How to get meteorology output along the trajectory on LINUX

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grug
Posts: 3
Joined: November 27th, 2018, 3:08 am
Registered HYSPLIT User: Yes

How to get meteorology output along the trajectory on LINUX

Post by grug » November 27th, 2018, 3:40 am

This is the method for WINDOWS:
Meteorology Output Along the Trajectory
Sets the option to write the value of certain meteorological variables along the trajectory to the trajectory
output file. The marker variables are set to (1) to turn on the option. Multiple variables may be selected
for simultaneous output but only one variable may be plotted. If multiple variables are selected in
conjunction with the trajectory display option, then only the last variable output will be shown in the
graphic. The variable output order is fixed in the program and cannot be changed.
  • TM_PRES (0) - diagnostic marker variables to output atmospheric pressure (1) along the
    trajectory
    TM_TPOT (0) - potential temperature (1) in degrees Kelvin
    TM_TAMB (0) - ambient temperature (1) in degrees Kelvin
    TM_RAIN (0) - rainfall (1) in mm per hour
    TM_MIXD (0) - mixed layer depth (1) in meters.
    TM_RELH (0) - relative humidity (1) in percent.
    TM_DSWF (0) - downward solar radiation flux (1) in watts.
    TM_TERR (0) - terrain height (1) in meters required for the trajectory plot to show underlying
    terrain.
I want to get meteorology output along the trajectory on LINUX, how to edit the TRAJ.CFG? I just get the TRAJ.CFG when it finished. And if this can be done. How can I get the WRFout value like aerosol concentrations or some cloud information!

alicec
Posts: 101
Joined: February 8th, 2016, 12:56 pm
Registered HYSPLIT User: Yes

Re: How to get meteorology output along the trajectory on LINUX

Post by alicec » November 27th, 2018, 10:41 am

The tutorial has example linux scripts in many of the sections.
Simply click on the icon of a penguin at the top.
https://ready.arl.noaa.gov/documents/Tu ... _traj.html

You can simply edit the TRAJ.CFG and SETUP.CFG with any text editor and
then use them to start a run.
The user guide has info on the structure of the TRAJ.CFG file
https://www.ready.noaa.gov/hysplitusersguide/S262.htm
and options for the namelist SETUP.CFG file (note that options that
pertain to trajectory runs are noted).
https://www.ready.noaa.gov/hysplitusersguide/S410.htm

The ARL MET files do not contain aerosol concentrations or cloud information so
you would not be able to output those along the trajectory.
The trajectory runs do not calculate concentrations.

grug
Posts: 3
Joined: November 27th, 2018, 3:08 am
Registered HYSPLIT User: Yes

Re: How to get meteorology output along the trajectory on LINUX

Post by grug » November 27th, 2018, 11:03 pm

Thank you, I can run the hysplit by changing the SETUP.CFG, not working for editing the TRAJ.CFG. And I notice the GDAS1 file have some cloud value like
|3 TCLD | 1.00 | PCT | 20.00 | AVERAGE TOTAL CLOUD COVER |
|3 CLDB | 1.00 | M | 0.00 | CLOUD BOTTOM HEIGHT |
|3 CLDT | 1.00 | M | 0.00 | CLOUD TOP HEIGHT |
|3 CWMR| 1.00 | G/KG | 0.00 | CLOUD WATER MIXING RATIO |

Can I change the code to get these values along the trajectory,but I don't know how to start?

alicec
Posts: 101
Joined: February 8th, 2016, 12:56 pm
Registered HYSPLIT User: Yes

Re: How to get meteorology output along the trajectory on LINUX

Post by alicec » December 3rd, 2018, 10:38 am

By default HYSPLIT looks for a CONTROL and SETUP.CFG file.

CONTROL file
https://www.ready.noaa.gov/hysplitusersguide/S262.htm
and options for the namelist SETUP.CFG file (note that options that
pertain to trajectory runs are noted).
https://www.ready.noaa.gov/hysplitusersguide/S410.htm

If you want to change the code, then you could look at how the other variables are extracted
and add the variables you want in the same way.

There are also some utilities that can be run to extract met variables from the ARL files. You could use one of those as well to
get the variables after you have run the trajectories.
xtrct_stn, profile and vmixing.

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