Topic:
Visible calibration update for month of April 2009
Date/Time(UTC) Message Issued:
14 April 2009, 2100 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:
14 April 2009, Time 1421 UTC
Details/Specifics of Change:
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