Re: [cf-satellite] request for sample CF complaint Satellite Datasets

• To: <cf-satellite@xxxxxxxxxxxxxxxx>
• Subject: Re: [cf-satellite] request for sample CF complaint Satellite Datasets
• From: Martin Raspaud <martin.raspaud@xxxxxxx>
• Date: Thu, 26 Apr 2012 21:29:24 +0200

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 26/04/12 04:41, ghansham sangar wrote:
> R/Sir
> 
> Are there any sample CF complaint satellite L1B (swath)
> multi-spectral datasets that demonstrate the way we put the band
> information along with their wavelengths and calibration
> information. There can be more than one calibration attached to a
> single band (like radiance and brightness temperature attached to
> IR channels).

Hi Ghansham,

I don't have any such data, but I guess we could do something like:


short ImageData(band, x, y);
  ImageData:coordinates = "band lat lon time wavelength";
  ImageData:valid_min = 1s;
  ImageData:_FillValue = 0s;
  ImageData:missing_value = 0s;
  ImageData:add_offset = 34.02f, 35.02f, 36.02f;
  ImageData:scale_factor = 1.54f, 1.64f, 1.74f;
  ImageData:radiance_formula = "ImageData * radiance_factor +
radiance_offset";
  ImageData:radiance_factor = 2.08f, 2.09f, 2.10f;
  ImageData:radiance_offset = 0.3f, 0.6f, 0.9f;
  ImageData:brightness_temperature_formula = "bt_offset + radiance *
bt_coef1 + radiance^2 * bt_coef2";
  ImageData:bt_offset = 1.0f, 1.5f, 1.8f;
  ImageData:bt_coef1 = 2.0f, 2.5f, 2.8f;
  ImageData:bt_coef2 = 3.0f, 3.5f, 3.8f;

Maybe we should add something like formula_terms also ? Or is there
something more general to describe formulas ?

Best regards,
Martin
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iQEcBAEBAgAGBQJPmaIUAAoJEBdvyODiyJI4krAIAL9pqt5Rs5JqyumUVliNKXqX
cceRvzCi9p5KK0trp1tFJaYZzSQS74M++ntMlzKZJpXDRSnlO61eRbT+NNNia/fI
sYgErE/msr3oQO3NDZ/p8i1l8sIrOaM1lkxeOxRaCXFlB4spXDllsNMefNv5lKoW
5NWhBzeRIKCAakxJZ8PZaYYB1sRJlx25BelwkxgAowpo6mow/Ci1jEVIUyFQesPx
x7dJx8qtPuOFgnmBEolxcY7svuk7zN3D/1p2E+i04fvh1pnCz3d++zl+WujNfimm
suyfgp2J/z4Z9RPNJFxWKIW9nK1k73udddWzj5gBNdtrckL42NlX9yjxDDCydQE=
=s+37
-----END PGP SIGNATURE-----

begin:vcard
fn:Martin Raspaud
n:Raspaud;Martin
org:SMHI
adr;quoted-printable;quoted-printable:;;Folkborgsv=C3=A4gen 
1;Norrk=C3=B6ping;;60176;Sweden
email;internet:martin.raspaud@xxxxxxx
title:Dr
tel;work:+46 (0)11 495 8261
tel;cell:+46 (0)11 495 8261
url:www.smhi.se
version:2.1
end:vcard

• Follow-Ups:
  • Re: [cf-satellite] request for sample CF complaint Satellite Datasets
    • From: ghansham sangar

• References:
  • [cf-satellite] request for sample CF complaint Satellite Datasets
    • From: ghansham sangar