Detail description of ARL packed meteorological data format

[glenn.rolph]

The description of the ARL packed data format is in the PC HYSPLIT help file. A pdf of the file is attached here.

[tianshui]

The description of the ARL packed data format is in the PC HYSPLIT help file. A pdf of the file is attached here.

if I want to write a ARL packed data,is there a fortran code?
What is the totating checkusm of the packed data meaning?
5PRSS 13 T02M 2 U10M 86 V10M 86 TPP6 84 1000.0 6HGTS189 TEMP 47 UWND201

VWND198 WWND241 RELH 40 925.00 6HGTS120 TEMP148 UWND211 VWND221 WWND181 RELH 2

4 850.00 6HGTS 76 TEMP 70 UWND 12 VWND108 WWND165 RELH 26 700.00 6HGTS 73 TEMP
Is it the integer after var?

[glenn.rolph]

You can use one of the PC HYSPLIT utilities for reading and writing meteorological data as a starting point for writing your own program. Try using the chk_data.f program in the /hysplit4/data2arl/source directory of the PC installation of HYSPLIT.