Page 1 GOES15 SOUNDER OPEN GIRS 1142010 GOES15

Page 1 GOES-15 SOUNDER OPEN GIRS 11/4/2010

GOES-15 SOUNDER GIRs § PSPOT-0003 – Striping on First Public IR Sounding – Noticed first on Channel 15, and then on other SW channels. – 7/21, 7/28 – Switched to Side 2 and back with no remedy. § PSPOT-0004 – Signal Jumps in GOES-15 Sounder MW #2 Detector Data – Observed during scanning (dynamic) and star (static) operations. – In spec with less than 10 counts jumps. Not comparable to GOES-14 loose beam extending lens problem.

GOES-15 SOUNDER GIRs § PSPOT-0005 – Sounder Patch Temperature Anomaly Following Yaw Flip – Patch Temperature Control was lost right after Yaw Flip and patch reached 99 C (102 C later) – Analysis concluded potential dislocation of roll blanket between the cooler and the FW bucket – Operational Remedy – Yaw Flip very close to each Equinox – Operational Impact (Twice per year) – Out-of-spec performance up to 28. 5 hours with partial (~70%) scheduled products due to INR recovery.

GOES-15 SOUNDER GIRs § PSPOT- 0006 – GOES-15 Sounder SW Det 2 Line to Line Relative Accuracy – Detector 2 of the GOES-15 Sounder shortwave channels is exhibiting offsets which cause degraded line-to-line relative accuracy performance. Channel 14, Detector 2 is the only channel to exceed the specification referenced in S-415 -05, paragraph 3. 3. 20. 2 -1. – ITT is still characterizing.