[nws-changes] 20090105: GOES-12

*UPDATE #12 1/5/2009 @ 1230 UTC*

GOES-12 has undergone a successful anti-ice decontamination of the imager, and 
is slated to return to imaging and sounding on Monday, January 5, 2009 at 1500 
UTC. At this time, GOES-12 will be placed on an Image and Navigation Recovery 
(INR) schedule (19 minute Full Disk scans at XX:15 and XX:45, CONUS Soundings 
at XX:46). The length of the INR recovery schedule will depend on the 
successful INR recovery of GOES-12. GOES-13 will be maintained as GOES-East 
through the GOES-12 INR recovery period.

For users pointing directly to GOES-12 and obtaining GOES-13 GVAR: At 1500 UTC 
on 1/5/09, GOES-12 GVAR will commence directly from GOES-12, but image 
navigation and registration may be out of desired specifications for a period 
of time. Users may want to consider adjusting their antennae to obtain GVAR 
directly from GOES-13.

** ESPC will continue to produce operational GOES-East product from GOES-13 
(Remapper, GINI/AWIPS, radiances, derived products, interpretive products) 
during the GOES-12 INR recovery. ESPC will monitor GOES-12 data, and if INR 
recovery is successful, switch GOES-East operations back to GOES-12 on or about 
Tuesday, January 6 at 1500 UTC. **

GOES-12 will be maintained at Midnight Black Body Calibration Correction (MBCC) Mode 1 (instant averaging) until Thursday, January 8th when SOCC will switch calibration mode back to MBCC Mode 3 (4 day averaging). SOCC reports a 10-20 percent signal gain on GOES-12 following the successful decontamination.
Background Notes:

GOES-13 is located at 105 degrees West and has WMO Satellite ID #257

GOES-12 is located at 75 degrees West and has WMO Satellite ID #256


Resources at the following web sites may help in determining your
specific elevation and angle for your receiving dish:

http://www.satcomresources.com/Look-Angle-Calculator

http://www.satsig.net/ssazelm.htm

Satellite imagery is being produced for AWIPS and SATEPSDIST users from
GOES-13.

GOES derived products (winds, soundings) from NESDIS are being produced
from GOES-13.

For ground ingest software, you may need to contact your ingest
hardware/software provider for any relevant updates to your system in
order to ingest GOES-13 data.

To account for some noted striping in imager and sounder data from
GOES-13, the SOCC implemented SPS Calibration Bias Mode (from 2 instead
of 1) and MBCC (Midnight Blackbody Calibration Correction) at 1900 UTC
on Wednesday December 17.

GVAR and Calibration information for GOES satellites can be found at:

http://www.osd.noaa.gov/gvar/gvardownload.htm

http://www.oso.noaa.gov/goes/goes-calibration/index.htm


Coverage and corner points of sector scans for GOES-13 are now found at:

http://www.ssd.noaa.gov/PS/SATS/GOES/EAST/g13sectors.html


Prior messages on this event can be found at: 
http://www.ssd.noaa.gov/PS/SATS/bulletins.html

An update will be provided as details of the recovery are made available, or
sooner if conditions warrant.


Data Affected by the Outage:

All products from GOES-12

Date and Time of the Outage:

12/14/08, 2218 UTC , 5:18 pm EST
Length of the Outage:

Unknown
Contact Point for Questions:

ESPC Operations OCL
ESPCOperations@xxxxxxxx
(301) 817-3880*


UPDATE #11 12/29/2008 @ 1930 UTC

*OSO/SOCC will perform a decontamination of the GOES-12 imager starting
on January 2, 2009 at approx. 17:00 UTC for a period of 48 hours. If
decontamination is successful, GOES-12 will resume imaging and sounding
schedules on January 5.
GOES-12 images will be calibrated with Mode 1 for the first-order gains
PLUS with the MBCC inactivated till January 12, 2009. During this
period, the impact on the users products, if there is any, will be
mainly confined in the 6-hour time window centered at 05:00Z (the
GOES-12 midnight time).

Details are yet to be finalized, but there will likely be a day of INR
(Image Navigation and Registration) recovery on January 5 where data
from GOES-12 may be poorly navigated, and users may desire to repoint
their antenna to GOES-13 during that time period.  Products from ESPC
(including for AWIPS production) may stay on GOES-13 for that time
period until imagery from GOES-12 is deemed stable for product
generation. In addition, products will be closely monitored following
the aforementioned decontamination of the GOES-12 imager.

ESPC Operations will be running in the current configuration until
further notice. GOES-13 GVAR data will continue to be sent out to users
via both GOES-12 and GOES-13. Broadcast services of LRIT, EMWIN, and DCS
are being routed through GOES-12. GOES-East direct broadcast users may
want to adjust their antennas to obtain data directly from GOES-13.


Notes:

GOES-13 is located at 105 degrees West and has WMO Satellite ID #257

GOES-12 is located at 75 degrees West and has WMO Satellite ID #256

Resources at the following web sites may help in determining your
specific elevation and angle for your receiving dish:

http://www.satcomresources.com/Look-Angle-Calculator

http://www.satsig.net/ssazelm.htm

Satellite imagery is being produced for AWIPS and SATEPSDIST users from
GOES-13.

GOES derived products (winds, soundings) from NESDIS are being produced
from GOES-13.

For ground ingest software, you may need to contact your ingest
hardware/software provider for any relevant updates to your system in
order to ingest GOES-13 data.

To account for some noted striping in imager and sounder data from
GOES-13, the SOCC implemented SPS Calibration Bias Mode (from 2 instead
of 1) and MBCC (Midnight Blackbody Calibration Correction) at 1900 UTC
on Wednesday December 17.

GVAR and Calibration information for GOES satellites can be found at:

http://www.osd.noaa.gov/gvar/gvardownload.htm

http://www.oso.noaa.gov/goes/goes-calibration/index.htm

Coverage and corner points of sector scans for GOES-13 are now found at:

http://www.ssd.noaa.gov/PS/SATS/GOES/EAST/g13sectors.html

Prior messages on this event can be found at:

http://www.ssd.noaa.gov/PS/SATS/bulletins.html

Updates will be provided as details of the recovery are made available,
or sooner if conditions warrant.


*Data Affected by the Outage:
*
All products from GOES-12

*Date and Time of the Outage:
*
2218 UTC , 5:18 pm  EST

*Length of the Outage:

*Unknown* *

*Contact Point for Questions:

ESPC Operations  OCL  (Operation Crew Leader)*