[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

time unit in CF-netCDF



Hi,

How to express the unit of an irregular period of time in the time coordinate variable in CF-netCDF? For example, for two 4-day periods: a) between 2007-01-01 and 2007-01-04; and b) between 2007-01-05 to 2007-01-08, which of the followings are correct?
1. time(time)=1,2 unit = "P 4 day since 2007-01-01"
2. time(time)=1,2 unit = "P4D since 2007-01-01"


There are names for regular time periods, such as week and fortnight, in udunits.dat. For irregular time period, such as 3 days 1 hours and 5 minutes, I am not sure if we should use ISO 8601 expression, "P1M3DT1H5M" or something like "P 1 month 3 day 1 hour 5 minute" as unit.

Thanks.

Wenli

===============================================================================
To unsubscribe thredds, visit:
http://www.unidata.ucar.edu/mailing-list-delete-form.html
===============================================================================


NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.