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Hi, As mentioned in my Email 2 weeks ago, I attended the annual GSICS joint meeting attended by EUMETSAT, NOAA, NASA, CMA, JMA, and KMA; note our work here is visible to the WMO and CGMS. We discussed the process for submitting CF satellite standard name proposals and the already submitted proposed satellite CF standard names by NOAA and EUMETSAT, and here is what I can report. Based on our experience, the submission of satellite CF standard name proposals is a long, difficult and frustrating process. Feedback is often received that leave the proposed CF updates in limbo as questions, opinions and taste are presented that do not have an answer or solution without further discussion. In addition to this, the concept of providing a satellite vocabulary in the standard names guidelines would help with defining and clarifying the proposed satellite standard names. Therefore I suggest the following: 1. Feedback to proposals shall provide comments/opinions AND possible solutions to the issues raised in these comments/opinions to allow the submissions to be promptly reworked. Feedback leading to limbo state can be ignored (I’m sorry for the bluntness of this suggestion but we have to be efficient and pragmatic in how to use our time). 2. The following terms shall be included in the Guidelines for Construction of CF Standard Names (see: http://cf-pcmdi.llnl.gov/documents/cf-standard-names/guidelines). I suggest a new section under Chemical Species called “Satellite Names and Phrases” Satellite Names and Phrases The following names are used to identify data acquired from satellites in the CF satellite standard names conventions. Name Alternative Name Comment satellite platform The object on which the instruments/sensors are attached. instrument sensor The observing device, mounted on the satellite/platform. detector The element of the instrument observing a specific band. band channel The spectral region covered by the observation. Channel may be used as a subset within a band. Phrase Meaning – Please provide a better definition if you can. satellite_point The absolute latitude and longitude of the satellite/platform. measurement_point The geo-referenced latitude and longitude onto a standard coordinate system where the measurement is taken. toa top of atmosphere – see Surface in the Qualifications section for more information. Other suggestions are welcome. For the proposed names submitted by EUMETSAT, the re-worked versions are to split them into 3 separate submissions to allow easier acceptance and these are as follows: Submission 1 (Satellite / Platform related): azimuth_angle * degrees * Azimuth angle is the angle measured towards the east, from north, along the astronomical horizon to the intersection of the great circle passing through the point and the astronomical zenith with the astronomical horizon. platform_measurement_latitude * degrees_north * Latitude of the data acquired at the measurement point – coordinate system shall be defined in the variable comment attribute. platform_measurement_longitude * degrees_east * Longitude of the data acquired at the measurement point – coordinate system shall be defined in the variable comment attribute. platform_measurement_altitude * m * Altitude of the platform above mean sea level. Submission 2 (Band related): band_spectral_width * cm-1 * Bandwidth of the spectral channel taken by the detector Submission 3 (Top of Atmosphere related): toa_spectral_irradiance * mW m-2 (cm-1)-1 * Irradiance which is relevant for any sensor measuring in the UV-VIS and NIR. This parameter is reported by integrating over the whole sphere. toa_spectral_reflectance * 1 (dimensionless) * Ratio of radiance to irradiance I/I0, reflection from a thick layer where the layer, here the atmosphere, is part of the reflection's property. toa_outgoing_inband_radiance * mW m-2 sr-1 * "outgoing" means emitted toward outer space; the radiance is integrated over a discrete band. toa_reflectance * 1 * Reflectance is the ratio of the energy of the reflected to the incident radiation at the top of atmosphere. A coordinate variable of radiation_wavelength or radiation_frequency can be used to specify the wavelength or frequency respectively, of the radiation. If no major issues (note issues should come with suggested solutions) on the proposals have been received within two weeks, I will assume we as a community think the proposals would benefit users and developers of satellite data, and I shall submit them for official acceptance. Regards, Peter Miu Data Services Operations Engineer EUMETSAT EUMETSAT Allee 1 64295 Darmstadt Germany Tel: +49 6151 807 3290 Fax: +49 6151 807 7410 Email: peter.miu@xxxxxxxxxxxx<mailto:peter.miu@xxxxxxxxxxxx> Web: http://www.eumetsat.int Follow EUMETSAT on Twitter https://twitter.com/@eumetsat_users Ordering Data from EUMETSAT https://eoportal.eumetsat.int/ -----Original Message----- From: cf-satellite-bounces@xxxxxxxxxxxxxxxx [mailto:cf-satellite-bounces@xxxxxxxxxxxxxxxx] On Behalf Of cf-satellite-request@xxxxxxxxxxxxxxxx Sent: Wednesday, February 27, 2013 8:00 PM To: cf-satellite@xxxxxxxxxxxxxxxx Subject: cf-satellite Digest, Vol 28, Issue 10 Send cf-satellite mailing list submissions to cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx> To subscribe or unsubscribe via the World Wide Web, visit http://mailman.unidata.ucar.edu/mailman/listinfo/cf-satellite or, via email, send a message with subject or body 'help' to cf-satellite-request@xxxxxxxxxxxxxxxx<mailto:cf-satellite-request@xxxxxxxxxxxxxxxx> You can reach the person managing the list at cf-satellite-owner@xxxxxxxxxxxxxxxx<mailto:cf-satellite-owner@xxxxxxxxxxxxxxxx> When replying, please edit your Subject line so it is more specific than "Re: Contents of cf-satellite digest..." Today's Topics: 1. Re: cf-satellite Digest, Vol 28, Issue 9 (Peter Miu) ---------------------------------------------------------------------- Message: 1 Date: Wed, 27 Feb 2013 09:55:22 +0100 From: Peter Miu <Peter.Miu@xxxxxxxxxxxx<mailto:Peter.Miu@xxxxxxxxxxxx>> To: "'cf-satellite@xxxxxxxxxxxxxxxx'" <cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx>> Subject: Re: [cf-satellite] cf-satellite Digest, Vol 28, Issue 9 Message-ID: <354F36C3E59AE94285336EF9BD449F6F452B8A24@xxxxxxxxxxxxxxxxxxxxxxxxxxx<mailto:354F36C3E59AE94285336EF9BD449F6F452B8A24@xxxxxxxxxxxxxxxxxxxxxxxxxxx>> Content-Type: text/plain; charset="Windows-1252" Hi all, Just to provide you with an update. I have received inputs on the proposed CF standard names and units from: - Mike Grant. - Jim Biard. - Randy Horne. I am attending the GSICS joint meeting next week and I shall discuss the proposals and these inputs with the GSICS Data working group members (NOAA, NASA, JMA, CMA, KMA, etc.). I will then compile updates, discuss these with our EUMETSAT WMO representative and present it on this list again before submission to the CF TRAC (expected due date is mid - end of March). Regards, Peter Miu. -----Original Message----- From: cf-satellite-bounces@xxxxxxxxxxxxxxxx<mailto:cf-satellite-bounces@xxxxxxxxxxxxxxxx> [mailto:cf-satellite-bounces@xxxxxxxxxxxxxxxx] On Behalf Of cf-satellite-request@xxxxxxxxxxxxxxxx<mailto:cf-satellite-request@xxxxxxxxxxxxxxxx> Sent: Saturday, February 23, 2013 8:00 PM To: cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx> Subject: cf-satellite Digest, Vol 28, Issue 9 Send cf-satellite mailing list submissions to cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx> To subscribe or unsubscribe via the World Wide Web, visit http://mailman.unidata.ucar.edu/mailman/listinfo/cf-satellite or, via email, send a message with subject or body 'help' to cf-satellite-request@xxxxxxxxxxxxxxxx<mailto:cf-satellite-request@xxxxxxxxxxxxxxxx> You can reach the person managing the list at cf-satellite-owner@xxxxxxxxxxxxxxxx<mailto:cf-satellite-owner@xxxxxxxxxxxxxxxx> When replying, please edit your Subject line so it is more specific than "Re: Contents of cf-satellite digest..." Today's Topics: 1. Re: cf-satellite Digest, Vol 28, Issue 5 (Mike Grant) ---------------------------------------------------------------------- Message: 1 Date: Fri, 22 Feb 2013 19:20:38 +0000 From: Mike Grant <mggr@xxxxxxxxx<mailto:mggr@xxxxxxxxx>> To: Jim Biard <jim.biard@xxxxxxxx<mailto:jim.biard@xxxxxxxx>> Cc: "cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx>" <cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx>> Subject: Re: [cf-satellite] cf-satellite Digest, Vol 28, Issue 5 Message-ID: <5127C506.3070107@xxxxxxxxx<mailto:5127C506.3070107@xxxxxxxxx>> Content-Type: text/plain; charset="ISO-8859-1" On 20/02/13 17:52, Jim Biard wrote: > This issue with altitude is exactly why it is critical to include the > geographic coordinate system used - both the horizontal and vertical > datum. That's where the issue lies. It's not with the concept of > altitude, per se. This is the key point, but I think it's perhaps one that's a general issue for the CF guys to sort out rather than something we need to deal with when proposing a standard name. One could include a short snippet in the description along the lines of "For this variable to be meaningful, it must be associated with a {horizontal|vertical} datum.". Again, one should approach this point carefully as it's likely to cause a torrent of discussion and bog that name down in a swamp of difficulties. At the least, try to isolate it from others or, if the discussion starts, try your hardest to separate the datum issue into another thread separate from the name proposal! > This can be quite a mess to navigate through, and I appreciate you and > Aleksandar's (and others!) efforts to develop these standard names! Hear hear! Cheers, Mike. -- PGP: 0xD4925D35 (5A17 756C 3F78 27DB C641 F50C 05EC 4F23 D492 5D35) Latest news: www.pml.ac.uk<http://www.pml.ac.uk> and @PlymouthMarine Plymouth Marine Laboratory (PML) is a company limited by guarantee registered in England & Wales, company number 4178503. Registered Charity No. 1091222. Registered Office: Prospect Place, The Hoe, Plymouth PL1 3DH, UK. This message is private and confidential. If you have received this message in error, please notify the sender and remove it from your system. You are reminded that e-mail communications are not secure and may contain viruses; PML accepts no liability for any loss or damage which may be caused by viruses. ------------------------------ _______________________________________________ cf-satellite mailing list cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx> For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/ End of cf-satellite Digest, Vol 28, Issue 9 ******************************************* ------------------------------ _______________________________________________ cf-satellite mailing list cf-satellite@xxxxxxxxxxxxxxxx<mailto:cf-satellite@xxxxxxxxxxxxxxxx> For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/ End of cf-satellite Digest, Vol 28, Issue 10 ********************************************
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