Visualizing HWRF output
Visualize the Post-processed model forecast with GrADS scripts
The GrADS scripts are provided as an example to show the HWRF model output. However, the user is free to use any language of their choice. Some of the products are not available when a 12 h run is conducted. So, the 126 h canned data available on /glade/p/ral/jnt/HWRF/datasets_v3.9a/126h-full-output/ will be used to display the outputs.
Plotting Cross Sections on D03 domain
Create a workspace to plot the post-processed output.
mkdir -p /glade/scratch/${USER}/HWRF_v3.9a/plots
cd /glade/scratch/${USER}/HWRF_v3.9a/plots
Link the output grib file
ln -fs /glade/p/ral/jnt/HWRF/datasets_v3.9a/126h-full-output/com/2016100400/14L/matthew14l.2016100400.hwrfprs.core.0p02.f012.grb2 ./
Use g2ctl utility to make GrADS control file.
/glade/p/ral/jnt/HWRF/datasets_v3.9a/scripts/g2ctl.pl matthew14l.2016100400.hwrfprs.core.0p02.f012.grb2 > matthew14l.2016100400.hwrfprs.core.0p02.f012.grb2.ctl
Use gribmap to map between the GRIB data and the GrADS control file.
gribmap -i matthew14l.2016100400.hwrfprs.core.0p02.f012.grb2.ctl
A index file is created
ls matthew14l.2016100400.hwrfprs.core.0p02.f012.grb2.idx
Copy the GrADS script
cp /glade/p/ral/jnt/HWRF/datasets_v3.9a/scripts/ew_cs_core.gs ./
Open GrADS by typing grads.
If prompted, type y for landscape mode.
To execute the script type ew_cs_core.gs in the GrADS command prompt
Exit the GrADS program by typing quit.
Check for the image file
ls ew_cs_core.png
To display the image output type:
display ew_cs_core.png
Plotting precipitation and 10 m wind swath around the forecasted track
Go the directory where you want to make the plots
cd /glade/scratch/${USER}/HWRF_v3.9a/plots
Copy the relevant swath output and GrADS control file (default output from a 126 h HWRF run)
cp /glade/p/ral/jnt/HWRF/datasets_v3.9a/126h-full-output/com/2016100400/14L/*swath* ./
Copy the GrADS script
cp /glade/p/ral/jnt/HWRF/datasets_v3.9a/scripts/swath.gs ./
Open GrADS by typing grads.
If prompted, type y for landscape mode.
To execute the script type swath.gs in the GrADS command prompt
Exit the GrADS program by typing quit.
Check for the image file
ls swath.png
To display the image output type:
display swath.png
