Re: [CF-metadata] COARDS - "positive" attribute

2011-07-26 Thread Jonathan Gregory
Dear Glenn The positive attribute hasn't been extended to data variables in CF because the standard name always implies the sign convention e.g. toa_net_downward_longwave_flux toa_net_upward_shortwave_flux The advantage of doing it is this way is that it is impossible for the sign convention t

Re: [CF-metadata] COARDS - "positive" attribute

2011-07-20 Thread John Graybeal
it correctly stated. What kind of questions were > you thinking would arise from the use of the "positive" attribute? > > Regards, > > Glenn > > From: John Graybeal [mailto:jbgrayb...@mindspring.com] > Sent: 20 July 2011 05:52 > To: Comiskey, Glenn &g

Re: [CF-metadata] COARDS - "positive" attribute

2011-07-20 Thread Comiskey, Glenn
the use of the "positive" attribute? Regards, Glenn From: John Graybeal [mailto:jbgrayb...@mindspring.com] Sent: 20 July 2011 05:52 To: Comiskey, Glenn Cc: cf-metadata@cgd.ucar.edu Subject: Re: [CF-metadata] COARDS - "positive" attribute Do you really need an attribute

Re: [CF-metadata] COARDS - "positive" attribute

2011-07-19 Thread John Graybeal
Do you really need an attribute here? Can you construct a scenario in which increasing values consistently represent a _lesser_ pressure/depth of water? Since the variable really is representing pressure, not depth of water, I think it's safe to say that increasing values of course represent in

Re: [CF-metadata] COARDS - "positive" attribute

2011-07-19 Thread John Caron
On 7/18/2011 3:42 AM, Comiskey, Glenn wrote: Hi, The COARDS covention mandates the use of the "positive" attribute for a vertical axis that is not a unit of pressure, i.e. if using metres to denote altitude. It further qualifies use of the "positive" attribute as a means of discovering vertica

[CF-metadata] COARDS - "positive" attribute

2011-07-19 Thread Comiskey, Glenn
Hi, The COARDS covention mandates the use of the "positive" attribute for a vertical axis that is not a unit of pressure, i.e. if using metres to denote altitude. It further qualifies use of the "positive" attribute as a means of discovering vertical coordinate variables, i.e. the convention stat