Re: [cf-satellite] cf-satellite prototype beta

• Subject: Re: [cf-satellite] cf-satellite prototype beta
• From: Martin Raspaud <martin.raspaud@xxxxxxx>
• Date: Tue, 10 Aug 2010 08:42:26 +0200

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john caron skrev:
> Hi Tom and all:
> 
> this seems like a good starting proposal to discuss. here are some
> issues from my POV:
> 
> 1)  "units(band)". I think if there are really different units, its
> probably a different variable. Do you have a concrete example where the
> units vary? Note also that "bands with different resolution" would also
> be a different variable (martin's question).
> 
> 2) what is the mechanism for associating the scale/offset to the imageData?
> 
> 3) you need
> 
> ImageData:coordinates = "band lat lon time"
> 
> maybe even
> 
> ImageData:coordinates = "band lat lon time wavelength"
> 
> 4) what is the meaning of band(band) ??

Hi all,

I'll make some comments on this post, even though I am maybe not the best 
qualified:

1) In the case of meteosat's (second generation) seviri instrument, we are
getting both visible bands as reflectances (unit:%) and ir bands as brightness
temperatures (units:K). They have the same properties exactly except for the 
unit.

3) I agree about your first suggestion (for storing a sequence of images for
example) but I don't understand the second one: isn't wavelength a
characteristic of the band ? Can you have several wavelength in one band ?


Best regards,
Martin
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• References:
  • [cf-satellite] cf-satellite prototype beta
    • From: Tom Whittaker
  • Re: [cf-satellite] cf-satellite prototype beta
    • From: john caron