[thredds] trying to serve multiple netcdf files

• To: thredds@xxxxxxxxxxxxxxxx
• Subject: [thredds] trying to serve multiple netcdf files
• From: Bernhard Giner <giner@xxxxxxxxxxxxxxxxx>
• Date: Fri, 21 Dec 2007 11:05:47 +0100

Hi all,

I am relatively new to thredds.
I try to serve data which is segmented in many .nc files. Each .nc file 
represents one month. 
the starttime is e.g. January 1. 2000 0:00 there are about 10000 timesteps 
every 5 hours over all the files, the timesteps are integers. Now I try to 
rearrange them into date unit.
this is what I've tried so far:

                <dataset name="ACETO2" ID="eval19/ACETO2" 
urlPath="eval19/ACETO2">
                        <serviceName>gridded</serviceName>
                        <dataType>Grid</dataType>
                
                        <netcdf 
xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
                                <dimension name="time" length="10220"/>
                                <variable name="time" type="int" shape="time">
                                        <attribute name="units" value="Hours 
since 2000-01-00 00:00"/>
                                        <attribute name="_CoordinateAxisType" 
value="Time" />
                                        <values start="0" increment="5" 
npts="10220" />
                                </variable>
                                
                                <aggregation dimName="time" type="joinExisting">
                                        <variableAgg name="T"/>
                                        <scan 
location="/data/projects/MESSy1.1/eval19/ACETO2/" suffix=".nc" />
                                </aggregation>
                
                        </netcdf>
                </dataset>

but i still get integers as timesteps... 
we used to use descriptor files for this data for internal use (e.g. ferret). 
they look like that:
--------
 &FORMAT_RECORD
     D_TYPE        = '  MC',
     D_FORMAT      = '  1A',
     D_SOURCE_CLASS       = 'MODEL OUTPUT',
 /
 &BACKGROUND_RECORD
      D_EXPNUM      = '0001',
      D_TITLE       = 'eval19',
      D_T0TIME      = '01-Jan-1998 00:00:00',
      D_TIME_UNIT   = 3600,
      D_TIME_MODULO = .FALSE.,
 /
 &MESSAGE_RECORD
      D_MESSAGE     = ' ',
      D_ALERT_ON_OPEN      = F,
      D_ALERT_ON_OUTPUT    = F,
 /
 &EXTRA_RECORD
 /
 &STEPFILE_RECORD
       s_filename    
= '/data/projects/MESSy1.1/eval19/ACETO2/ACETO2_200001.nc',
       S_START       = 17520,
       S_END  = 18260,
       S_DELTA       = 5,
       S_NUM_OF_FILES       = 1,
       S_REGVARFLAG  = ' ',
 /
 &STEPFILE_RECORD
       s_filename    
= '/data/projects/MESSy1.1/eval19/ACETO2/ACETO2_200002.nc',
       S_START       = 18265,
       S_END  = 18955,
       S_DELTA       = 5,
       S_NUM_OF_FILES       = 1,
       S_REGVARFLAG  = ' ',
 /
(...)
-----------
what can I do to serve this data via thredds in a "readable" format?
thank you in advance
Bernhard
-- 
Max Planck Institute for Chemistry
Department of Atmospheric Chemistry
Joh.-Joachim-Becher-Weg 27, D-55128 Mainz 
P.O. Box 3060, 55020 Mainz, Germany
Phone: (+49 6131) 305 - 449
Fax: (+49) (0)6131 305 - 436