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Re: Fwd: interpretation

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  • Subject: Re: Fwd: interpretation
  • Date: 09 Jun 2006 10:39:29 -0600
Steve,

The colorbar scale is brightness values (eg the BRIT label). Those are
the data values in the image (eg, the imager senses radiative brightness
at ~6.7 microns). No calibration is provided in the image, so the color
bar is just the range of data. It is not hardcoded other than the fact
that the $GEMTBL/sat/imgtyp.tbl provides a range of 0 to 255 for this
8 bit image product.

Steve Chiswell
Unidata User Support 
  

 


On Thu, 2006-06-08 at 17:38, Steven Businger wrote:
> Steve,
> 
> I would appreciate your thoughts on a problem we are having with  
> incorrect labeling of the color coded scales in GEMPAK.  I seems that  
> the color bar attributes are hardcoded within gempak and are not  
> configurable within the program calls.  Examples of the problem can  
> be found on our satellite page (link below) and clicking on e.g., the  
> WV images.
> 
> http://weather.hawaii.edu/satellite/index.cgi? 
> satgroup=main&thumbs=on&banner=uhmet&overlay=off
> 
> Thanks, Steven
> 
> Begin forwarded message:
> 
> > From: Ryan Lyman <address@hidden>
> > Date: June 8, 2006 11:29:43 AM HST
> > To: Steven Businger <address@hidden>
> > Subject: Re: interpretation
> >
> >
> >
> > Steven,
> >
> > it appears that the color bar attributes are hardcoded within  
> > gempak and are not configurable within the program calls.  each  
> > satellite file 'calibration type' within its header is dependent on  
> > its source, which can lead to different/inproper labeling.  a bit  
> > odd...i know.
> >
> > ryan
> >
> >
> >
> > Steven Businger wrote:
> >
> >> Ryan,
> >> I have had several inquiries lately regarding the scale on the WV   
> >> imagery, which I expect is due to the fact that it is mislabled.   
> >> A  scan of the MKWC satellite page shows that a number of the IR  
> >> imagery  scales are similarly mis labeled.  Perhaps you can fix this?
> >> Thanks, Steven
> >> On Jun 6, 2006, at 12:52 PM, Department of Meteorology wrote:
> >>>
> >>> From: dickjanine <address@hidden>
> >>> Date: June 6, 2006 10:45:39 AM HST
> >>> To: address@hidden
> >>> Subject: interpretation
> >>>
> >>>
> >>> http://weather.hawaii.edu/satellite/satanim.cgi?  
> >>> chnl=uw8&domain=hus&banner=uhmet&satplat=goes10
> >>>
> >>>
> >>> please inform me as to the meaning of the colors in the above   
> >>> link.  mahalo
> >>>
> >>> dick cohen
> >>>
> >>>
> >
> > -- 
> >
> > -------------------------------------------------------
> >  Ryan Lyman                   Mauna Kea Weather Center
> >  Institute for Astronomy      Forecast Meteorologist
> >  640 North A'ohoku Place      Tel: (808) 932-2323
> >  Hilo, Hawaii 96720-2700      Fax: (808) 933-0737
> >
> >              http://mkwc.ifa.hawaii.edu/
> > -------------------------------------------------------
> >