Fatal Error 900

Topics about the HYSPLIT trajectory model.
Post Reply
UCPH1
Posts: 6
Joined: December 11th, 2018, 5:50 am
Registered HYSPLIT User: No

Fatal Error 900

Post by UCPH1 » December 11th, 2018, 5:57 am

I am new to HYSPLIT and I am trying to run backward and forward trajectories in Greenland.


Start time: 16 06 01 00
Starting locations: 3 starting locations at 67.00 -47.00 at 2000, 3000 and 4000 m agl)
Run time: 96 hours
Direction: back
Top of model: 4000
Vertical motion: 0 = input model data
output: just setting it to my desktop

once I try running it I get the message : *FATAL ERROR* main: all source points off all meteo grids!
See MESSAGE file for more information. 900

Any help would be appreciated.

Fantine
Posts: 69
Joined: November 8th, 2012, 3:41 pm

Re: Fatal Error 900

Post by Fantine » December 11th, 2018, 1:09 pm

What meteorological data did you use? Check if you have files for May and June because you are computing backward trajectory starting at June 1st 00 UTC.
You should also set the model top to a higher altitude, like 10000.

UCPH1
Posts: 6
Joined: December 11th, 2018, 5:50 am
Registered HYSPLIT User: No

Re: Fatal Error 900

Post by UCPH1 » December 12th, 2018, 9:21 am

I am trying to use NCEP/NCAR Reanalysis (1948 - present) I have also been looking into various others like GDAS but it is telling me "*ERROR* metpos: start point not within (x,y,t) any data file - start time before start of meteorology data" which I presume to means they dont have data for my starting coordinates (67.00, -47.00)

Fantine
Posts: 69
Joined: November 8th, 2012, 3:41 pm

Re: Fatal Error 900

Post by Fantine » December 12th, 2018, 3:27 pm

NCEP/NCAR Reanalysis is a global dataset. I was able to run backward trajectories from the starting location (67.00, -47.00). You need to have RP201605.gbl and RP201606.gbl files because your starting time is 2016/06/01 00 UTC.

UCPH1
Posts: 6
Joined: December 11th, 2018, 5:50 am
Registered HYSPLIT User: No

Re: Fatal Error 900

Post by UCPH1 » December 13th, 2018, 3:11 am

That was my issue I was only using RP201505.gbl I was not including the 201606.gbl but thanks!

One last question, what is the best way to compute monthly mean trajectories? I am trying to look at the difference in backward and forward trajectories between summer (June, July, August) and winter (December, Jan, Feb) monthly means.

Fantine
Posts: 69
Joined: November 8th, 2012, 3:41 pm

Re: Fatal Error 900

Post by Fantine » December 13th, 2018, 5:42 pm

Maybe you can look at this section of the HYSPLIT tutorial: https://www.ready.noaa.gov/documents/Tu ... _freq.html
It is about how to generate daily trajectories and process the output for the trajectory frequency.

UCPH1
Posts: 6
Joined: December 11th, 2018, 5:50 am
Registered HYSPLIT User: No

Re: Fatal Error 900

Post by UCPH1 » December 15th, 2018, 8:12 am

Ok awesome. Thanks for taking the time and I appreciate your help.

Post Reply