MODAPS PCR 17-013
| PCR Number | 17-013 |
|---|---|
| Date | 2017-06-28 |
| Initiator | Hulley, Glynn |
| Abstract | PGE116 v6.0.59. Changed PGE116 to handle the dead detectors in band 29, retrieve LST, but flag these retrieval in the QA flags as not retrieved because of poor calibration. |
| Problem Statement | Bad LST retrieved for Terra MODIS due to dead detectors in band 29 for the Terra mission starting day 2006241. |
| Description of Change | Fixed a bug to detect LST along scans where input L1B Band 29 has a dead detector and flag the retrievals as "not retrieved because of poor calibration". |
| Products Affected | MOD21 (Daily L2 LST) |
| Software Affected | PGE116 v6.0.59 |
| Processing String to Receive the Change | Terra Forward Processing and Terra Forward Processing. |
| Downstream Product Effects | None. |
| Data Granules to be Used for Science Testing | Run test over selected days in 2006 where the issue was first seen and verified by LDOPE |
| Justification | Terra Band 29 in L1B had a dead detector starting data day 2006241. Without the fix in the operational code to handle the dead detector, the PGE would have retrieved the LST for these scan lines and flagged the retrievals as good. This new PGE116 (V6.0.59) flags the LST at these pixels as not retrieved because of "Poor Calibration". |
| Effective Date for Implementation of Change | Completed. |
| Status | Major algorithm development completed. Sadashiva Devadiga approved on 07/30/2017. Michael King approved 08/26/2017. Gang Ye implemented 08/28/2017. |
