Topic:
Visible calibration update for month of October 2008 and Gross filter limit update
Date/Time(UTC) Message Issued:
15 October 2008, 2100 UTC
Satellite(s) Involved:
NOAA-16, 17, 18, & MetOp-2/A
Instrument(s) Involved:
AVHRR, AMSU-A
Product(s) Involved/Affected:
All Products using AVHRR channels 1, 2, and 3a.
All Products using AMSU-A channel 14/no impact
Date/Time(UTC) of Initial Implementation:
14 October 2008, Time 1353 UTC
Details/Specifics of Change:
On October 14 around 1353 UTC, NOAA updated NOAA-16 AMSU-A Channel 14 Space View upper limit from 15400 to 17000 in an effort to avoid gross filtering of the data. At the same time, the AVHRR visible calibration coefficients update was performed for the month of October for NOAA-16/L, 17/M, 18/N and MetOp-A/2. The first orbits processed were:
NSS.HRPT.NL.D08288.S1401.E1413.B4156363.GC
NSS.GHRR.NL.D08288.S1225.E1400.B4156263.GC
NSS.HRPT.NM.D08288.S1333.E1343.B3277979.GC
NSS.GHRR.NM.D08288.S1226.E1418.B3277980.WI
NSS.LHRR.NM.D08288.S1236.E1248.B3277979.WI
NSS.LHRR.NN.D08288.S1209.E1215.B1752929.GC
NSS.HRPT.NN.D08288.S1438.E1451.B1753131.GC
NSS.GHRR.NN.D08288.S1250.E1437.B1753031.GC
For M2, the first orbit processed was the one running after orbit:
NCS.FRAC.M2.D08288.S1123.E1304.B1031112.SV
******************** Original Message *************************
The following update of the calibration coefficients for MetOp-2/A, NOAA-18, 17, &16 are recommended for October 14. These coefficients are intended to be optimal on October 28, in the middle of the two scheduled updates.
*****************************************************************
Metop-A/2
Ch_1_lo = 0.05303*count - 2.144, count<501.00
Ch_1_hi = 0.1567*count - 54.08, count>501.00
Ch_2_lo = 0.06292*count - 2.501, count<500.00
Ch_2_hi = 0.1869*count - 64.53, count>500.00
Ch_3_lo = 0.03163*count - 1.300, count<502.00
Ch_3_hi = 0.2197*count - 95.69, count>502.00
*******************************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05343*count - 2.107, count<501.00
Ch_1_hi = 0.1593*count - 54.79, count>501.00
Ch_2_lo = 0.06130*count - 2.415, count<500.00
Ch_2_hi = 0.1839*count - 64.09, count>500.00
********************************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05615*count - 2.247, count<501.12
Ch_1_hi = 0.1649*count - 56.72, count>501.12
Ch_2_lo = 0.06752*count - 2.651, count<500.73
Ch_2_hi = 0.2010*count - 69.59, count>500.73
Ch_3_lo = 0.03278*count - 1.382, count<501.37
Ch_3_hi = 0.2298*count - 100.31, count>501.37
*********************************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05662*count - 2.183, count<498.96
Ch_1_hi = 0.1653*count - 56.17, count>498.96
Ch_2_lo = 0.06176*count - 2.333, count<500.16
Ch_2_hi = 0.1820*count - 62.45, 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 AVHRR instrument scientist
Tsan Mo Tsan.Mo@noaa.gov 301-763-8136 x 137 AMSU-A 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