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[GEMPAK #WYG-962225]: Gempak GOES Satellite Projection Question

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  • Subject: [GEMPAK #WYG-962225]: Gempak GOES Satellite Projection Question
  • Date: Fri, 07 Aug 2009 10:04:13 -0600
Hi Kevin,

Though it appears to be an orthographic projection, it's actually the GOES 
satellite projection which uses the McIDAS navigation modules... there is a 
calculation between a line/element in the image to a point on the earth which 
the McIDAS modules perform, and each satellite has it's own set of 
calculations,, which are located in $GEMPAK/source/gemlib/im/imar2gm.f

-Michael



> Has there been any update on this?
> Thanks
> Kevin
> 
> On Jul 13, 2009, at 7:26 PM, Unidata GEMPAK Support wrote:
> 
> > Trying to find out myself today, but might not be able to get back
> > to you until Friday, I'll be out of town Tues-Thurs.
> >
> > GEMPAK is displaying the GINI images in their raw format from the
> > IDD, so far I haven't found documentation online specifying the
> > exact projection angles for these products.
> >
> > -Michael
> >
> >
> >> Yes!
> >> What are the angles?
> >> Thanks Michael
> >> Kevin
> >>
> >> Email Source: Kevin's All-Weather, All-Terrain, Two-Finger Drive,
> >> Handheld Office built by Apple.
> >>
> >> On Jul 13, 2009, at 6:24 PM, "Unidata GEMPAK Support" <support-
> >> address@hidden
> >>> wrote:
> >>
> >>> Hi Kevin,
> >>>
> >>> Steve moved on from Unidata early last year!
> >>>
> >>> To answer your question I believe this image is an orthographic
> >>> projection.  Are you looking for the exact projection angles?
> >>>
> >>> -Michael
> >>>
> >>>
> >>>> Hello Steve!
> >>>>
> >>>> I have a question about Satellite projections.
> >>>>
> >>>> In GEMPAK, when you use the SAT projection, you get the image
> >>>> plotted
> >>>> in the projection of the satellite image..
> >>>>
> >>>> like so...
> >>>>
> >>>> http://hoot.metr.ou.edu/satellite/GOES-E/full/IR
> >>>>
> >>>> My question is...in this particular instance, what map
> >>>> projection is
> >>>> used for these GOES-E images?
> >>>>
> >>>> It's not Mercator, and its not Polar Stereographic or Flat Earth...
> >>>>
> >>>> but, it doesnt look like Lambert Conformal either...
> >>>>
> >>>> Help?
> >>>> Hope you are well!!
> >>>> THANKS
> >>>> Kevin
> >>>>
> >>>> Dr. Kevin A. Kloesel
> >>>> Associate Dean, OU College of Atmospheric and Geographic Sciences
> >>>> 120 David L. Boren Blvd.
> >>>> National Weather Center, Suite 1100
> >>>> Norman, Oklahoma 73072
> >>>> Voice 405-325-3298
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>> Ticket Details
> >>> ===================
> >>> Ticket ID: WYG-962225
> >>> Department: Support GEMPAK
> >>> Priority: Normal
> >>> Status: Open
> >>>
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: WYG-962225
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Open
> >
> 
> 


Ticket Details
===================
Ticket ID: WYG-962225
Department: Support GEMPAK
Priority: Normal
Status: Open