Subject: NOAA-16, AVHRR, Coefficient Updates, Implementation Date 10 June 2004- Issued: Date issued 10 June 2004; time issued 15:30 UTC
Calibration coefficient updates for June 2004
Date/Time(UTC) Message Issued:
10 June 2004 15:30 UTC
Products using channels 1 and 2 for NOAA-16
Date/Time(UTC) of Initial Implementation:
10 June 2004 14:00 UTC
Details/Specifics of Change:
The following update of the calibration coefficients are Implemented for:
Ch_1_lo = .05341*count - 2.059, count<498.96
Ch_1_hi = 0.1559*count - 52.98, count>498.96
Ch_2_lo = .05799*count - 2.191, count<500.16
Ch_2_hi = 0.1709*count - 58.64, count>500.16
The first orbits to be processed for NOAA-16 are:
on June 10,2004. These coefficients are intended to be optimal on June 25,
in the middle of the two scheduled updates.
For NOAA-16 AVHRR, this is a regular update with incremental changes in
calibration coefficients. Recent NOAA-16 AVHRR data show increasing
irregularity, particularly for Channel 2. We are closely monitoring the
instrument performance and its impact on vicarious calibration.
We have corrected the values for the NOAA-16 implementation, and anticipate
normal operations as has been in the past.
We plan to update these coefficients monthly and we do not anticipate
significant changes in future regular update.
Contact Person(s) Name/Email/Phone Number for Questions:
301-457-5247 ext 129
301-457-5247 ext 117
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