Thanks for the heads up Jonathan.. I personally feel like there is some duplication in the notation below.. and I'd prefer to use a "standard" *_change suffix for data that I create, and then abide by the conventions regarding time/climatology attributes to describe these..
What specifically do I need to do to propose this *_change suffix as a new standard.. Should I move/replicate this thread across to the CF Trac Website? Cheers, P -----Original Message----- From: Jonathan Gregory [mailto:[email protected]] Sent: Friday, March 25, 2011 5:02 AM To: Durack, Paul (CMAR, Hobart) Cc: [email protected] Subject: Re: [CF-metadata] [Standard name request] property changes over time Dear Paul I think this is more systematic than you suspect! * It is only sea level change with has _change at the end. These quantities only have meaning as "change", not as an absolute quantity. So the "change" there is part of the name of the basic quantity. * change_[over_X_]in is a prefix which indicates the difference in quantity between two circumstances, such as two times. * tendency_in is a prefix which indicates the time-derivative of the quantity. It has the units of the quantity multiplied by reciprocal time. The period over which a time-change or tendency is calculated is indicated by the time bounds or climatological bounds. If it's an instantaneous tendency, it applies at the time coordinate. This distinction is indicated by cell_methods. Best wishes Jonathan _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
