[CF-metadata] normalized_radar_backscatter_coefficient

From: Niedfeldt, John C <John.C.Niedfeldt>
Date: Tue, 22 Jul 2014 21:49:16 +0000

Dear all,
Hello again! About two months back I sent in a request, which is referenced below, in which I requested that we add the ?normalized_radar_backscatter_coefficient? in CF. Having heard nothing to the contrary, and seeing as no other standards name match our needs, we at PO.DAAC will be moving forward in implementing this new standard name.

As our newly reprocessed netCDF datasets shall soon serve as an online replacement for existing datasets already in use by hundreds of interdisciplinary scatterometry data users, we hope to likewise hear back from you soon as to whether there is consensus on our proposed standard name. If there is anything further we can do to build community consensus on our proposed standard name, please let me know.

Sincerely,
John

--
John Niedfeldt
Data Engineering
PO.DAAC, JPL
From: Lauret Olivier <olauret at cls.fr<mailto:olauret at cls.fr>>
Date: Friday, May 30, 2014 at 8:11 AM
To: "cf-metadata at cgd.ucar.edu<mailto:cf-metadata at cgd.ucar.edu>" <cf-metadata at cgd.ucar.edu<mailto:cf-metadata at cgd.ucar.edu>>
Cc: JPL <John.C.Niedfeldt at jpl.nasa.gov<mailto:John.C.Niedfeldt at jpl.nasa.gov>>
Subject: TR: normalized_radar_backscatter_coefficient
Hi all,
Just forwarding you some discussion we have with J. Niedfeldt about some standard name for sigma naught variable. I thought the available ?surface_backwards_scattering_coefficient_of_radar_wave? could be used considering some changes in the definition [in short I wish we could mix the description of sigma naught from radar altimetry with the one from scatterometers]. But it seems that the quantities are different enough to introduce a new standard name (see the message below).
Can we introduce  ?normalized_radar_backscatter_coefficient? in CF?
Thanks,
Olivier
De : Niedfeldt, John C (398M-Affiliate) [mailto:John.C.Niedfeldt at jpl.nasa.gov]
Envoy? : jeudi 29 mai 2014 21:26
? : Lauret Olivier
Objet : normalized_radar_backscatter_coefficient
Dear Mr. Olivier,
After discussion  with Dr. David Long of BYU and reviewing the current definition with him it was determined that we do in fact need a new variable. In microwave remote sensing the normalized radar cross section, sigma naught, is always produced from one angle of incidence and from one wavelength. I understand the desire to consolidate the number of standard names and to not have duplication, but adding this standard name would reduce confusion and error for many I believe. It is also general enough that we can add attributes to it in the future to allow further specification for various endeavors. If you have any more questions feel free to contact me and thank you again for your assistance. We changed the standard_name to be more descriptive.
standard_name:
normalized_radar_backscatter_coefficient
Definition:
normalized_radar_backscatter_coefficient is also called the normalized radar cross section, which are commonly used in the microwave remote sensing community.
Canonical Units:
1
Sincerely,
John Niedfeldt
Cliquez ici<https://www.mailcontrol.com/sr/2LOsaOXZrhvGX2PQPOmvUv46NwAC7+vkC1iVvWwtaJsvPofrofBkzx9EQlOBYQCJLRpx1D!2lTb1VsBVsOva5A==> si ce message est ind?sirable (pourriel).
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.cgd.ucar.edu/pipermail/cf-metadata/attachments/20140722/64cb3a5e/attachment.html>

Received on Tue Jul 22 2014 - 15:49:16 BST