Search found 130 matches

by Fantine
January 31st, 2020, 11:59 am
Forum: Conversion programs
Topic: Error while compiling and linking api2arl
Replies: 1
Views: 1251

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: 1447

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: 1449

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: 1032

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: 1280

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: 3651

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: 1175

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...
by Fantine
October 2nd, 2019, 10:30 am
Forum: Users
Topic: ARW2ARL issue with WRF V4
Replies: 1
Views: 929

Re: ARW2ARL issue with WRF V4

What problem do you have converting WRF v4 output to the HYSPLIT format?
There is no need to change the WRFDATA.CFG file unless the variables in your WRF files are different from those listed in the default CFG file.
by Fantine
September 19th, 2019, 2:36 pm
Forum: Conversion programs
Topic: Error in using arw2ral
Replies: 1
Views: 1295

Re: Error in using arw2ral

It looks like you have multiple WRF output files in the ARLDATA.BIN, but the data may be incorrect chronological order.
This previous post on the forum may be helpful: viewtopic.php?f=14&t=1499
by Fantine
September 6th, 2019, 2:09 pm
Forum: Conversion programs
Topic: arw2arl precision
Replies: 1
Views: 1130

Re: arw2arl precision

There is a technical note for the arw2arl converter: https://www.ready.noaa.gov/data/web/mod ... rw2arl.pdf
You can use the example of WRFDATA.CFG to include DIFR and DIFW for the better precision of precip and vertical velocity.