How to understand the trajectory endpoints file format?

Post Reply
fede
Posts: 1
Joined: June 20th, 2021, 6:59 pm
Registered HYSPLIT User: No

How to understand the trajectory endpoints file format?

Post by fede »

Hello,

I am dealing with a huge problem for me. I am a relatively new user and i need back trajectory endpoints file for my thesis. I need the "distance" variable in trajectory endpoint file for my study. Therefore i need to understand the endpoint file format to obtain distance variable and use it. When i try to understand the format of endpoins file, I found this in "Trajectroy endpoints format help":

"Trajectory output file format (ASCII)
.
.
.
n1XF8.1 - n diagnostic output variables (1st output is always pressure)"

I need the definiton of last variable (or sometimes, in Isentropic method, i need last two variable's definiton) The one next to AGL(meters). But i couldn't find it anywhere.
Please help me.
Thanks
alicec
Posts: 328
Joined: February 8th, 2016, 12:56 pm
Registered HYSPLIT User: Yes

Re: How to understand the trajectory endpoints file format?

Post by alicec »

The diagnostic variables that can be output in the trajectory endpoints file are the following:

https://www.ready.noaa.gov/hysplitusersguide/S410.htm
https://www.ready.noaa.gov/hysplitusersguide/S614.htm

TM_PRES=0 trajectory diagnostic output pressure variable marker flag
TM_TPOT=0 trajectory diagnostic output potential temperature
TM_TAMB=0 trajectory diagnostic output ambient temperature
TM_RAIN=0 trajectory diagnostic output rainfall rate
TM_MIXD=0 trajectory diagnostic output mixed layer depth
TM_TERR=0 trajectory diagnostic output terrain height
TM_DSWF=0 trajectory diagnostic output downward short-wave flux
TM_RELH=0 trajectory diagnostic output relative humidity

If you need the distance traveled or some other distance, you will need to calculate it from the position information in the file.
Post Reply

Return to “HYSPLIT Workshop”