NOTE: The nws-changes mailing list is no longer active. The list archives are made available for historical reasons.
Topic: GOES-12 and GOES-9 Imager/Sounder Patch Temperature Change
Message Issued: September 6, 2005, 1935 UTC
Satellites Impacted: GOES-12 and GOES-9
Products Impacted: GOES-12 Imager and Sounder and GOES-9 Imager Products
Date/Time of Initial Impact: GOES-12 Imager: September 7, 2005 0415 UTC
GOES-12 Sounder: September 6, 2005 0346 UTC
GOES-9 Imager: September 6, 2005 1235 UTC
-----------------------------------------
Details:
The following was received from OSO/SOCC concerning the GOES-12 Imager and Sounder
and the GOES-9 Imager:
On September 7, 2005 (DOY 250), at approximately 4:15 z (12:15 ET), SOCC Engineers will change the GOES-12 Imager patch temperature from its MID set point (98.9 K) to its LOW setpoint (90.9 K).
In order to minimize the impact to users, the patch temperature control will be commanded to a LOW set-point while the instrument is at rest and about to enter into its eclipse period. The temperature transition will take approximately 4 hours to complete. Images taken during 6:30z-8:19z will show mild to moderate "Venetian Blinding" due to the decreasing patch temperature.
The Imager patch temperature control will remain at a LOW (90.9 K) set-point until it is switched back to a MID (98.9 K) set-point early in May during the 2006 Spring eclipse/KOZ season. MBCC will be turned on in 2 days, DOY 252, 9/9/05, at approximately 18:34z during the GOES-12 housekeeping period.
-----On September 6, 2005 (DOY 250), at approximately 3:46:10z (11:46:10 ET), SOCC Engineers will change the GOES-12 Sounder patch temperature from its MID set point (98.3 K) to its LOW setpoint (88.5 K).
In order to minimize the impact to users, the patch temperature control will be commanded to a LOW set-point while the instrument is at rest and about to enter into its eclipse period. The temperature transition will take approximately 4 hours to complete. Images taken during 6:45z-7:56z will show mild to moderate "Venetian Blinding" due to the decreasing patch temperature. The Sounder patch temperature control will remain at a LOW (88.5 K) set-point until it is switched back to a MID (98.3 K) set-point early in May during the 2006 Spring eclipse/KOZ season.
-----Earlier this morning, DOY 249, 9/6/05, at approximately 12:35z (08:35 ET)SOCC Engineers changed the GOES-9 Imager patch temperature control set-point from MID(101.0 K) to LOW (94.0 K) and MBCC was turned-off.
In order to minimize the impacts to users, the patch temperature control was commanded to a LOW set-point while the instrument was at rest and about to enter into its eclipse period. The temperature transition took approximately 4 hours. Images taken during 15:01z-16:25z will show mild to moderate "Venetian Blinding" due to the decreasing patch temperature.
The Imager patch temperature control will remain at a LOW (94.0 K) set-point until it is switched back to a MID (101.0 K) set-point early in May during the 2006 Spring eclipse/KOZ season. MBCC will be turned on in 2 days, DOY 251, 9/8/05, at approximately 19:11z during the GOES-9 housekeeping period.
------------------------------------------ Contact Information: Brian Hughes Satellite Services Division NOAA/NESDIS/OSDPD 301-763-8051 x106 brian.hughes@xxxxxxxxSee http://www.ssd.noaa.gov/PS/SATS/messages.html for this and other satellite related messages.
See http://www.ssd.noaa.gov for full GOES scanning schedules.
nws-changes archives: