Subject: NOAA-16, AVHRR, Instrument Resynch, Implementation Date: 21 April 2004- Issued: Date issued 21 April 2004 time issued 2010 UTC
AVHRR Resynch to remove barcodes
Date/Time(UTC) Message Issued:
21 April 2004 20:10 UTC
ALL/ Scan line dropout
Date/Time(UTC) of Initial Implementation:
21 April 2004, 23:36 UTC
Details/Specifics of Change:
You must forgive the redunancy of this message, in a rush to give ample
notice mistakes are made easily...the satellite involved is "NOAA-16".
The previous email did not mention that the MIRP rephase would affect all
instruments. Users should see scan line drop outs when the rephase occurs.
Any user feedback on the improvement (or lack of) in AVHRR imagery following
the rephase would be greatly appreciated.
Thank you for your support.
SOCC has reported re-occurance of the barcode pattern in the AVHRR imagery
for NOAA-16. Once again a MIRP rephase will be required.. the rephase will
occur at the implementation time indicated above in this message..
Users will see scan line drop outs when the rephase occurs. Checking "bit
1: resync occurred on this frame" in the data record quality indicators will
tell you when the rephase occurs. "bit 29: data gap precedes this scan"
indicates the gap created by the rephase in the scanline after it occurs.
Contact Person(s) Name/Email/Phone Number for Questions:
30-457-5247 ext 117
301-457-5247 ext 129
Web site(s) that contain other relevant information (where applicable):
http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B
http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices
http://www.oso.noaa.gov/poesstatus/ - SOCC polar satellites status
http://www.oso.noaa.gov/daily-news/index.htm - SOCC morning reports