Search found 103 matches

by Fantine
March 19th, 2020, 4:15 pm
Forum: Users
Topic: Increase topography resolution
Replies: 4
Views: 172

Re: Increase topography resolution

For using a user-defined TERRAIN.ASC, you will need to consider and do the following: 1) Check if the terrain data are in the met file. HYSPLIT uses it when it is available. In this case, you will need to remove the terrain data from the met file or modify HYSPLIT subroutine "metinp.f" to not readin...
by Fantine
March 18th, 2020, 9:44 am
Forum: Users
Topic: Increase topography resolution
Replies: 4
Views: 172

Re: Increase topography resolution

HYSPLIT uses the terrain from the meteorological file if it is available. The gdas 1 deg file has terrain data (named as SHGT). For generating a TERRAIN.ASC file, you can follow the Readme_bdyfiles.txt in ~/bdyfiles subdirectory, or check the user guide: https://www.ready.noaa.gov/hysplitusersguide/...
by Fantine
February 4th, 2020, 8:06 pm
Forum: Users
Topic: Problem running Hysplit Archive dispersion
Replies: 1
Views: 863

Re: Problem running Hysplit Archive dispersion

Your previous post was not deleted. You can still look at it https://hysplitbbs.arl.noaa.gov/viewtopic.php?f=28&t=1765 There are many users using the web-based HYSPLIT. We limit the duration of the runs to prevent our server from being overloaded by users' requests. This applies to both registered a...
by Fantine
January 31st, 2020, 11:59 am
Forum: Conversion programs
Topic: Error while compiling and linking api2arl
Replies: 1
Views: 978

Re: Error while compiling and linking api2arl

The api2arl converter needs either grib_api library or eccodes library to decode the grib format met data. If you are using grib_api library, replace "use grib_api" with "use eccodes" in the api2arl_v3.f. If you have eccodes library, the api2arl_v3.f should be compiled as (or use the attached Makefi...
by Fantine
January 31st, 2020, 11:15 am
Forum: Dispersion Model
Topic: Problem running Hysplit Archive dispersion
Replies: 2
Views: 1129

Re: Problem running Hysplit Archive dispersion

Have you compared the CONTROL of both runs? It may give you a hint about why the results are different. You may want to consider using the HYSPLIT PC version which has some features not available in the web-based version. Here is the downloading page of the PC version: https://www.ready.noaa.gov/HYS...
by Fantine
November 27th, 2019, 12:08 pm
Forum: General questions on meteorological data needed for HYSPLIT
Topic: HYSPLIT meteororlogical data files-Q 4,5
Replies: 2
Views: 1114

Re: HYSPLIT meteororlogical data files-Q 4,5

The error showed that the trajectory started outside the met domain. Did you center the met grid at the location of your trajectory starting point when you created met data? As mentioned in the tutorial section 3.5 (https://ready.arl.noaa.gov/documents/Tutorial/html/meteo_enter.html), this function ...
by Fantine
November 27th, 2019, 11:49 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: HYSPLIT meteororlogical data files
Replies: 1
Views: 796

Re: HYSPLIT meteororlogical data files

In the GUI, open Meteorology/Convert to ARL/ECMWF ERA, the required variables are listed in the top of the popped up window. The converter program will look for these listed variables. For other variables in the file, the program will ignore.
Capture2.PNG
by Fantine
November 27th, 2019, 11:32 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: HYSPLIT meteororlogical data files
Replies: 2
Views: 924

Re: HYSPLIT meteororlogical data files

This is the HYSPLIT user guide: https://www.ready.noaa.gov/hysplitusersguide/ Click METEOROLOGY/Meteorology Help/Data Format, you will find the detail info about ARL format including required met fields for running HYSPLIT. It is recommended to use the met datasets that have already been converted t...
by Fantine
October 30th, 2019, 4:52 pm
Forum: Conversion programs
Topic: Conversion for GEOS
Replies: 4
Views: 3205

Re: Conversion for GEOS

The program is using an existing CFG file. You need to delete it before running the updated executable. Otherwise, the program will use the old CFG file instead of creating a new one. Make sure the GRIDS(10) and GRIDS(11) are lat/lon coordinates of the 1,1 grid point. Ps. for the mer2arl program, th...
by Fantine
October 30th, 2019, 4:16 pm
Forum: Conversion programs
Topic: Compiling mer2arl issue and segmentation error
Replies: 1
Views: 889

Re: Compiling mer2arl issue and segmentation error

You can use the precompiled mer2arl executable in ~/exec directory. Check if you have all the required libraries installed and linked. Instructions about this are in README_external_libraries.txt. If you compile the program in ~/data2arl/mer2arl directory yourself, the Makefile should be modified by...