Time Unit with Descriptor Files

[Robin Kovach <kovach@xxxxxxxxxxxxxxxxxxxx>]

Hi again,

I am trying to us a descriptor file to link two data files together under one 
data set heading. I'm pretty sure that my problem lies in the way I define the 
time axis in either the netCDF files, the descriptor file, and/or the XML file.

The error is:

Adding an acceptable error string: "*** NOTE: ".
        NOAA/PMEL TMAP
        Program FERRET  
        Version 5.22 - 07/27/00
         7-Nov-01 10:14     

yes? cancel mode verify
yes? cancel mode interp
yes? canc data/all
yes? go std_initialize "/obs/NSIPP/MODEL/POSEIDON/GLOBAL/2D/link" "1" "1" 
"surfaceheight"
yes? set region/x="280":"380"/y="-30.0":"30.0"/k=1/t="16-Jan-1996":"16-Jan-1996"
yes? set win/size=.5
yes? set win/asp=0.9
yes? GO "/tmp/lasgo270355527954.jnl"
 **TMAP ERR: 1st timestep in datafile different from descriptor
             Expected: 15 Found: 1.5625
             Data set: /obs/NSIPP/MODEL/POSEIDON/GLOBAL/2D/link.des
             Data file: /obs/NSIPP/MODEL/POSEIDON/GLOBAL/2D/1997_2d.nc
 **TMAP ERR: 1st timestep in datafile different from descriptor
             Expected: 15 Found: 1.5625
             Data set: /obs/NSIPP/MODEL/POSEIDON/GLOBAL/2D/link.des
             Data file: /obs/NSIPP/MODEL/POSEIDON/GLOBAL/2D/1997_2d.nc
             
LAS site: http://mohawk.gsfc.nasa.gov/las/
             
So I have two files (1996_2d.nc and 1997_2d.nc) that have the same variables and 
the same LON and LAT grid. The TIME variable for both files is:
          
TIME = 366, 1096.48498535156, 1826.96997070312, 2557.455078125, 
    3287.93994140625, 4018.42504882812, 4748.91015625, 5479.39501953125, 
    6209.8798828125, 6940.365234375, 7670.85009765625, 8401.3349609375 ;
    
and for 1996_2d.nc     double TIME(TIME) ;
                       TIME:TIME_origin = "01-JAN-1996 00:00:00" ;
                       TIME:units = "hours since 1996-01-01 00:00:00" ;
                       
and for 1997_2d.nc     double TIME(TIME) ;
                       TIME:TIME_origin = "01-JAN-1997 00:00:00" ;
                       TIME:units = "hours since 1997-01-01 00:00:00" ;
                       
I also have copies of the descriptor file (link.des) and las.xml and     
POSEIDON_Global_2d.xml which you can access from     
http://mohawk.gsfc.nasa.gov/~kovach/LAS_Test_Pages.html

I've have looked at some example .des files and the archive help on "ui for 
single variable stored in multiple files"...

I am still a bit confused on the D_TOTIME adn D_TIME_UNIT used in the .des files 
and how they correspond with the S_START and S_END there and the TIME info for 
the grids in the .XML file.                 
                       
Thank you in advance!

Robin Kovach
kovach@mohawk.gsfc.nasa.gov