> Date: Fri, 30 Jul 2010 10:05:33 -0400 > From: Nan Galbraith <[email protected]> > Subject: Re: [CF-metadata] new standard_name: > surface_sea_water_velocity > To: [email protected] > Cc: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > > these both variables already exist: > > surface_eastward_sea_water_velocity and > > surface_northward_sea_water_velocity > > > > we are in the need of > > surface_sea_water_velocity > > > > In some cases, it's preferable to provide speed and direction rather > than vector velocities, at least for some current meters and anemometers > that measure the former directly. I'm not sure if or how that applies > to surface currents. > > I think the term requested may be surface_sea_water_speed, based on > reading the definitions and use of the terms velocity and speed in the > standard names table. A corresponding term for the direction would > probably be in order, direction_of_surface_sea_water_velocity. > > For (non-surface) currents, we have sea_water_speed and > direction_of_sea_water_velocity, plus a slew of vectors, including > eastward_ northward_ and upward_sea_water_velocity. There are > also x & y velocities, which may not require corresponding names for > surface data. > > Would it be useful, or possible, for the on-line standard name search > routine to return names containing 'speed' when 'velocity' is one of the > search terms? > > Nan > > -- > ******************************************************* > * Nan Galbraith (508) 289-2444 * > * Upper Ocean Processes Group Mail Stop 29 * > * Woods Hole Oceanographic Institution * > * Woods Hole, MA 02543 * > ******************************************************* >
The measurement in question were HF-Radar measurements. With a combination of different stations a surface velocity vector is measured. The measurements are stored as a grid in a netcdf file with the variables (standard names): surface_eastward_sea_water_velocity surface_northward_sea_water_velocity To visualize the measured data ncWMS/Godiva2 by Jon Blower is used. This tools takes the components and creates a new display variable surface_sea_water_velocity which is displayed as a vector. The automatically created vector surface_sea_water_velocity doesn't exist in the standard name table. It would be nice if this vector could be added to the standard name table. Gisbert ____________________________________________________ Dr. Gisbert Breitbach Institut für Küstenforschung Tel.: +49 4152 87 1563 Fax: +49 4152 87 4 1563 E-Mail: [email protected] GKSS-Forschungszentrum Geesthacht GmbH Max-Planck-Straße 1 21502 Geesthacht Deutschland/Germany Geschäftsführer/Board of Management: Prof. Dr. Wolfgang A. Kaysser, Dipl.-Ing. Michael Ganß Vorsitzender des Aufsichtsrates/Chairman of the Supervisory Board: Ministerialrat Wilfried Kraus Amtsgericht Lübeck HRB 285 GE (Register Court) Internet: http://www.gkss.de _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
