HYSPLIT Forum: hysplitbbs.arl.noaa.gov

No. For meteorological inputs on a pressure vertical coordinate system, the terrain height is set to the surface height defined in the meteorological input file. If surface height is not in the meteorological file, then terrain height is calculated within HYSPLIT based on the input surface pressure.

conappend is what you want to do this.

Each processor is simulating different particles. If you ask HYSPLIT to run with 10 processors and simulate 2500 particles, then each processor will simulate 250 particles. After running HYSPLIT with multiple processors and before running parhplot, run parmerge to merge the multiple PARDUMP files in...

See here to learn about available ARL gridded meteorological data:

https://www.ready.noaa.gov/archives.php

The global datasets (GFS, GDAS) will work for your case.

A back trajectory will stop if it exits the meteorological domain (won't happen with a GFS file unless you extracted a smaller domain) or the meteorology does not cover the entire time period.

The units of the U and V that you carried through are in units of grids/min. To convert to m/s, you need to change your uwnd and vwnd equations in advmet as follows:

METO%TMRK(METO%FLAG%UWND)=((VAR2-VAR1)*TF+VAR1)*GX(II,JJ)/60.

METO%TMRK(METO%FLAG%VWND)=((VAR2-VAR1)*TF+VAR1)*GY(II,JJ)/60.

It seems like you are having trouble downloading and/or extracting this entire file. For Windows, if you right click on the file, gdas11-22.bin, and select Properties, this should that the file size is: 758,373,628 bytes. If you have this entire file in C:\Tutorial\japan and double click on the batc...

To have HYSPLIT simulate convection when CAPE exceeds a certain threshold, set CAPEMIN to a value larger than zero. Note that if you don't have CAPE in the met files, HYSPLIT will calculate for you for each grid cell, which will slow down your simulation. To utilize HYSPLIT's extreme convection sche...

Information on available forecast met files on the ARL server is found here:
https://www.ready.noaa.gov/READYmetdata.php

If ftp.arl.noaa.gov/pub/forecast doesn't work for you, you can try ftp.arl.noaa.gov/forecast