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[McIDAS #FZX-384851]: LDM Satellite IMagery



Hi Paul,

re:
> What is the difference between the GMC24K?? and the GNC24K??

The GNC24K images cover most of North America; they are denoted by
the string 'NHEM-COMP' in their LDM/IDD Product ID.  The GMC24K images
cover the entire northern hemisphere; they are denoted by the string
'NHEM-MULTICOMP' in their LDM/IDD Product IDs.  The 'MC' stands for
multi-satellite composite; the 'NC' stands for northern hemisphere composite.

re:
> I understand
> that the M comes in once every three hours but are there differences
> beyond that?

Yes.

re:
> Is the domain different?

Yes, very much so.  Run the following in a McIDAS session that has
frame sizes at least 700x900:

SF 1
IMGDISP GINICOMP/GNC24KIR LINELE=256 512 PLACE=C MAG=1 REFRESH='EG;MAP 
FILE=OUTVHRES'
SF 2
IMGDISP GINICOMP/GMC24KIR LINELE=512 512 PLACE=C MAG=-2 REFRESH='EG;MAP 
FILE=OUTVHRES'
LB 1 2
TERM L ON

This animation will demonstrate how different the images are.

re:
> This is the pqact line
> NIMAGE  ^satz/ch1/.*WV.*NHEM.*
> exec    /home/mcidas/paulsbatches/createregional.pl hemi wv
> 
> This creates a hemispheric image.

If you only want the multi-satellite composites, change your pqact.conf
action's pattern to:

NIMAGE  ^satz/ch1/.*WV.*NHEM-MULTICOMP.*

If you want the northern hemisphere composites (which, by the way come
in every 15 minutes), change the pattern to:

NIMAGE  ^satz/ch1/.*WV.*NHEM-COMP.*
By the way, the trailing '.*' is not needed in the pattern.

re:
> But it is being run too often and so i
> repeat the image. (using IMGDISP GINICOMP/GMC24K??)
> 
> Is there a way to get only the GMC?

See above.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: FZX-384851
Department: Support McIDAS
Priority: Normal
Status: Closed


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