[CF-metadata] Why surface_altitude instead of platform_altitude?

2014-09-18 Thread Signell, Richard
In the CF-1.6 and CF-1.7 draft doc, in section H.2, we have: It is recommended that there should be station variables with standard_name attributes platform_name , surface_altitude and “ platform_id ” when applicable. Why is this surface_altitude instead of platform_altitude? In the ocean,

Re: [CF-metadata] Days of rain

2014-09-18 Thread Hollis, Dan
Hi all, Clearly there are pros and cons of both options. However after some discussion with colleagues here we decided that we'd go with the option of requesting a new standard name. I'd therefore like to request:

Re: [CF-metadata] Return periods

2014-09-18 Thread Hollis, Dan
Hi all, Following the various discussions in this thread I would like to request the following new standard name: precipitation_amount_converted_to_cumulative_probability With the following definition: Amount means mass per unit area. A variable whose standard name has the form

Re: [CF-metadata] Why surface_altitude instead of platform_altitude?

2014-09-18 Thread John Graybeal
Interesting that there is so little discussion of this language in the mail list, only in John Caron's 2011.09.16 mail on standard names for stations (which refers to words already in draft 1.6, I think) -- which came at the tail end of a long thread on platform names/IDs. From those words, I

Re: [CF-metadata] Days of rain

2014-09-18 Thread John Graybeal
Both these questions are about the boilerplate text, everything else seemed fine to me. In the sentence below, there is a typo the a. It must have a coordinate variable or scalar coordinate variable with the a standard name of X to supply the threshold(s). And in use, do I understand

Re: [CF-metadata] Why surface_altitude instead of platform_altitude?

2014-09-18 Thread Signell, Richard
Maybe a simpler approach would be to just adopt platform_altitude as an alias for surface_altitude and suggest deprecating the use of surface_altitude? On Thu, Sep 18, 2014 at 11:15 AM, John Graybeal john.grayb...@marinexplore.com wrote: Interesting that there is so little discussion of this

Re: [CF-metadata] Return periods

2014-09-18 Thread Ben Hetland
On 2014-09-09 Jonathan Gregory j.m.greg...@reading.ac.uk commented: You are right regarding the calculation - we are using a statistical model of the relationship between monthly rainfall and return period that was developed many years ago by a colleague from an analysis of 60 years of

Re: [CF-metadata] Why surface_altitude instead of platform_altitude?

2014-09-18 Thread John Graybeal
I assume surface_altitude is an important variable for providing the vertical location of measurements relative to a surface (as opposed to relative to a geoid -- notwithstanding the definition issue). John On Sep 18, 2014, at 08:30, Signell, Richard rsign...@usgs.gov wrote: Maybe a simpler

Re: [CF-metadata] Why surface_altitude instead of platform_altitude?

2014-09-18 Thread Signell, Richard
John, So then the surface needs to be defined relative to some known datum, no? Maybe we need platform_altitude_above_datum and a specification of the vertical datum (EPSG:5701 (MSL), EPSG:5703 (NAVD88), etc) On Thu, Sep 18, 2014 at 1:47 PM, John Graybeal john.grayb...@marinexplore.com wrote:

Re: [CF-metadata] Why surface_altitude instead of platform_altitude?

2014-09-18 Thread John Caron
As I recall, the original proposal was for station_altitude. We decided to change station to platform. At the same time it was thought that the existing standard name of surface altitude would be synonymous. I at least was thinking of ground stations. So I think we make a mistake there and

Re: [CF-metadata] IAGOS-CARIBIC parameters

2014-09-18 Thread Markus Fiebig
Hi Damien, thanks for taking the initiative on behalf of IGAS! I was looking through your list of proposed standard names and compared it to those I had proposed earlier as an initiative of the WMO GAW Scientific Advisory Group for Aerosol. Due to the process of iterating this list of names