Dear Jonathan,
I'm also not an expert on this:
"GPS, Global Positioning System time, is the atomic time scale implemented by the atomic clocks in the GPS ground control stations and the GPS satellites themselves. GPS time was zero at 0h 6-Jan-1980 and since it is not perturbed by leap seconds GPS is now ahead of UTC by 16 seconds."
http://www.leapsecond.com/java/gpsclock.htm
a more detailed explanation:
https://confluence.qps.nl/display/KBE/UTC+to+GPS+Time+Correction
Thanks in advance,
Julien
>Jonathan Gregory j.m.gregory at reading.ac.uk
>Thu Apr 23 07:58:09 MDT 2015
>
>Dear Julien
>
>Could you explain what the difference is between GPS time and UTC (for a non-
>expert such as me)?
>
>Thanks
>
>Jonathan
De : Julien Demaria
Envoy? : jeudi 23 avril 2015 14:51
? : 'cf-metadata at cgd.ucar.edu'
Objet : How to define time coordinate in GPS?
Hi,
I need to define a time coordinate variable which use the GPS time referential instead of UTC, but I did not found how to specify this.
For the moment my variable look like this :
int64 time_stamp(rows) ;
time_stamp:standard_name = "time" ;
time_stamp:units = "microseconds since 2000-01-01 00:00:00" ;
time_stamp:_FillValue = -1L ;
Thanks in advance,
Julien
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <
http://mailman.cgd.ucar.edu/pipermail/cf-metadata/attachments/20150423/52893577/attachment.html>
Received on Thu Apr 23 2015 - 08:19:23 BST
