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Re: GOES Northern Hemisphere Change Problem, Issued 4/27/00 (fwd)

Hi Tom,

You have probably already seen this, but I thought I'd forward it anyway.

Linda

---------- Forwarded Message ----------
Date: Thursday, April 27, 2000 6:05 PM +0000
From: wxsat mailer <address@hidden>
To: address@hidden
Subject: Re: GOES Northern Hemisphere Change Problem, Issued 4/27/00

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Subject: Re: GOES Northern Hemisphere Change Problem, Issued 4/27/00
From: Dee Wade <address@hidden>
Date: Thu, 27 Apr 2000 16:34:32 -0500

Hello McIDAS Users,

We have received questions concerning the possible problems with McIDAS in
regards to the message below and the GOES sector changes.

Please be advised there will be no problems with your McIDAS-X software.

The SDI ingestors may need a modification to the file, NAMES.GVAR to file
the data under separate names (i.e., conus, nh, etc.). Even without a
modification
to the file, the SDI will ingest all data sent, and file it under the name ALL.

When we have determined if a updated NAMES.GVAR file is necessary we will
provide all our SDI sites with this new text file.

The "major reprogramming effort" that are referred to in the memo below
are site specific and will not be necessary for the general McIDAS community.

I hope this clears up any confusion that you may have.

Dee Wade
--
Dee Wade
McIDAS User Services and SSEC Data Center
Space Science and Engineering Center
University of Wisconsin-Madison           Email:     address@hidden
1225 West Dayton Street                   Voice:     (608) 263-0527
Madison, WI  53706                        Fax:       (608) 263-6738


address@hidden wrote:


The following message was transmitted on 4/21/00:

"Beginning May 02, 2000 (Julian day 123), the GOES-East and GOES-West
scanning
schedules will be modified.

The scan area of the Northern Hemisphere sector, used in the GOES-East
Routine,
Rapid Scan Operations (RSO), and Super Rapid Scan Operations (SRSO)
schedules, will be adjusted south. The Northern Hemisphere EXTENDED scan
sector, that occurs in the
GOES-East Routine schedule, will NOT be affected by this change.

The Northern Hemisphere scan sector, that occurs in the GOES-West
schedules, will be adjusted further north and truncated slightly on the
eastern edge.

The new graphic sector definitions will be posted to "www.ssd.noaa.gov/"
when they
are made available by NESDIS/SOCC."

---------

It was determined late on 4/26/00 that the impact of these changes on
ingest/display systems was far greater than previously believed.

As a result, we have been forced to delay the scheduled change to the
GOES-10 Northern Hemisphere sector for at least two weeks.  We will also be
unable to support requests for RSO or SRSO operations for those two weeks.
These actions are being taken to preclude the high probability of major
loss of data, particularly for the NOAAPORT/AWIPS users, with our current
ingest software.  A major reprogramming effort is underway here to support
the changes on our GINI and McIDAS ingest and processing systems.

A major reprogramming effort is also underway here to modify our GOES-8
GINI and McIDAS software ingest and processing systems.  The current
estimate of the level of effort for GOES-8 is that the modifications can be
performed in time for the Monday evening implementations of the new
scanning schedules by NESDIS/SOCC.  If this effort is unsuccessful, the
processing of RSO and SRSO GOES-8 data will be at risk until the
reprogramming effort is complete.  The Routine and Full Disk schedules are
minimally impacted by these changes.

-------------

The following information if provided for those who must make modifications
on their own ingest/processing software.

The line/pixel corner boundaries for the GOES-East and GOES-West North
Hemispheres being redefined are:

GOES-East:
     Start/End lines 3096/8080     Start/End Pixels  9052/22900

GOES-West:
     Start/End lines 2472/7888     Start/End Pixels  7890/21130

As stated above, the implementation for GOES-West (GOES-10) in the Routine
Schedule is being delayed at least two weeks.  Users will be notified when
the changes will be placed into effect for GOES-West.

These sector changes for GOES-East (GOES-8) will go into effect Monday
evening for the schedules in effect after
0000 UTC Tuesday.  The GOES-West North Hemisphere corner changes, had they
gone in by Monday, would have caused outages on the GOES-West AWIPS PACUS,
North Hemi, SUPERN, Alaska National & Regional, and Hawaii National
sectors, and Full Disk, North Hemisphere, and PACUS outages on the standard
(non-AWIPS) operations side.

We will attempt to complete the GOES-East ingestor and GOES-East GINI2
(remap) system code modifications required by the corresponding North
Hemisphere change through this weekend to meet the Monday deadline.  AWIPS
User's should be notified that GOES-East AWIPS CONUS, North Hemi, SUPERN,
and Puerto Rico National sectors could be negatively affected.  SSD's
(non-AWIPS/i.e. McIDAS) standard operational users should be notified that
CONUS and Northern Hemisphere raw and remap sectors could be negatively
impacted.

Steve Arnett
Satellite Analysis Branch
NOAA/NESDIS/SSD
address@hidden
(301) 763-8051 ext 109



[End of message from WXSAT-L]

---------- End Forwarded Message ----------



Linda Miller - address@hidden
External Liaison, Unidata
University Corporation for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307-3000
303 497-8646 fax: 303-497-8690
URL:  http://www.unidata.ucar.edu/staff/lmiller/un.act.html