Forward Trajectory Error

[federica]

Hello,

I am a new Hysplit user and I'm trying to perform a simple forward trajectory simulation with this input file:

Starting Time: 06 12 02 00
Number of starting locations: 1
Lat, Long, Height [m]: 36.00 15.00 200.00
Total run time: 5
Vertical motion method: 0
Top of model: 10000

The problem is that my wind fiels file is composed by 4 arl files that I made converting my original grib1 files using MeteoInfo.
In each file there is only one time period of meteo data and the 4 periods are:
file 1: 06 12 02 00
file 2: 06 12 02 03
file 3: 06 12 02 06
file 4: 06 12 02 09

Everytime I run the model I have this Error:

Model started ...
HYSPLIT4 - Initialization
USE: svn info | tail -n3
to fill in these three records
with the version information!
WARNING metset: Only one time period of meteo data
WARNING metset: Only one time period of meteo data
WARNING metset: Only one time period of meteo data
WARNING metset: Only one time period of meteo data
*WARNING*: metini - vertical velocity missing, switching to divergence
Input data file: 1 1 FNL1
*WARNING*: metini - vertical velocity missing, switching to divergence
Input data file: 1 2 FNL1
*WARNING*: metini - vertical velocity missing, switching to divergence
Input data file: 1 3 FNL1
*WARNING*: metini - vertical velocity missing, switching to divergence
Input data file: 1 4 FNL1
Calculation Started ... please be patient
*ERROR* metpos: start point not within (x,y,t) any data file
- start time before start of meteorology data
- start time after end of meteorology data
STOP 900

Any help about how to solve this problem?
Thank you so much!

Federica

[ariel.stein]

You can concatenate the files by using cat command
cat file 1 > file
cat file 2 >> file
cat file 3 >> file
cat file 4 >> file

[federica]

Thank you for the answer!

I have concatenated the files and MeteoInfo reads my new ARL file. But now I have this error with hysplit:

*ERROR* metset: 2nd time period INDX record missing

Thank you

Federica

[ariel.stein]

Then, I am not sure the conversion of your grib files was done correctly. I am not familiar with the way MeteoInfo converts the data.

[federica]

I have solved the problem, thank you so much for your advice, it was the right way!