Search found 8 matches

by Matt Li
September 6th, 2017, 12:49 pm
Forum: Conversion programs
Topic: api2arl more levels
Replies: 9
Views: 3664

Re: api2arl more levels

i found the error in the conversion. the conversion from "z" to "dz/dt" in the api2arl file just created errors (***) in the ARl file. after removing this parameter the conversion worked fine and i can now use the model data input for the trajectories.

thank you very much for your help
lg Matthias
by Matt Li
September 4th, 2017, 4:17 am
Forum: Conversion programs
Topic: api2arl more levels
Replies: 9
Views: 3664

Re: api2arl more levels

Thank you for your answers. The trajectories calculated without error when the vertical velocity was changed to isosigma. But now i am very concerned about the quality of the calculation. I had another look at my Grib file. The parameter w - vertical wind speed is available and is probably somehow u...
by Matt Li
August 22nd, 2017, 8:50 am
Forum: Conversion programs
Topic: api2arl more levels
Replies: 9
Views: 3664

Re: api2arl more levels

Hello Alice, thanks for your reply. I also wondered why its running in the forward direction. I checked again and noticed that even that there is no error the output makes no sense. The trajectory drops to 0 after the first step. i tried it for many heights from 1 to 10000 and its always the same. A...
by Matt Li
August 21st, 2017, 7:35 am
Forum: Conversion programs
Topic: api2arl more levels
Replies: 9
Views: 3664

Re: api2arl more levels

I made some progress but encountered another problem. I was able to change the api2arl file to accept more levels and the api2arl program is running without a error message. My problem occurs when I try to calculate the back Trajectory (the forward one works ) There is just no output in the tdump fi...
by Matt Li
August 2nd, 2017, 5:21 am
Forum: Conversion programs
Topic: api2arl more levels
Replies: 9
Views: 3664

api2arl more levels

Hello, i am trying to convert ecmwf IFS data to arl. The api2arl converter works fine for 50 levels. My only problem is that I have 137 levels to convert and the max Value seems to be 50. When I try to change it in the api2arl_v4.f file I get invalid memory reference errors. Is there a proper was to...
by Matt Li
July 11th, 2017, 10:58 am
Forum: Conversion programs
Topic: Convert IFS netCDF data to arl
Replies: 5
Views: 3878

Re: Convert IFS netCDF data to arl

Thanks for your reply. It worked all right for me. It gave an error message but until the hight of 10000meters it worked fine. thats also the region i'm interested in. Now I got another problem. Ecmwf changed to Grib2 an now i ḿ struggling doing the conversion with api2arl. Fist it was impossible to...
by Matt Li
April 17th, 2017, 6:57 am
Forum: Conversion programs
Topic: Convert IFS netCDF data to arl
Replies: 5
Views: 3878

Re: Convert IFS netCDF data to arl

Hello. thank you very much for your reply. It took me some time to get everything in order. The conversion works for the most part. in My Data I got 91 modell levels. when I try to do the conversion i get this Error. 900 900 while executing "exec $exec_dir/grib2arl.exe $arg1 $arg2 $arg3 $arg4 $arg9 ...
by Matt Li
February 27th, 2017, 3:44 pm
Forum: Conversion programs
Topic: Convert IFS netCDF data to arl
Replies: 5
Views: 3878

Convert IFS netCDF data to arl

Hello, I am new to Hysplit so I need some help to get my data running. I have the registered PC version and Linux but i don't really know where to start. I should use the integrated forecast system (IFS) data of ecmwf in the netcdf format ( 3 hour resolution on a 0.25 x 0.25 grid ) . I can also get ...