Topic:
Visible calibration update for month of April 2009 - correction
Date/Time(UTC) Message Issued:
16 April 2009, 1715 UTC
Satellite(s) Involved:
NOAA-16, 17, 18, & MetOp-2/A
Instrument(s) Involved:
AVHRR
Product(s) Involved/Affected:
All Products from channels 1, 2, and 3a.
Date/Time(UTC) of Initial Implementation:
15 April 2009, Time 1938 UTC
Details/Specifics of Change:
The visible calibration update made on 14 April (as indicated below) did not contain the April visible calibration values. The March update was accidentally redone for April. The correct parameters were placed into operations on 15 April at 1938 UTC. This update was effective with the following passes:
NSS.GHRR.NL.D09105.S1448.E1635.B4414748.GC
NSS.HRPT.NL.D09105.S1844.E1858.B4414949.CF
NSS.HRPT.NM.D09105.S2004.E2017.B3538888.GC
NSS.GHRR.NM.D09105.S1817.E2003.B3538788.GC
NSS.HRPT.NN.D09105.S2055.E2110.B2011616.MO
NSS.GHRR.NN.D09105.S1907.E2102.B2011416.GC
NSS.LHRR.NN.D09105.S1909.E1915.B2011515.GC
For M2, the first orbit processed will be the one running
after orbit:
NCS.FRAC.M2.D09105.S1638.E1818.B1291415.SV
***************** Original update - repeat of March update *****************
The updated visible calibration coefficients were made operational at 1421Z on April 14. The 1st 1b files produced using the updated were:
NSS.FRAC.M2.D09104.S1339.E1519.B1289899.SV
NSS.HRPT.NN.D09104.S1438.E1451.B2009898.GC
NSS.GHRR.NN.D09104.S1250.E1436.B2009798.GC
NSS.LHRR.NN.D09104.S1533.E1542.B2009898.GC
NSS.HRPT.NM.D09104.S1531.E1545.B3537171.WI
NSS.GHRR.NM.D09104.S1345.E1531.B3537071.WI
NSS.HRPT.NL.D09104.S1507.E1516.B4413333.GC
NSS.GHRR.NL.D09104.S1332.E1506.B4413233.GC
***************** Original Message ************************
The following update of the calibration coefficients are recommended for Metop-A/2, NOAA-18/17/16 on April 14. These coefficients are intended to be optimal on April 28, in the middle of the two scheduled updates.
*******************************************************************
Metop-A/2
Ch_1_lo = 0.05327*count - 2.154, count<501.01
Ch_1_hi = 0.1574*count - 54.33, count>501.01
Ch_2_lo = 0.06343*count - 2.521, count<500.42
Ch_2_hi = 0.1884*count - 65.05, count>500.42
Ch_3_lo = 0.03197*count - 1.314, count<501.94
Ch_3_hi = 0.2220*count - 96.71, count>501.94
**************************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05357*count - 2.112, count<501.54
Ch_1_hi = 0.1597*count - 54.93, count>501.54
Ch_2_lo = 0.06128*count - 2.414, count<500.40
Ch_2_hi = 0.1839*count - 64.06, count>500.40
**********************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05629*count - 2.253, count<501.12
Ch_1_hi = 0.1653*count - 56.85, count>501.12
Ch_2_lo = 0.06777*count - 2.661, count<500.73
Ch_2_hi = 0.2017*count - 69.84, count>500.73
Ch_3_lo = 0.03298*count - 1.390, count<501.37
Ch_3_hi = 0.2312*count - 100.93, count>501.37
*********************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05700*count - 2.198, count<498.96
Ch_1_hi = 0.1664*count - 56.54, count>498.96
Ch_2_lo = 0.06232*count - 2.354, count<500.16
Ch_2_hi = 0.1836*count - 63.02, count>500.16
Contact Person(s) Name/Email/Phone Number for Questions:
Emily Harrod Emily.Harrod@noaa.gov 301-817-3882 operations support
Xiangqian Wu Xiangqian.Wu@noaa.gov 301-763-8136 x 138 instrument scientist
Web site(s) that contain other relevant information (where applicable):
http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B notices
http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices
http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status