Is ''A photometric measurement of' a critical part of the definition? I can imagine another magical technology that measures the intensity of the light in some other way. Well, I *can't* imagine the technology, but you know what I mean....
john
On Jan 12, 2011, at 00:36, Lowry, Roy K. wrote:
> Thanks Miles,
>
> Having read around a bit more I agree that the term luminance implies visible (ie wavelengths detected by the human eye) light and so 'luminance_in_air' would work, providing a suitable definition is included.
>
> My straw man proposal for a definition would be 'A photometric measurement of the intensity of visible light that passes through or is emitted from a given area'. Anyone anything better?
>
> Cheers, Roy.
>
> -----Original Message-----
> From: Miles Jordan [mailto:Miles.Jordan at aad.gov.au]
> Sent: 11 January 2011 23:56
> To: Lowry, Roy K.
> Cc: Jonathan Gregory; cf-metadata at cgd.ucar.edu
> Subject: RE: [CF-metadata] Ambient light [Sec=Unclassified]
>
> Thanks for your patience.
>
> I've asked what people think, and we have come up with a couple: surface_diffuse_luminance_of_shortwave_radiation_in_air or just luminance_of_shortwave_radiation_in_air.
>
> I don't think you can have luminance without diffuse reflection and I also don't think it can be a measurement of any other wavelength so it could be as simple as luminance_in_air. But I'll leave it up to the list to decide.
>
> Regards,
>
> Miles
>
>
> Lowry, Roy K. wrote:
>> Hi Miles,
>>
>> I would confirm with somebody who undestands the data before making
>> any decisions.
>>
>> Cheers, Roy.
>>
>> ________________________________________
>> From: Miles Jordan [Miles.Jordan at aad.gov.au]
>> Sent: 07 January 2011 12:07
>> To: Lowry, Roy K.
>> Cc: Jonathan Gregory; cf-metadata at cgd.ucar.edu
>> Subject: Re: [CF-metadata] Ambient light [Sec=Unclassified]
>>
>> Quite possibly. I will have to take your recommendation on that as I
>> am more on the software development side of things. Or shall I ask the
>> people from my end that understand the data better?
>>
>> Sounds ok to me though.
>>
>> Regards,
>>
>> Miles Jordan
>> miles at milesjordan.com
>> +61 424 879 668
>>
>> On 07/01/2011, at 8:35 PM, "Lowry, Roy K." <rkl at bodc.ac.uk> wrote:
>>
>>> Hi Miles,
>>>
>>> Should there be anything in the Standard Name to specify the
>> wavelengths of light detected in the measurement e.g.
>> luminous_intensity_of_shortwave_radiation_in air?
>>>
>>> Cheers, Roy.
>>>
>>> ________________________________________
>>> From: cf-metadata-bounces at cgd.ucar.edu
>>> [cf-metadata-bounces at cgd.ucar.edu] On Behalf Of Miles Jordan
>>> [Miles.Jordan at aad.gov.au]
>>> Sent: 07 January 2011 00:41
>>> To: 'Jonathan Gregory'
>>> Cc: cf-metadata at cgd.ucar.edu
>>> Subject: Re: [CF-metadata] Ambient light [Sec=Unclassified]
>>>
>>> Jonathan Gregory wrote:
>>>> Dear Miles
>>>>
>>>>> Just wondering if there is a standard name that I should use for
>>>> ambient light in air measured in candles; I can't see one for ambient
>>>> light, luminous intensity, or anything else I can think of.
>>>>
>>>> I don't think there is at present. Is "candle" the same as the SI
>>>> unit "candela"? Please propose a standard name if you would like
>> to.
>>>
>>> Yes, candela == candle. May I suggest luminous_intensity_in_air?
>>>
>>> Regards,
>>>
>>> Miles
>>>
>>>
>
>
>
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John Graybeal <mailto:jgraybeal at ucsd.edu>
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Received on Fri Jan 14 2011 - 19:23:05 GMT
