Problem with NOAA-16 Level 1B/1B* and User Ephemeris File

Beginning on the evening of September 29 through the afternoon of
October 1, the earth locations created for the NOAA-16 level 1B/1B*
contained an error of approximately 15 kilometers along track. This was
caused by erroneous drag parameters used to predict the orbit vectors on
the evening of the 29th and 30th when creating the User Ephemeris File
(UEF). This error in the UEF affected the level 1B earth location as
indicated below; the TBUS bulletins sent out on September 30 and October
1; the Equator Crossing data showed a +2 second error, and the Search
and Rescue Ephemeris. The problem was corrected around 1850L on
October 1. Level 1B data will be reprocessed for archive purposes as
indicated. Other passes are no longer available on the CEMSCS for
reprocessing. If you have questions or concerns please contact Emily
Harrod.

First orbits processed with bad Earth location:
NSS.GHRR.NL.D01273.S0025.E0219.B0526970.WI (and AIP)
NSS.HRPT.NL.D01273.S0600.E0613.B0527272.WI
NSS.LHRR.NL.D01273.S0056.E0102.B0526969.WI

Last orbits processed with bad Earth location:
NSS.GHRR.NL.D01274.S1850.E2043.B0529395.GC (and AIP)
NSS.HRPT.NL.D01274.S2228.E2242.B0529696.GC
NSS.LHRR.NL.D01274.S2037.E2041.B0529595.GC

These passes will be reprocessed to replace the archive data: (and AIPs
for corresponding GHRR)
NSS.GHRR.NL.D01274.S1041.E1227.B0528990.GC.A
NSS.GHRR.NL.D01274.S1222.E1408.B0529091.GC.A
NSS.GHRR.NL.D01274.S1403.E1557.B0529192.WI.A
NSS.GHRR.NL.D01274.S1554.E1714.B0529293.WI.A
NSS.GHRR.NL.D01274.S1709.E1854.B0529294.WI.A
NSS.GHRR.NL.D01274.S1850.E2043.B0529395.GC.A

NSS.HRPT.NL.D01274.S1856.E1910.B0529494.WI.A
NSS.HRPT.NL.D01274.S2041.E2049.B0529595.MO.A
NSS.HRPT.NL.D01274.S2048.E2101.B0529595.GC.A
NSS.HRPT.NL.D01274.S2221.E2229.B0529696.MO.A
NSS.HRPT.NL.D01274.S2228.E2242.B0529696.GC.A

NSS.LHRR.NL.D01274.S1658.E1709.B0529292.WI.A
NSS.LHRR.NL.D01274.S1710.E1716.B0529393.WI.A
NSS.LHRR.NL.D01274.S1758.E1806.B0529393.WI.A
NSS.LHRR.NL.D01274.S1840.E1852.B0529393.WI.A
NSS.LHRR.NL.D01274.S2037.E2041.B0529595.GC.A
NSS.LHRR.NL.D01274.S2254.E2300.B0529696.GC.A
--
*******************************************
*
* Emily D. Harrod
* NOAA/NESDIS/OSDPD/IPD
* Product Systems Branch
* Pre-Product Processing Group
* E/SP13, Federal Building #4, room 0318
* 5200 Auth Road
* Suitland, Maryland 20746-4304
* USA
* voice 301-457-5247
* fax 301-457-5199
* email Emily.Harrod@noaa.gov
*
*******************************************

---------------------------------------------------------------------

Emily D. Harrod
Mathematician
NOAA/NESDIS/OSDPD/IPD
Product Systems Branch

Emily D. Harrod
Mathematician
NOAA/NESDIS/OSDPD/IPD
Product Systems Branch
E/SP13 FB#4 room 0318 5200 Auth Road Fax: 301-457-5199
Suitland Work: 301-457-5247
MD
20746-4304
US
Additional Information:
Last Name Harrod
First Name Emily