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RE: Network outage (fwd)

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  • Subject: RE: Network outage (fwd)
  • Date: Mon, 4 Jan 1999 10:22:54 -0700 (MST)

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================

---------- Forwarded message ----------
Date: Mon, 28 Dec 1998 12:15:05 -0500
From: Dan Vietor <address@hidden>
To: Gilbert Sebenste <address@hidden>
Subject: RE: Network outage

> Gilbert, wondering if NOAAPORT Channels 2 & 3 are in our
> future (I hope so!)

Most of the NOAAPORT satellite images are relatively small in size
(1.6MB) and could be sent over IDD. The problem child is the 1km visible
which cannot be sent over IDD.  What I've done here is to resample the
image back to 4 km (1.6MB) and use this image.   I have a program to do
the resample.  The potential of 4 images an hour at 4km is better than
nothing at all.

I would send to all sites:
  WMO   Chan Type  Res Size #/hr
TIGN01   2/3  Vis   8  1.5M   2  National composite (East+West covers
US+HI+AK)
TIGN02   2/3  IR11  8  1.5M   2  National composite
TIGN05   2/3  WV    8  1.5M   2  National composite
TIGF01   2/3  Vis  24  514K   2  North Hemisphere composite (East+West)
TIGF02   2/3  IR11 24  514K   2  North Hemisphere composite
TIGF05   2/3  WV   24  514K   2  North Hemisphere composite
  Total: 14MB/hr

I would send to eastern sites:
TIGE01*   2   Vis   4  1.6M   4  CONUS East Vis resampled to 4 km
TIGE02    2   IR11  4  1.6M   4  CONUS East IR 11 micron
  Total: 12.8MB/hr

I would send to western sites:
TIGW01*   3   VIS   4  1.2M   4  CONUS West Vis resampled to 4km
TIGW02    3   IR11  4  1.2M   4  CONUS West IR 11 micron
  Total: 9.6MB/hr

You could resample the Vis images to 2km and get images around 6.5MB in
size.  This could be sent within reason to some sites.  Sending the 26MB
1km files, 4 per hour is beyond most sites capabilities.

You could also argue that the McIDAS area files already provide most of
this so why send other than to get the time resolution.

________________________________________________________
Daniel Vietor               Mail: address@hidden
Unisys Corp                 Title: Engineer/Meteorologist
221 Gale Lane               Phone: 610-444-2407
Kennett Square PA 19348     Fax: 610-444-2420