Search found 372 matches

by mgduda
Mon Nov 23, 2020 4:52 pm
Forum: Running
Topic: Can't create LBC conditions
Replies: 1
Views: 14

Re: Can't create LBC conditions

The LBCs are written by a stream named "lbc", which I don't see in your streams.init_atmosphere file. You can find an example of this stream in the streams.init_atmosphere file that should have been created in the "default_inputs" sub-directory of the main MPAS-Model directory after you compiled the...
by mgduda
Mon Nov 23, 2020 4:40 pm
Forum: Running
Topic: Climate change simulations with MPAS-A
Replies: 3
Views: 36

Re: Climate change simulations with MPAS-A

The MPAS-Atmosphere model that is available through the MPAS-Model GitHub repository is a stand-alone atmosphere model, without coupling to any of the other MPAS component models (ocean, land ice, and sea ice). The stand-alone MPAS-Atmosphere model does include a land-surface model -- the Noah model...
by mgduda
Tue Nov 17, 2020 2:00 am
Forum: New/Modified Static Data
Topic: missing values in SRTM_topo_3s on Cheyenne
Replies: 7
Views: 113

Re: missing values in SRTM_topo_3s on Cheyenne

I don't think the interpolation scheme could account for a 1-degree latitudinal shift. More likely, something went wrong in the preparation of the SRTM 3 arc-second dataset for use by the geogrid program. A quick test suggests that the shift is confined to the Southern Hemisphere, and there appears ...
by mgduda
Fri Nov 13, 2020 7:45 pm
Forum: Running
Topic: 60km uniform, Model integration failed
Replies: 10
Views: 363

Re: 60km uniform, Model integration failed

I just posted a reply in your other thread in the Post-processing section. Please don't hesitate to follow-up there if there are any details that I can help to clarify. We're glad to help!
by mgduda
Fri Nov 13, 2020 7:42 pm
Forum: Post-processing
Topic: How to post-process precipitation from MPAS model
Replies: 1
Views: 43

Re: How to post-process precipitation from MPAS model

Post-processing precipitation as described in this forum thread should work with bucket updates and also with config_bucket_update = 'none'; i.e., the method is completely general. However, if config_bucket_update = 'none', then the i_rainc and i_rainnc fields should always be zero, in which case th...
by mgduda
Wed Nov 11, 2020 10:50 pm
Forum: New/Modified Static Data
Topic: missing values in SRTM_topo_3s on Cheyenne
Replies: 7
Views: 113

Re: missing values in SRTM_topo_3s on Cheyenne

It might be worth trying to change interp_option = 3s:average_gcel(4.0)+four_pt+average_4pt to interp_option = 3s:average_gcell(4.0)+four_pt+average_4pt (i.e., change "gcel" to "gcell") in the GEOGRID.TBL file. I haven't verified this, but my guess would be that the geogrid program is not applying t...
by mgduda
Tue Nov 10, 2020 4:53 pm
Forum: New/Modified Static Data
Topic: landuse one value only
Replies: 4
Views: 50

Re: landuse one value only

Your 'index' file specifies that the south-west pixel of the dataset is at (29.999999997 lat, 100.004166658 lon); is this location actually that of the north-west pixel? If so, you could try setting

Code: Select all

known_y = 7200.0
dy = -0.00416666666625
in your index file.
by mgduda
Mon Nov 09, 2020 7:33 pm
Forum: New/Modified Static Data
Topic: landuse one value only
Replies: 4
Views: 50

Re: landuse one value only

Can you verify that your land use dataset covers your WRF domain geographically? Based on the 'index' file, it looks like the south-west corner of the dataset begins at ~30 N latitude, while the center latitude of your domain is at 15.474 N latitude.
by mgduda
Thu Nov 05, 2020 8:51 pm
Forum: ungrib
Topic: (RESOLVED) Change output path to intermediate files
Replies: 3
Views: 43

Re: Change output path to intermediate files

Actually, you can just include path information in the 'prefix' namelist option for ungrib. For example:

Code: Select all

&ungrib
 out_format = 'WPS',
 prefix = '/scratch/wrfhelp/intermediate/GFS',
/
by mgduda
Wed Nov 04, 2020 3:20 am
Forum: Post-processing
Topic: Are u10 values in MPAS output files instantaneous?
Replies: 2
Views: 54

Re: Are u10 values in MPAS output files instantaneous?

The u10, v10, t2, and most other output fields represent instantaneous values, so some work would be needed to get min/max/mean values over an output interval. There is a set of slides from the MPAS-Atmosphere tutorial that may help in guiding you through the process of adding new average-value diag...
by mgduda
Mon Oct 26, 2020 6:35 pm
Forum: Code development
Topic: MPAS-A latest?
Replies: 1
Views: 46

Re: MPAS-A latest?

There's been a focus over the past year on getting the GPU-enabled code in good shape and on implementing the MPAS-A dycore in CAM . One consequence of this is that the CPU-only, stand-alone MPAS-Atmosphere model hasn't received any major updates. Generally, the 'develop' branch is stable, though I ...
by mgduda
Mon Oct 26, 2020 6:27 pm
Forum: Code development
Topic: Missing -lpio dependence with 7.0 version
Replies: 2
Views: 20

Re: Missing -lpio dependence with 7.0 version

I think PR #707 should address this issue. Could you try merging the 'framework/fix_pio_lib_checks' branch from that PR into your local working branch to see whether that resolves the issue for you?
by mgduda
Thu Oct 22, 2020 4:30 pm
Forum: Running
Topic: 60km uniform, Model integration failed
Replies: 10
Views: 363

Re: 60km uniform, Model integration failed

Thanks so much for following up! It's helpful to know that the issue might have been in the initial conditions. Perhaps in a future release of MPAS-Atmosphere we can add some diagnostics to check the ranges of values of input fields to help in identifying similar issues.
by mgduda
Wed Oct 21, 2020 9:29 pm
Forum: Running
Topic: Troubles creating LBC lateral boundary files
Replies: 1
Views: 39

Re: Troubles creating LBC lateral boundary files

As mentioned in the online tutorial in Section 4.3 under "There are a few points worth making...": The MPAS stream manager infrastructure will complain if an input stream and an output stream share the same filename_template, so the filename_template for the "output" stream must be set to some other...
by mgduda
Mon Oct 19, 2020 10:55 pm
Forum: Post-processing
Topic: NWSC-3 benchmark timing results
Replies: 4
Views: 86

Re: NWSC-3 benchmark timing results

Thanks very much for the link -- now I know that "CSEP" stands for Cheyenne Sustained Equivalent Performance! My guess is that someone in NCAR's Computational and Information Systems Lab produced these numbers. As you're probably aware, Cheyenne does not have any sort of accelerators -- just Broadwe...
by mgduda
Mon Oct 19, 2020 10:16 pm
Forum: New/Modified Static Data
Topic: Combine multiple geogrid binary files into one
Replies: 8
Views: 227

Re: Combine multiple geogrid binary files into one

If you have twelve files (one for each month of the year) that are all on the same horizontal grid, you can use the 'cat' command to concatenate them all into a single file. For example, let's suppose that we have the files: 00001-07200.00001.03600.January 00001-07200.00001.03600.February 00001-0720...
by mgduda
Sun Oct 18, 2020 7:48 pm
Forum: Post-processing
Topic: Latitudes and longitudes from convert_mpas
Replies: 1
Views: 59

Re: Latitudes and longitudes from convert_mpas

I don't think I'm completely following your workflow, but multiplying the latitudes and longitudes in radians by 180.0/(atan(1.0)*4.0) should be fine. At what point are the Coordinates added? This isn't something that the convert_mpas program provides. Do you have an NCL script that processes the ou...
by mgduda
Sun Oct 18, 2020 7:29 pm
Forum: Post-processing
Topic: NWSC-3 benchmark timing results
Replies: 4
Views: 86

Re: NWSC-3 benchmark timing results

I'm not familiar with the CSEP benchmark. Do you have a link to where you obtained this spreadsheet, or do you know who performed these benchmarks?
by mgduda
Wed Oct 07, 2020 9:48 pm
Forum: WRF Physics
Topic: LH and GRDFLX over vegetated grid cells
Replies: 1
Views: 104

Re: LH and GRDFLX over vegetated grid cells

I've moved this thread from the MPAS-Atmosphere section of the forum.
by mgduda
Fri Oct 02, 2020 2:48 am
Forum: Special Running Options
Topic: How to install WRF-LES model
Replies: 3
Views: 292

Re: How to install WRF-LES model

I've moved this thread to the WRF section of the forum.
by mgduda
Wed Sep 23, 2020 4:05 pm
Forum: WRF Physics
Topic: why the H_DIABATIC(from microphysics) contains negative values?
Replies: 3
Views: 157

Re: why the H_DIABATIC(from microphysics) contains negative values?

This appears to be a WRF question, so I've moved it from the MPAS-Atmosphere section of the forum to the WRF Support section.
by mgduda
Tue Sep 22, 2020 11:17 pm
Forum: Running
Topic: 60km uniform, Model integration failed
Replies: 10
Views: 363

Re: 60km uniform, Model integration failed

Thanks very much for the complete summary of the nodes. I think 8 nodes with 128 GiB/node should provide more than enough memory for a 60-km simulation. Do you know whether your ".bashrc" file is being sourced when batch jobs are run? It might be worth trying to clean and re-compile the model with D...
by mgduda
Tue Sep 22, 2020 4:48 pm
Forum: Running
Topic: 60km uniform, Model integration failed
Replies: 10
Views: 363

Re: 60km uniform, Model integration failed

It's good to hear that setting the "input_interval" for the "surface" stream helped. We have been debating whether to include a check in the code to ensure that a valid input_interval is set if config_sst_update is set in the namelist.atmosphere file; hopefully this will save others from encounterin...
by mgduda
Mon Sep 21, 2020 8:42 pm
Forum: Running
Topic: 60km uniform, Model integration failed
Replies: 10
Views: 363

Re: 60km uniform, Model integration failed

I also noticed in your namelist.atmosphere file that you have the bucket update interval set to 153 hours ("153:00:00"): &physics config_sst_update = true config_sstdiurn_update = true config_deepsoiltemp_update = false config_radtlw_interval = '00:30:00' config_radtsw_interval = '00:30:00' config_b...
by mgduda
Mon Sep 21, 2020 8:32 pm
Forum: Running
Topic: 60km uniform, Model integration failed
Replies: 10
Views: 363

Re: 60km uniform, Model integration failed

Thanks very much for attaching your namlist.atmosphere, streams.atmosphere, and log files. The error message At line 1495 of file mpas_timekeeping.F Fortran runtime error: Bad integer for item 1 in list input in your stderr log generally indicates that the model is attempting to parse an invalid dat...

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