Ah, I see, thanks. Using your GDCROSS input I am seeing elevation between CWPL (391 m) and CYMO (9 m) - see attached. This being a cross-section across Ontario, there's not much elevation to show. The filled contours are shown below the surface because of the cross-section interpolation. If I expand CXSTNS out to LAX>BWI, there are grid points below the surface level which are not interpolated to, though there is some overlap (second attachment). Are you using a different CXSTNS definition which does not show the surface? -Michael > Michael- > I am simply using a nam212 gempak file within gdcross to plot potential > vorticity and theta. Parameter list is (note gvcord) > > CXSTNS = CWPL>CYMO > GDATTIM = f00 > GVCORD = pres > GFUNC = pvor(thta,wnd) > GVECT = > GDFILE = /squall1/gempak-data/model/nam/2012111212_nam212.gem > WIND = > REFVEC = 10 > PTYPE = log > YAXIS = > IJSKIP = 0 > CINT = > SCALE = 6 > LINE = 32/1/3 > BORDER = 1 > TITLE = 1/1 > CLEAR = yes > DEVICE = gif|ago.gif|1200;900 > TEXT = 1 > PANEL = 0 > CONTUR = 3 > FINT = 1 > FLINE = 13-30 > CTYPE = f > > Any other thoughts? > > > -- > Darren R. Clabo > South Dakota State Fire Meteorologist > O: (605) 394-1996 M: (605) 381-9253 > address@hidden > http://www.ias.sdsmt.edu/clabo/index.htm > > -----Original Message----- > From: Unidata GEMPAK Support [mailto:address@hidden] > Sent: Tuesday, November 20, 2012 8:37 AM > To: Clabo, Darren R. > Cc: address@hidden > Subject: [GEMPAK #CYW-235722]: gdcross question > > I can confirm that the GDCROSS code is written to only draw surface elevation > when GVCORD is PRES. I'm trying to make it work for HGHT and THTA but so far > it's not an easy task. Not the news you wanted to hear, sorry. > > Michael > > > Hi Darren, > > > > Without seeing the GDCROSS input I'm making a guess about how you went > > about this. Did you run GDVINT to interpolate to theta levels and then run > > this new grid file through GDCROSS? > > > > I see what you describe when I plot a linear cross-section of temperatures > > by the HGHT coordinate, though there are only 6 HGHT levels for TMPK in the > > GFS, so the scope is limited, but it does not show a surface elevation > > cross-section at the bottom, like you say. > > > > I'm guessing that surface elevation is only designed to show for > > GVCORD=PRES. I'm looking at the source code and will see if I can get it > > to work with height. > > > > -Michael > > > > > > > > > Good day- > > > I am working on putting together an isentropic analysis in GDCROSS. > > > However, when I am plotting a cross section from across the CONUS, all of > > > the stations are showing data down to 1000 mb. Considering the elevation > > > of the Intermountain West, I was hoping I could get a plot that resembles > > > what is found on the GEMPAK tutorial page > > > (http://www.unidata.ucar.edu/software/gempak/tutorial/vertical_plotting.html#12.2) > > > where the surface elevation is easily seen. > > > > > > Any thoughts on what I can do? > > > > > > -- > > > Darren R. Clabo > > > South Dakota State Fire Meteorologist > > > O: (605) 394-1996 M: (605) 381-9253 address@hidden > > > http://www.ias.sdsmt.edu/clabo/index.htm > > > > > > > > > > > > > > Ticket Details > =================== > Ticket ID: CYW-235722 > Department: Support GEMPAK > Priority: Normal > Status: Open > > Ticket Details =================== Ticket ID: CYW-235722 Department: Support GEMPAK Priority: Normal Status: Open
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