HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Hello, is there a conversion utility to convert station met data to ARL format without using the GUI?

I have seen this:
https://ready.arl.noaa.gov/documents/Tu ... enter.html

But cannot find other information on a utility to do the conversion at the command line using an input text file of observations?

Thanks,
Anna

The programs that do this are included in the PC distribution and are called:


Surface data to ARL format: stn2arl.exe
Usage: stn2arl [filein] [fileout] [clat] [clon] [optional process ID number]
Creates multiple time periods ARL packed from surface obs
07 09 04 11 00 270 5.0 1500.0 4
07 09 04 12 00 280 5.0 1500.0 4



Upper-air data to ARL format: snd2arl.exe
Usage: stn2arl [filein] [fileout] [clat] [clon] [optional process ID number]
Creates multiple time periods ARL packed from surface obs
07 09 04 11 00 270 5.0 1500.0 4
07 09 04 12 00 280 5.0 1500.0 4

c:\hysplit4\exec>snd2arl.exe
Usage: snd2arl [filein] [fileout] [clat] [clon] [mixing] [yymmddhh] [optional p
rocess ID number]
Creates one time period ARL packed format from a single rawinsonde over a 50 x
50 (10 km) grid
and where clat-clon is the grid center and mixing is an integer from 1 to 7 def
ining the
turbulent mixing from convective (1), neutral(4), to very stable (7). The input
file should
be free format with the following information (without the label record):
Pressure Temp DewPt Height Direction Speed
1007.00 27.40 18.40 93.00 150.00 4.63
1000.00 26.60 17.60 146.00 151.60 4.55
925.00 20.20 16.10 828.00 169.54 3.63
891.00 17.40 15.30 1150.44 178.16 3.18
883.89 17.20 15.25 1219.00 180.00 3.09

Thanks for the information, I have a couple more questions.

1) What is the format for the data in the input file (filein) for the stn2arl program? (ie. what variables in what order, what kind of time stamp etc)
2) what is this string of numbers?
07 09 04 11 00 270 5.0 1500.0 4
07 09 04 12 00 280 5.0 1500.0 4

I am guessing that the numbers are indicating what the input file should look like but this is not clear what the fields are. Also I am using the linux version, but it looks like I have that program.

Thanks,
Anna

The sting of numbers is:
year month day hour minute wind direction wind speed PBL height and stability class