fora
Fri Dec 11, 2020 8:04 am
Forum: ungrib
Topic: Missing value in intermediate files
Replies: 1
Views: 482

Missing value in intermediate files

Hi, I trie to write meterological gridded field to intermediate files in my own. However, I found that there are some missing value in some field, take UU for example, 9.96920997E+36 which represents missing value will get in the written intermediate files. Should I change this value in the written ...
by D_Fora
Mon Nov 18, 2019 2:17 am
Forum: wrf.exe
Topic: Slow running WRF
Replies: 2
Views: 479

Re: Slow running WRF

Yes this case ran very slow. I wonder whether there is special reason you build WRF in dm+sm mode? If possible, can you rebuild WRF in dumper mode, then rerun this case? Thanks for your suggestion. I have tried dumper mode but it was slow as well as dm+sm mode. It is worth noting that it run very f...
by D_Fora
Fri Nov 15, 2019 3:33 am
Forum: wrf.exe
Topic: Slow running WRF
Replies: 2
Views: 479

Slow running WRF

Hi, I find it slow to run WRF real-case in my workstation. Here're details: WRFV3.8.1 is used to test for a 37-hours real case, which congfigured with 2 one-way nested domains with horizontal grid spacing of 27, 9 km respectively. Both WPS and WRF are installed in the Linux-subsystem in Window10(wor...
by D_Fora
Mon Oct 22, 2018 7:14 am
Forum: NCL
Topic: wrf_user_vert_interp
Replies: 3
Views: 578

Re: wrf_user_vert_interp

Thank you very much!
by D_Fora
Sat Oct 06, 2018 4:25 am
Forum: NCL
Topic: wrf_user_vert_interp
Replies: 3
Views: 578

wrf_user_vert_interp

Hi, I wonder what methods were used in both vertical interpolation and extrapolation of ARW WRF variables to Height AGL in this function? Is there any details about wrf_user_vert_interp? What other built-in functions can I use to interpolate or extrapolate WRF variables linearly to the layer I conce...
by D_Fora
Mon Sep 03, 2018 1:32 pm
Forum: real.exe
Topic: Error in REAL.EXE
Replies: 1
Views: 302

Error in REAL.EXE

I used WRFV3.8.1 congfigured with 4 one-way nested domains with horizontal grid spacing of 27, 9 , 3, 1(d04, mesh size of 31*25) km respectively. However I got error messages below: The "Width" of th lateral boundary conditions must be entirely contained within the decomposed patch. ips= 1, ipe= 4, ...

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