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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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> Geopotential has units of m2/s2. > > Yes it is about 1 degree. > But maybe I wanted the MERRA dataset to have the surface height that > goes with all the other MERRA datasets fields, on the same grid. > What do you suggest? > I don't think you want to fix this dataset. > Loading GFS, on another grid and with many fields at incompatible times, > would be confusing for future users of my MERRA bundles. > You can always hide the time of specific display. This is easy. > > Is there a fast topographic data server somewhere I should use instead? > Does it work easily, trying to drape MERRA fields over a different surface > topography grid? > Here is the link: http://www.ngdc.noaa.gov/mgg/bathymetry/ Yuan > > Thanks, > Brian > > > On Sep 30, 2013, at 1:39 PM, Unidata IDV Support wrote: > > >> Full Name: brian mapes > >> Email Address: address@hidden > >> Organization: u of miami > >> Package Version: 4.1 build date:2013-08-02 18:38 UTC > >> Operating System: Windows 7 > >> Hardware: Java: home: C:\Program Files\IDV_4.1\jre version: 1.6.0_43 > >> j3d:1.5.2 fcs (build4) > >> Description of problem: Why is the Tibetan Plateau twice as tall as the > >> ~5000m high Z500 contours here, > >> even as its color scale shows it should be about 5549 m at the top? > >> > >> How can I fix it? > >> > > > > Brian, > > The value range of the surface geopotential is from 51916 to 103116, > > and no idea what is its unit. The resolution of the dataset is very low, I > > think the GFS 0.5 degree dataset is much better if you just want some > > topography field. > > > > > > Yuan > > > >> Do I need to write .ncml to give units to MERRA's surface geopotential > >> field, and an official formula with metadata units handling, to change > >> that to meters? (tedious) Or make a new dataset offline and store that on > >> my RAMADDA? > >> > >> Or can I just fix it in IDV somehow, given that this will never change in > >> time? > >> > >> Thanks! > >> Brian > >> > >> > >> > > > > > > Ticket Details > > =================== > > Ticket ID: IIB-384472 > > Department: Support IDV > > Priority: Normal > > Status: Open > > > > Brian Mapes > address@hidden or address@hidden > > > > Ticket Details =================== Ticket ID: IIB-384472 Department: Support IDV Priority: Normal Status: Closed