Hi David: I was unaware of these, thanks. This makes all the more important to look at the new HDF5 virtual datasets, which are basically virtual aggregations, in the sense of making sure that there is some harmonization. This is a new feature, and nows the time to make certain, if at all possible, that CF aggregation rules can be successfully implemented in the new virtual files.
-Roy > On Mar 31, 2016, at 4:39 AM, David Hassell <[email protected]> wrote: > > Hi David, > > The proposed CF aggregation rules > (http://cf-trac.llnl.gov/trac/ticket/78, > http://www.met.reading.ac.uk/~david/cf_aggregation_rules.html) have > been designed to aggregate *any* CF-compliant datasets, where > appropriate. I would be very interested in looking at the metadata of > some of your files to (hopefully!) confirm this in your use case. > > A netCDF schema for storing the results of such aggregations has also > bee developed (http://www.met.reading.ac.uk/~david/cfa/0.4/). > > As far as I'm aware, there's not yet much software which understands > these frameworks, apart from cf-python. > > All the best, > > David > > ---- Original message from Moroni, David F (398G) (12AM 29 Mar 16) > >> Date: Tue, 29 Mar 2016 00:01:00 +0000 >> From: "Moroni, David F (398G)" <[email protected]> >> To: Steve Hankin <[email protected]>, Ethan Davis <[email protected]>, >> CF metadata <[email protected]>, netCDF SWG >> <[email protected]> >> Subject: Re: [CF-metadata] Meeting invite: Advancing netCDF-CF, 24-26 May >> 2016, Boulder, CO, USA >> user-agent: Microsoft-MacOutlook/14.6.2.160219 >> >> Hi Ethan, >> >> I’m glad Steve brought up the “aggregation” topic. On this topic, it would >> be interesting to see if anyone has successfully come up with a standardized >> schema to aggregate satellite-derived Level 2 swath grid structures. >> >> I know there’s an aggregation implementation in the latest OPeNDAP release, >> but it remains to be seen what this might look like for Level 2 (and perhaps >> even Level 1) swath grid structured datasets. I don’t know of anyone who’s >> successfully tested and released an operationally working instance of that >> part of OPeNDAP for swath grid structured datasets. >> >> Cheers, >> David >> >> From: CF-metadata >> <[email protected]<mailto:[email protected]>> >> on behalf of Steve Hankin >> <[email protected]<mailto:[email protected]>> >> Date: Monday, March 28, 2016 at 9:25 AM >> To: Ethan Davis <[email protected]<mailto:[email protected]>>, CF metadata >> <[email protected]<mailto:[email protected]>>, netCDF SWG >> <[email protected]<mailto:[email protected]>> >> Subject: Re: [CF-metadata] Meeting invite: Advancing netCDF-CF, 24-26 May >> 2016, Boulder, CO, USA >> >> Ethan, >> >> Two more topics to consider as additions to your list: >> >> 1. "UGRID" -- Of interest to the coastal ocean modeling community, and stuck >> in a holding pattern for quite a long time, is the harmonization of >> mesh/unstructured grid coordinates into the main body of CF. The work is >> mostly completed ... >> >> 2. "Aggregation" -- CF structures to link multiple files into larger >> conceptual datasets. Time series aggregations, union aggregations >> (associated variables in separate files), and ensemble membership are the >> most obvious applications of this. Another important application is "tiled >> grids" (ref. the "gridspec" proposal). >> >> - Steve >> >> ============================================ >> >> On 3/27/2016 9:24 PM, Ethan Davis wrote: >> Hi all, >> >> As some of you have heard, we are holding a meeting to discuss current and >> future netCDF-CF efforts and directions. The meeting will be held on 24-26 >> May 2016 in Boulder, CO, USA at the UCAR Center Green facility. >> >> This meeting is organized by the “Advancing netCDF-CF for Geoscience” >> project [1] which has been funded by the US NSF EarthCube program. The >> project goals include several specific CF development efforts, both >> standards development and software prototyping. (We are just starting to >> spin-up community conversations around these specific goals for drafting CF >> extensions.) Another aspect of the funded project is community engagement >> including with the existing CF community, geoscience domains that have not >> been very involved in CF, and other standards bodies (e.g., OGC). These and >> other topics are on the current list of possible agenda items. Please let us >> know if you have other agenda items in mind. >> >> The current list of possible agenda items includes: >> >> * Investigate using features of the netCDF enhanced data model to >> improve/simplify the CF Discrete Sampling Geometries (which includes point, >> sounding, and trajectory data types) >> * Drafting a CF enhancement that would add support for complex data >> footprints (e.g., river segments and drainage basins) >> * Further develop the CFRadial proposal for representing Radar data >> * Adding features to better support satellite data >> * Adding CF support for hierarchical groups for organizing data and >> metadata >> * Enhancing CF to support Linked Data / semantic technology concepts >> * Harmonizing CF grid mapping with OGC CRS (coordinate reference >> systems), possibly with WKT >> * Adding CF support for attribute namespaces and the use of URI prefixes >> in attribute values >> * Improved support for dimensionless data variables, logarithmic scales, >> differences, etc. >> >> While we wish we could host all those interested in attending, given the >> available meeting space and the number of project participants, we are >> asking members of the CF community that are interested in attending to >> contact us directly and let us know which aspects of CF are of interest to >> you and your goals for the meeting. Please submit your expressions of >> interest by Monday, 4 April 2016. We plan to invite participants by Friday, >> 8 April 2016. >> >> Travel and other information will be on the meeting page [2] later this week. >> >> Also, for anyone attending EGU in Vienna in April, we will have a splinter >> meeting (SMP32) to discuss netCDF-CF. The splinter meeting will be held on >> Thursday, 21 April 2016 at 15:30 in room 2.96. >> >> Thank you, >> >> Meeting Organizers >> >> Ethan Davis, UCAR Unidata >> Charlie Zender, Univ of CA, Irvine >> David Arctur, Univ of TX, Austin >> Dave Santek, Univ of WI, Madison / SSEC >> Kevin O’Brien, Univ of WA/JISAO and NOAA/PMEL >> Aleksandar Jelenak, The HDF Group >> Mike Dixon, NCAR/EOL >> >> [1] http://www.nsf.gov/awardsearch/showAward?AWD_ID=1541031 >> >> [2] http://www.unidata.ucar.edu/events/2016CFWorkshop/ >> >> >> >> _______________________________________________ >> CF-metadata mailing list >> [email protected]<mailto:[email protected]>http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata >> > >> _______________________________________________ >> CF-metadata mailing list >> [email protected] >> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > > > -- > David Hassell > National Centre for Atmospheric Science (NCAS) > Department of Meteorology, University of Reading, > Earley Gate, PO Box 243, > Reading RG6 6BB, U.K. > > Tel : +44 118 3785613 > E-mail: [email protected] > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata ********************** "The contents of this message do not reflect any position of the U.S. Government or NOAA." ********************** Roy Mendelssohn Supervisory Operations Research Analyst NOAA/NMFS Environmental Research Division Southwest Fisheries Science Center ***Note new address and phone*** 110 Shaffer Road Santa Cruz, CA 95060 Phone: (831)-420-3666 Fax: (831) 420-3980 e-mail: [email protected] www: http://www.pfeg.noaa.gov/ "Old age and treachery will overcome youth and skill." "From those who have been given much, much will be expected" "the arc of the moral universe is long, but it bends toward justice" -MLK Jr. _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
