Pacs Data Availability (%) s3

ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

POLAR Spacecraft Status As of: Thurs 14 Feb 2008, 12:00 EST (Changes from last week in bold border) Subsystem/ NOAA-15K NOAA-16L NOAA-17M NOAA-18N AM: 17:49=AN PM: 15:04=AN AM: 22:23=AN PM 13:49=AN Component GAC data only GAC data GAC&LAC data GAC & LAC data LAUNCHED 05/13/98 09/21/00 6/24/02 5/20/05 CNTL OBP OBP2 OBP2 OBP2 OBP2 BUS B-BUS B-BUS B-BUS B-BUS XSU-1 XSU-2: TOAR472 XSU-2: TOAR 471 XSU-1 1/15/08 BUS VETO NO NO NO NO ADACS Nominal Mode RGYRO Mode Nominal Mode Nominal Mode Rgmode=Monitor Rgmode=Monitor Estimate Y-ROLL Gyro-A MIMU-2 Gyro-3 Off 6/26/00 Gyro Rgmode=PASSIVE Gyro-3 Off 6/10/04 Z-wheel -Pitch chans=AAB Gyros-1 & 3 Inop/Off Gyro chans=AAB GAS TOAR 447 N2 Low PSI invalid Gyro chans XA-ZB Enabled Dec 05 Z-momentum transition Pitch wheel bias 2400 complete Gyro2 safe macro Pitch Torquer again active RXO PRI PRI PRI PRI daily bias -8 mS Daily Bias –5.5 mS Daily Bias –3 mS No daily bias -500 mS 12/31/05 -1500 mS 31Dec05 -1500 mS 31Dec05 -1500 mS 31Dec05 CLOCK DIV 2 2 2 2 MIRP External Synch Rephase External Sync External Sync External Synch 0730 daily Rephase each orbit Rephase Enabled Rephase Enabled TIP SIDE 2 2 2 1 (since 4/3/03) since 4/18/05 Swapped 9/20/06 Analog telem drifting 3 channels inop (analog drifting?) Recorders DTRs 1, 2, 3, 4 Safestate DTRs 1, 2, 3, 4A DTR 1,3,4 / SSR 2 SSRs 1,2,3,4,5 1B EOT Safestate 3A Safestate=SSR 2B Safestate=5B (DTR, SSR) 4B STIP only 4A Pressure leak Current spikes VTX #1 ON OFF / INOP #2 ON #1 ON (APT data) As of 19 June 07 since 11/15/00 137.62 MHZ 137.1 MHZ As of 16 Aug 07 BTX #1 #2 #2 #1 137.35 MHZ 137.77 MHZ 137.77 MHZ 137.35 MHZ STX 2-Omni HRPT 2 – HRPT 1 - HRPT 2 Omni=rcp 2 – HRPT 1 = rcp 1698.0 mhz 1– Playback 3 - Playback Power TOAR 446 4 Restored -11 Oct 2007 TOAR424 low power 2-Playback 2 = lcp 1702.5 mhz 4-Playback 3 low power INOP -10 Aug 2 & 1 Playback 4-Test & Standby 3= rcp 1707.0 mhz 1,2,3-Degraded 2007 STX-1 Power drop 4= rcp 2247.5 mhz STX-4 nominal STX-3 Failed 2/14/08 POWER Array Off -45 Array Off -20 Array Off. –40 Array Off. -40 (Array offset and Since 1/25/01 Since 9/13/07 Since 1/29/04 Since 6/6/05 CANT angle, clipse Full Sun Eclipse all year Eclipse all year Eclipse all year states and sun angle) Sun Angle 13 Sun Angle 34 Sun Angle at 66 Sun Angle 63 uptrend to Uptrend to 18 early Jan 07 Steady trend Steady trend 65 on SA CANT=37 degs SA CANT=22 degs SA CANT=37 degs 1 Jan 07 Full sun S/C in Sept 07 BVR Phase Control auton SA CANT=22 BVR Phase Control auton swap 9/17/07 BVR Phase Control auton swap 7/19/07 Swap back 9/18/07 swap 3/29/06 & 1/4/07 SADPOS Enabled 2/12/08 AVHRR Nominal Nominal Nominal Nominal Channel 3B only Recent SM current 3A-B switch enabled Channel 3B only Occasional minor scan motor increases Previous scan motor current Scan motor current drop 29 instabilities TCE24 OFF 4/14/04 mini surges Aug 06 Channel 3B only AMSU-A1 Operational Operational OFF/INOP Nominal Ch14 inoperative Primary PLLO chans 9-14 Since 10/30/03 Full Scan mode Ch11 inoperative bias shift. Survival heat on. Backup PLLO inop. Channel 9-14 noise `AMSU-A2 Nominal Nominal Nominal Non-nominal DIG-A Temps erratic 2/7/08 AMSU-B Operational Operational Nominal Replaced by MHS Bias in All Chans. Space Position-3 Degraded Chan-3 Chan-8 degradation ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

Subsystem/ NOAA-15K NOAA-16L NOAA-17M NOAA-18N AM: 17:49=AN PM: 15:04=AN AM: 22:23=AN PM 13:49=AN Component GAC data only GAC data GAC&LAC data GAC & LAC data HIRS NOMINAL NOMINAL NOMINAL Operational FW Abrupt return to nominal New all time high filter 1 Pixel cross-track Filter Heat OFF. 7/12/05 motor current reached misalignment. LW channel 1-12 noise TOAR After years of minor and 448 major current surges 9/17/06. Loos Imagery occasionally exhibits e FW mode=Hi Powr high levels of radiometric LWI noise R lens. LW imagery erratic. MHS/MIU Nominal Fly Wheel Motor Current Spiking but not alarming since 27 Dec 06 Entered Motor Spin State on 17 Jan 08 H4 gain increased 2 Oct 07 H3 gain increased 31Oct 07 DCS Nominal Nominal Nominal Nominal RFI investigation Pseudo message turned on DRU’s 1-7 On 1/5/06 DRU8 inop/off SARR Operational Operational Nominal Nominal B-Side, 13 Dec 07 Mode =AA A-side A-Side AGC Mode A-side, AGC Mode All AGC Mode Intermittent failures for All AGC Mode (B-side in FG mode) Since 15 Aug 05 243MHz A&B 243 MHz = INOP. SARP Nominal Nominal Nominal Nominal RCVR B/W = 2 RCVR B/W = 2 A-side 23 May05 SEM Nominal Nominal Nominal Nominal E-CDEM-HVPS=2 E-CDEM-HVPS=7 E-CDEM-HVPS=2 Elec-CH-HVPS=1 P-CDEM-HVPS=0 P-CDEM-HVPS=7 P-CDEM-HVPS=4 27 June 06 17:00z 11 Jan 0714:47z 27 June 06 16:00z Prot-CH-HVPS=1 11 Jan 07 14:15z SBUV Operational Nominal Nominal Degraded Ozone data Anode Mode Anode mode Backup Diffuser inop Plan sweep mode since 6 July 05 13:30z Primary Diffuser deployment Standard Ops Electronics turnoff taken out problem TOAR 426 TOAR 463 sun glint of STESM safestate table AMSU EMI causing erratic TOAR 462 sun glint Behavior in PMT cathod, IBSL test performed 12 range 3 Sept 06 Grating motor investigation SADPOS ON ON ON Enabled MFactor50% ENABLED Enabled Timer = 12 mins Timer = 12mins Timer =12 mins THERMAL TCE26 & 15H Nominal TCE3H Batt 2A heater All TCE’s active Telem valid failed ON, turned off TCE24 OFF 4/14/05 HIRS filter heater turned OFF Heaters, louvers TOAR 432 closed 8/26/03 9/28/06 TCE’s TCE24L&25L (HIRS & (AVHRR H&L) AMSU-A1 survival heaters on AVHRR) failed 5/13/98 HIRS Filter heater turned 10/29/03 RCE thermostat failed 5/13/98 OFF 1/18/05 Spacecraft in thermal uptrend ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

COMMENTS/CHANGES:

NOAA-15: There were relatively no changes to the NOAA-15 payload health situation during the past week.

NOAA-15 IMU continues its unpredictable ways. Gyro 2 has been relatively quiet for the last week. Daily monitoring continues.

NOAA-16: There was relatively no change in the performance of the NOAA-16 payload or bus subsystems during the past week.

Adjusted the limits for NTIP2_3 one count (YH is now 197 raw and RH is now 198 raw) due to TIP drift.

NOAA-17: There was relatively no change in the performance of the NOAA-17 payload or bus subsystems during the past week.

As noted in last week’s weekly report, the SADPOS sun lost flag was not cleared after SADPOS was re-enabled. The SADPOS lost sun flag was cleared by re-enabling SADPOS as a backup after the lost sunlight timer was cleared. SADPOS was re-enabled on 12 Feb 2008. This timer was cleared after full illumination was reached. The SADPOS lost sun flag would not have remained set if a period of full illumination occurred after the solar eclipse and before the re-enabling of SADPOS as the backup SAD control system.

On 14 Feb 2008, it was noted by the CDA that no RF was received from STX-3. The output power of STX-3 was reading a RL voltage of 0.21 Watts, down from its ~2 Watts. This power drop occurred at 00:45z just before a scheduled Wallops pass. See Figure 2. An attempt was made at ~06:00z to recycle the power but it was not successful. A test of STX-4 configured for HRPT was also done at this time. The RF was present but the ground did not receive frames. This appeared to be a ground configuration problem. It was successfully tested later in the day. Additional tests throughout the day of STX-3 were all unsuccessful. A TOAR is being written.

The current plan for reconfiguration of STXs on NOAA-17 & 18 is in the following table:

1 2 3 4

PRIOR TO POST POST FINAL PERMANENT ANOMALY ANOMALY ANOMALY CONFIGURATION UNTIL 15 FEB UNTIL ?? FEB HRPT PBKS HRPT PBKS HRPT PBKS HRPT PBKS NOAA- STX-3 STX-1 STX-4 STX-1 STX-2 STX-1 STX-1 STX-2 17 STX-2 STX-2 DIRECTIONA STX-4 STX-4 L NOAA- STX-1 STX-2 STX-1 STX-2 STX-1 STX-2 STX-3 STX-1 18 STX-3 STX-3 STX-3 STX-2

NOAA-18: There were relatively no changes to the NOAA-18 health situation during the past week.

The NOAA-18 AMSU-A2 instrument continues to show unusual reading in its Digital-A telemetry. See Figures 3-5. A proposed course of action is being investigated. . ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

MetOp-A: There were relatively no changes to the MetOp-A NOAA instruments health situation during the past week.

IASI was recovered twice from HEATER-REFUSE mode. Recovery on Feb. 4 was completed by 19:36 UTC (7 hours data loss) and recovery on Feb. 9 was completed by 14:22 UTC (4 hours data loss). ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

Figure 2 NOAA-17 STX-3 (08/045) ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

Figure 3 NOAA-18 AMSU A2(2008/037-045) ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

Figure 4 NOAA-18 AMSU A2(2008/037-045) ALSO SEE: http://www.oso.noaa.gov/poesstatus/ EMOSS-2

Figure 5 NOAA-18 AMSU A2(2008/037-045)