[Go-essp-tech] DRS question - temporal subset

[Estanislao Gonzalez]

Hi all,

This is what the DRS reference says:
"Temporal Subsets: Time instants and periods (N1(-N2))

Time instants and periods will be represented by 
‘yyyy[mm[dd[hh][mm]]][-clim]’, where ‘yyyy’,
‘mm’, ‘dd’, ‘hh’ ‘mm’ are integer year, month, day, hour, and minute, 
respectively, and enough
(and just enough) of the suffixes should be added to unambiguously 
resolve the interval between
time-samples contained in the file or virtual file URL. (For example, 
monthly mean data would
include “mm”, but not “dd”, “hh”, or “mm”; “subhr” data would include 
all suffixes.) The
optional “-clim” is appended when the file contains a climatology. For 
example, a file with
sampling frequency of “mo” and the time designation 196001-198912-clim 
represents the
monthly mean climatology (12 time values) computed for the period 
extending from 1/1960-
12/1989. Note that the DRS does not explicitly specify the calendar type 
(e.g., Julian,
Gregorian), but the calendar will be indicated by one of the attributes 
in each netCDF file."[1]

 From the title I infer that only the start point is required as part of 
the temporal subset, though the text speaks about "enough information to 
unambiguously resolve the interval between
time-samples".

The problem is that I get 3hr and subhr data with only the starting 
time-stamp, the drslib cannot cope with this.
Should the drslib be adapted to accept that case or all files renamed?

What about the rest of the system? Have anyone already tried publishing 
such files? Make sense?
And what was the intention with the parenthesis in the Temporal Subsets 
title?

Thanks,
Estani

[1] - http://cmip-pcmdi.llnl.gov/cmip5/docs/cmip5_data_reference_syntax.pdf

-- 
Estanislao Gonzalez

Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany

Phone:   +49 (40) 46 00 94-126
E-Mail:  gonzalez at dkrz.de