Search found 16 matches
- July 22nd, 2021, 1:10 pm
- Forum: Developers
- Topic: Output new meteo variables along trajectory
- Replies: 1
- Views: 40106
Output new meteo variables along trajectory
I'm modifying the Linux source code to output the U and V wind components as diagnostic variables along a trajectory using the setup flags tm_uwnd and tm_vwnd. The meteo data I'm using is from CESM, on a lat/lon grid in m/s. I have the trajectory output file successfully producing a new column for e...
- July 16th, 2021, 12:54 pm
- Forum: Developers
- Topic: Changing internal vertical resolution
- Replies: 1
- Views: 17402
Re: Changing internal vertical resolution
Answered in an email exchange, in case anyone else wants to know: If you have the source code, modify library/hysplit/metlvl.f to set new values for AA, BB, and CC (I used AA=7.5, BB=2.5, CC=0 to double the vertical resolution). You will also need to set NLVL to determine the number of internal sigm...
- July 7th, 2021, 4:09 pm
- Forum: Developers
- Topic: Changing internal vertical resolution
- Replies: 1
- Views: 17402
Changing internal vertical resolution
I use HYSPLIT's trajectory model with data on hybrid sigma-pressure levels from CESM/CAM5. The input data I provide has 30 vertical levels, but comparing vertical profiles of, for example, temperature produced by HYSPLIT to those on the native vertical coordinate system, the HYSPLIT resolution seems...
- June 24th, 2021, 6:52 pm
- Forum: General questions on meteorological data needed for HYSPLIT
- Topic: Choosing variables to include - are some "better"?
- Replies: 0
- Views: 1811
Choosing variables to include - are some "better"?
When you're working with data from a simulation and have many options for variables to include, are some better than others? I am working with CESM/CAM output data on hybrid levels, converted to ARL format with MeteoInfo (and hopefully soon cesm2arl) and run through the trajectory model. The bare mi...
- March 22nd, 2021, 3:05 pm
- Forum: Developers
- Topic: Unable to reproduce interpolation onto trajectory
- Replies: 0
- Views: 19798
Unable to reproduce interpolation onto trajectory
I am working with CESM/CAM output data on hybrid levels, converted to ARL format with MeteoInfo (and hopefully soon cesm2arl) and run through the trajectory model. Ultimately I would like to take the trajectory location output (time/lat/lon/height or pressure) and use it to reference other variables...
- February 25th, 2021, 5:18 pm
- Forum: Trajectory Model
- Topic: Strange output when hitting the ground
- Replies: 3
- Views: 5474
Re: Strange output when hitting the ground
Thanks for the suggestions, I think I figured it out. I'm working with CESM/CAM data, and for a while I provided the 10-m zonal wind U10 but not the meridional wind V10. I have since discovered that the 'U10' variable provided in CAM4 is actually the total 10-m wind speed, not the zonal velocity, an...
- December 12th, 2020, 4:59 pm
- Forum: General questions on meteorological data needed for HYSPLIT
- Topic: Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
- Replies: 6
- Views: 5094
Re: Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
cesm2arl relies on a Makefile.inc that wasn't included in the tarball and doesn't seem to come with the version of HYSPLIT that is currently available on the website. Do you have a sample Makefile.inc that I could take and modify? I'm not familiar enough with compiling Fortran to figure out which va...
- November 10th, 2020, 10:38 am
- Forum: General questions on meteorological data needed for HYSPLIT
- Topic: Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
- Replies: 6
- Views: 5094
Re: Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
Thanks for the suggestions! Manual adjustment of the year sounded like it would work, but I wanted to make sure there weren't any deeper problems I was missing. And great to hear the next update will include a converter for CESM files, definitely looking forward to using that.
- November 5th, 2020, 5:04 pm
- Forum: General questions on meteorological data needed for HYSPLIT
- Topic: Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
- Replies: 6
- Views: 5094
Re: Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
I re-ran the conversion and didn't get any errors from MeteoInfo. I made two more files per your suggestion, one for 31 Dec 00:00:00 through 21:00:00 and one for 01 Jan 00:00:00 through 21:00:00 (output every 3 hours), and chk_file worked fine for each of them individually. I made another file with ...
- November 3rd, 2020, 3:56 pm
- Forum: General questions on meteorological data needed for HYSPLIT
- Topic: Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
- Replies: 6
- Views: 5094
Error 23 when spanning 31 Dec 0039 to 01 Jan 0040
I run HYSPLIT using output from the CAM component of CESM, converted into ARL-friendly format with MeteoInfo. 99% of my data files, which have output every 3 hours for up to ten days, can be read by HYSPLIT with no problem, but if I try to run the trajectory model or the Check File program on a file...