examples that we use
5 days since 1960-01-01 calendar 365_days (to represent pentads, though we
understand pentads too)
1/365 years since 1960-01-01 calendar 365_days (equivalent to days in
365_day calendar)
1/360 years since 1960-01-01 calendar 360_days (equivalent to days in
360_day calendar)
1/12 years since 1960-01-01 calendar 360_days (the much maligned months)
months since 1960-01-01 calendar 360_days (just as a reminder -- it is
important to us, no matter how many people write to say months are
meaningless)
Thanks for asking,
Benno
On Fri, Mar 25, 2011 at 9:10 PM, John Caron <caron at unidata.ucar.edu> wrote:
> On 3/25/2011 6:36 PM, Benno Blumenthal wrote:
>
>
>
> On Fri, Mar 25, 2011 at 6:54 PM, John Caron <caron at unidata.ucar.edu>wrote:
>
>> On 3/22/2011 6:53 AM, John Caron wrote:
>>
>> Consider:
>>
>> int time(sample=1001);
>> :long_name = "Measurement time";
>> :standard_name = "time";
>> :units = "days since 1970-01-01";
>>
>> vs
>>
>> int time(sample=1001);
>> :long_name = "Measurement time";
>> :standard_name = "time";
>> :units = "3 days since 1970-01-01";
>>
>> values = 1, 2, 3, ...
>>
>> are these equivalent or does the second one mean every 3 days ? Is the
>> second one illegal ?
>>
>>
>> Im am going to assume that the second form is illegal, that is, you may
>> not have a number in front of the unit in a "time coordinate unit" (CF
>> section 4.4)
>>
>
> I wish you wouldn't. We use that all the time, though mostly for 365_day
> calendars.
>
> Benno
>
>
> could you give an example. do you ever use non-integers ?
>
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>
>
--
Dr. M. Benno Blumenthal benno at iri.columbia.edu
International Research Institute for climate and society
The Earth Institute at Columbia University
Lamont Campus, Palisades NY 10964-8000 (845) 680-4450
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