Re: [CF-metadata] Proposal for standard name "snow_cover_binary_mask"

[Jim Biard]

Ute,

It is a good concept.  As best as I understand it (I'm still learning), the 
existing grammar for standard names doesn't allow a qualifier of this sort.  
Qualifiers are not allowed to change the units of a quantity, for one thing, 
and a binary mask qualifier doesn't fit into any of the existing qualifier 
categories.  That doesn't mean one can't be developed, but the usual way this 
is handled is to just request a new standard name.

Grace and peace,

Jim

Jim Biard
Research Scholar
Cooperative Institute for Climate and Satellites
Remote Sensing and Applications Division
National Climatic Data Center
151 Patton Ave, Asheville, NC 28801-5001

jim.bi...@noaa.gov
828-271-4900

On Sep 5, 2012, at 1:40 PM, Ute Brönner  wrote:

> Hei,
> Wouldn't that feature come in handy for other grids as well where we would 
> like to mark sth. like "exposed" or "not exposed"? So I would suggest to make 
> it snow independent.
> 
> Regards,
> Ute
> 
> 
> Am 05.09.2012 um 18:31 schrieb "Jim Biard" 
> mailto:jim.bi...@noaa.gov>>:
> 
> Hi.
> 
> I'd like to propose the new standard name "snow_cover_binary_mask".  There is 
> a NOAA snow coverage extent product that is being put into netCDF format.  
> The product is derived from the IMS Daily Northern Hemisphere Snow & Ice 
> Analysis.  It is a grid in which cells are marked as snow-covered or not 
> snow-covered.  The GCMD already has the keywords "Cryosphere > Snow/Ice > 
> Snow Cover" and "Terrestrial Hydrosphere > Snow/Ice > Snow Cover", which are 
> applied to the source product.
> 
> In this particular product, grid cells are marked as snow-covered when > 42% 
> of the cell indicates the presence of snow.
> 
> I'd appreciate any thoughts or comments.
> 
> Grace and peace,
> 
> Jim
> 
> Jim Biard
> Research Scholar
> Cooperative Institute for Climate and Satellites
> Remote Sensing and Applications Division
> National Climatic Data Center
> 151 Patton Ave, Asheville, NC 28801-5001
> 
> jim.bi...@noaa.gov
> 828-271-4900
> 
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> CF-metadata mailing list
> CF-metadata@cgd.ucar.edu
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Re: [CF-metadata] Proposal for standard name "snow_cover_binary_mask"

[Lowry, Roy K.]

Suggestion 'presence_of_surface_snow' should have been 
'presence_of_surface_snow_cover' to maintain consistency

From: CF-metadata [cf-metadata-boun...@cgd.ucar.edu] On Behalf Of Lowry, Roy K. 
[r...@bodc.ac.uk]
Sent: 05 September 2012 19:49
To: Ute Brönner; Jim Biard
Cc: Heather Brown; Raymond Nepstad; cf-metadata@cgd.ucar.edu; Alisa Young
Subject: Re: [CF-metadata] Proposal for standard name "snow_cover_binary_mask"

Dear All,

It's becoming clear that we need a Standard Name component to cover boolean 
values whose trigger point may then be specified elsewhere as Jonathan stated.  
In the biological domain, the syntax 'presence_of_x' where x is a taxon name is 
often used.  Could this be adopted giving the Standard Name 
'presence_of_surface_snow' for Jim and opening the door for a raft of Standard 
Names to cover Ute's use case?

Cheers, Roy.


From: CF-metadata [cf-metadata-boun...@cgd.ucar.edu] On Behalf Of Ute Brönner 
[ute.broen...@sintef.no]
Sent: 05 September 2012 18:40
To: Jim Biard
Cc: Heather Brown; Raymond Nepstad; cf-metadata@cgd.ucar.edu; Alisa Young
Subject: Re: [CF-metadata] Proposal for standard name "snow_cover_binary_mask"

Hei,
Wouldn't that feature come in handy for other grids as well where we would like 
to mark sth. like "exposed" or "not exposed"? So I would suggest to make it 
snow independent.

Regards,
Ute


Am 05.09.2012 um 18:31 schrieb "Jim Biard" 
mailto:jim.bi...@noaa.gov>>:

Hi.

I'd like to propose the new standard name "snow_cover_binary_mask".  There is a 
NOAA snow coverage extent product that is being put into netCDF format.  The 
product is derived from the IMS Daily Northern Hemisphere Snow & Ice Analysis.  
It is a grid in which cells are marked as snow-covered or not snow-covered.  
The GCMD already has the keywords "Cryosphere > Snow/Ice > Snow Cover" and 
"Terrestrial Hydrosphere > Snow/Ice > Snow Cover", which are applied to the 
source product.

In this particular product, grid cells are marked as snow-covered when > 42% of 
the cell indicates the presence of snow.

I'd appreciate any thoughts or comments.

Grace and peace,

Jim

Jim Biard
Research Scholar
Cooperative Institute for Climate and Satellites
Remote Sensing and Applications Division
National Climatic Data Center
151 Patton Ave, Asheville, NC 28801-5001

jim.bi...@noaa.gov<mailto:jim.bi...@noaa.gov>
828-271-4900

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Re: [CF-metadata] Proposal for standard name "snow_cover_binary_mask"

[Lowry, Roy K.]

Dear All,

It's becoming clear that we need a Standard Name component to cover boolean 
values whose trigger point may then be specified elsewhere as Jonathan stated.  
In the biological domain, the syntax 'presence_of_x' where x is a taxon name is 
often used.  Could this be adopted giving the Standard Name 
'presence_of_surface_snow' for Jim and opening the door for a raft of Standard 
Names to cover Ute's use case?

Cheers, Roy.


From: CF-metadata [cf-metadata-boun...@cgd.ucar.edu] On Behalf Of Ute Brönner 
[ute.broen...@sintef.no]
Sent: 05 September 2012 18:40
To: Jim Biard
Cc: Heather Brown; Raymond Nepstad; cf-metadata@cgd.ucar.edu; Alisa Young
Subject: Re: [CF-metadata] Proposal for standard name "snow_cover_binary_mask"

Hei,
Wouldn't that feature come in handy for other grids as well where we would like 
to mark sth. like "exposed" or "not exposed"? So I would suggest to make it 
snow independent.

Regards,
Ute


Am 05.09.2012 um 18:31 schrieb "Jim Biard" 
mailto:jim.bi...@noaa.gov>>:

Hi.

I'd like to propose the new standard name "snow_cover_binary_mask".  There is a 
NOAA snow coverage extent product that is being put into netCDF format.  The 
product is derived from the IMS Daily Northern Hemisphere Snow & Ice Analysis.  
It is a grid in which cells are marked as snow-covered or not snow-covered.  
The GCMD already has the keywords "Cryosphere > Snow/Ice > Snow Cover" and 
"Terrestrial Hydrosphere > Snow/Ice > Snow Cover", which are applied to the 
source product.

In this particular product, grid cells are marked as snow-covered when > 42% of 
the cell indicates the presence of snow.

I'd appreciate any thoughts or comments.

Grace and peace,

Jim

Jim Biard
Research Scholar
Cooperative Institute for Climate and Satellites
Remote Sensing and Applications Division
National Climatic Data Center
151 Patton Ave, Asheville, NC 28801-5001

jim.bi...@noaa.gov<mailto:jim.bi...@noaa.gov>
828-271-4900

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it is exempt from release under the Act. Any material supplied to
NERC may be stored in an electronic records management system.
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Re: [CF-metadata] Proposal for standard name "snow_cover_binary_mask"

[Ute Brönner]

Hei,
Wouldn't that feature come in handy for other grids as well where we would like 
to mark sth. like "exposed" or "not exposed"? So I would suggest to make it 
snow independent.

Regards,
Ute


Am 05.09.2012 um 18:31 schrieb "Jim Biard" 
mailto:jim.bi...@noaa.gov>>:

Hi.

I'd like to propose the new standard name "snow_cover_binary_mask".  There is a 
NOAA snow coverage extent product that is being put into netCDF format.  The 
product is derived from the IMS Daily Northern Hemisphere Snow & Ice Analysis.  
It is a grid in which cells are marked as snow-covered or not snow-covered.  
The GCMD already has the keywords "Cryosphere > Snow/Ice > Snow Cover" and 
"Terrestrial Hydrosphere > Snow/Ice > Snow Cover", which are applied to the 
source product.

In this particular product, grid cells are marked as snow-covered when > 42% of 
the cell indicates the presence of snow.

I'd appreciate any thoughts or comments.

Grace and peace,

Jim

Jim Biard
Research Scholar
Cooperative Institute for Climate and Satellites
Remote Sensing and Applications Division
National Climatic Data Center
151 Patton Ave, Asheville, NC 28801-5001

jim.bi...@noaa.gov
828-271-4900

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