Visualization

Visualization cindyhg Tue, 10/15/2019 - 10:58

Plot tracker output

Prepare to run Tracker Visualization

After running the tracker for Matthew 14L 2016100400, you should have produced the tracker output file ${WORKhwrf}/tracker/output.atcfunix. However, the track output will be restricted to only 12 h. A full 126 h forecast is available as canned dataset on Cheyenne for the users to use. To plot track and intensity the full 126 h output will be used.

In order to plot this forecast using ATCF_PLOT, it is necessary to add the HWRF forecast to the operational A-deck file so it can be visualized with ATCF_PLOT

First change the directory where the plotting scripts reside.

cd ${SCRATCH}/hwrfrun/sorc/gfdl-vortextracker/trk_plot/plottrak/

Copy the operational A-deck file to the above directory and append the newly created track data renaming the tutorial HWRF track to HTUT.

cp /glade/p/ral/jnt/HWRF/datasets_v3.9a/Matthew/abdecks/aal142016.dat

cat /glade/p/ral/jnt/HWRF/datasets_v3.9a/126h-full-output/2016100400/14L/tracker/output.atcfunix | sed 's/HWRF/HTUT/g' >> aal142016.dat

Verify that file aal142016.dat now contains the HTUT forecast for 2016100400.

grep HTUT aal142016.dat

Run Tracker Visualization (ATCF_PLOT)

ATCF_PLOT is a GUI based visualization tool that renders storm tracks using GrADS. ATCF_PLOT allows the user to overlay multiple storm tracks along with observed storm locations on a single plot, as well as time series of storm intensity.

cd ${SCRATCH}/hwrfrun/sorc/gfdl-vortextracker/trk_plot/plottrak

Start up ATCF_PLOT
- Run the script ./atcfplot.sh 2016 al
  The script takes as input the storm year (2016, in this exercise) and basin (al, in this exercise).
  A GUI will be spawned, with buttons on the left, top, and bottom. Rearrange the windows so you can see both the GUI and terminal windows. The GUI writes status messages to that terminal window.
From the top drop down Storms menu, select al142016 Matthew.
From the top drop down Dates menu, select the date 20161004 and then hour 00.
Select models from the left column of buttons, e.g. the HTUT track we just generated and the operational HWRF track.
Press the Plot button to generate the plot.
Save the plot to an image file by selecting the top drop down Main menu, then any of the Print sub-menus.
From the top menu Opts_1 dropdown list, select Intensity forecast to plot a time series. The available options are:
- MSLP
- Winds

Press the Plot button to generate the time series intensity plot.
Explore the other menus, pressing Plot whenever you are ready to create a new image.
Press Quit to shut down the GUI.

Once you are done creating plots with ATCF_PLOT, the image files you created may be viewed with the display command (for example display mslp1.gif).
Note: display is a utility in the ImageMagick program

Plot UPP Output

Plot UPP Output cindyhg Tue, 10/15/2019 - 11:07

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