Alan, I've attached a northen hemispheric product. At this resolution, getting the great lakes filled correctly makes the other cost lines fairly blocky. The Caspian sea is the other most notable problem since a sizeable land area is below sea level it needs to be masked as well It might work for some of your needs. If you have a North American need, it would probably be best to generate a particular image for that as well to work with the topographic limitations as mentioned above. Steve On Mon, 2007-06-11 at 18:09 +0000, address@hidden wrote: > Steve, > > That works very nicely!! Thanks. > > Just out of curiosity, how big of a file would it be if we were to get > the same resolution for the entire Northern Hemisphere? I'm not sure how > well it would work, but it would improve the appearance of all of our > Medium Range products, which use a much larger area. > > Thanks again. > > Alan > > ----- Original Message ----- > From: Steve Chiswell <address@hidden> > Date: Monday, June 11, 2007 4:00 pm > Subject: Re: Higher resolution topographic gempak sat files > > > Alan, > > > > I created a GINI with the identical garea you currently use for > > PROJ=STR/90;-105;0, > > Hopefully it matches the same sensor ID as the last one I sent you (we > > went around > > a couple of iterations to get the imgtyp.tbl correct). I've added a > > land use mask so > > that the great lakes and salton sea are better represented by > > land/watercolors. > > > > I've attached both the gini as well as a gif for you to look at.. > > > > Steve Chiswell > > Unidata User Support > > > > > > On Thu, 2007-06-07 at 08:21 -0400, Alan Robson wrote: > > > Hi Steve, > > > > > > Sorry to bother you again about this but I was hoping I could > > trouble > > > you one more time to make a small change to the *.gini file. > > > > > > I am starting to convert some of our scripts to use the newer, > > high > > > resolution 5 min topo image but it turns out that the image does > > not > > > extend far enough into the Pacific Ocean from the west coast of > > North > > > America. > > > > > > Here is a sample of our "NOAA product" : > > > http://www.hpc.ncep.noaa.gov/noaa/noaa.gif > > > > > > It has a GAREA=19.9;-123;44.0;-56.3 > > > > > > I have attached another gif that is basically created using the > > exact > > > same settings as the current operational product but using the hi > > res 5 > > > min topo file instead. > > > > > > Thanks > > > > > > Alan Robson > > > > > > Steve Chiswell wrote: > > > > Alan, > > > > > > > > I'll be out of the office next week for the AMS, but would be > > happy to > > > > work with you > > > > more after I return. > > > > > > > > It would be possible for me to provide you with the topo to > > grid to > > > > image programs, > > > > but you would have to run my binaries to do that until your > > version of > > > > GEMPAK is capable of handling larger grids (since I use the grid > > > > navigation routines to handle the > > > > transformation from lat/lon projection to other projections). > > So, for a > > > > quick start, > > > > I provided a sample using the 5min dem data since it included > > bathymetry> > as the image you are currently using does. > > > > > > > > I created a ~6km resolution GIF as a sample from the 5min dem > > data at: > > > > http://www.unidata.ucar.edu/staff/chiz/gifs/topo_nam.gif > > > > > > > > You can download the gini file that created the image at: > > > > http://www.unidata.ucar.edu/staff/chiz/gifs/ustopo_dem5.gini > > > > > > > > For GINI, I used the GOES7 satellite ID here since you probably > > cannot> > remap an unused ID with your version of GEMPAK. The > > > > $GEMTBL/sat/imgtyp.tbl entry to display this image is: > > > > TOPO TOPO_DEM5 0 95 33 32768 1 > > > > upc_dem5.tbl > > > > > > > > You can download the color table for your $GEMTBL/luts > > directory here: > > > > http://www.unidata.ucar.edu/staff/chiz/gifs/upc_dem5.tbl > > > > > > > > The GPMAP parameters to display the image as the GIF above is > > shown> > below, where I've added: > > > > BND = lakes/24 > > > > to fill in the lakes as water color (since the DEM data would > > be above > > > > sea level and not blue there). You can set the GAREA smaller > > than dset > > > > as necessary. > > > > > > > > GAREA = dset > > > > PROJ = sat > > > > SATFIL = ustopo_dem5.gini > > > > BND = lakes/24 > > > > LUTFIL = default > > > > > > > > The 30 second data is great for smaller areas where you can take > > > > advantage of the resolution, more therelater if you feed this > > is where > > > > you want to go. > > > > > > > > Steve Chiswell > > > > Unidata User Support > > > > > > > > On Tue, 2007-01-09 at 14:07 -0500, address@hidden wrote: > > > > > > > >> Steve, > > > >> > > > >> It's hard to say just what kind of resolution that we need as > > I am not > > > >> sure what we are currently using. I think that maybe the one > > we use is 5 > > > >> min. We have had it for at least 5 years. > > > >> > > > >> I really do not want this to be a lot of work for you. Is > > there any way > > > >> that we could run the grid-to-image conversion on the data so > > we could > > > >> play around with various data sets to see what we like? (That > > assumes it > > > >> would run on our workstations, which run RHEL3 and RHEL4.) It > > would be > > > >> nice to have some background for general use that is better > > than what we > > > >> have now but also a much better background if we need to > > produce much > > > >> higher quality images for publication. > > > >> > > > >> Alan > > > >> > > > >> > > > >> ----- Original Message ----- > > > >> From: Steve Chiswell <address@hidden> > > > >> Date: Tuesday, January 9, 2007 12:43 pm > > > >> Subject: Re: Higher resolution topographic gempak sat files > > > >> > > > >> > > > >>> Alan, > > > >>> > > > >>> I have created both 30 second and 5 minute global topography > > (dem) > > > >>> datasets. > > > >>> The 5 minute dem data has bathymetry, while the 30 second > > data set > > > >>> doesnot. > > > >>> > > > >>> I provide these as a grid > > > >>> (http://www.unidata.ucar.edu/downloads/gempak/tables/) > > > >>> for use with a program I call GDTOPO which allows users to > > create a > > > >>> subset for a Gempak grid file. However, it would be possible > > to map > > > >>> thegrid into an image to use as a background using the same > > grid to > > > >>> imageconversion that I do for our > > > >>> radar composite images. > > > >>> > > > >>> If you can provide some information regarding the resolution > > > >>> (pixel-->km) you > > > >>> need, I can look into making some background images. > > > >>> > > > >>> Steve Chiswell > > > >>> Unidata User Support > > > >>> > > > >>> > > > >>> > > > >>> > > > >>> On Tue, 2007-01-09 at 10:50 -0500, Alan Robson wrote: > > > >>> > > > >>>> Hi Mr Chiswell, > > > >>>> > > > >>>> My name is Alan Robson and I work in the Development and > > Training > > > >>>> > > > >>> Branch > > > >>> > > > >>>> of the Hydrometeorological Precipitation Center in Camp > > Springs, > > > >>>> Maryland. I am not sure if you the right person to address > > this > > > >>>> request to and hope you will forward it to the appropriate > > > >>>> > > > >>> individual if > > > >>> > > > >>>> you are not. > > > >>>> > > > >>>> We produce many meteorological products for our webpage ( > > > >>>> http://www.hpc.ncep.noaa.gov/ ) that use a fairly low > > resolution > > > >>>> topographic gempak sat file as a background. This is a > > sample > > > >>>> > > > >>> of one > > > >>> > > > >>>> of our most popular products that gets very many webhits: > > > >>>> http://www.hpc.ncep.noaa.gov/noaa/noaa.gif > > > >>>> > > > >>>> We are currently attempting to improve the appearance of our > > > >>>> > > > >>> products > > > >>> > > > >>>> and need to find a higher resolution version of the > > topographic > > > >>>> > > > >>> gempak > > > >>> > > > >>>> satellite file to use as a background. > > > >>>> > > > >>>> Can you help us or give me the name of someone who can? > > > >>>> > > > >>>> Thanks > > > >>>> > > > >>>> Alan Robson > > > >>>> HPC/NCEP > > > >>>> Camp Springs, MD > > > >>>> > > > >>>> > > > >>> -- > > > >>> Steve Chiswell <address@hidden> > > > >>> Unidata > > > >>> > > > >>> > > -- > > Steve Chiswell <address@hidden> > > Unidata > > -- Steve Chiswell <address@hidden> Unidata
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