MODAPS PCR 15-008
| PCR Number | 15-008 |
|---|---|
| Date | 2015-03-21 |
| Initiator | Jim Ray |
| Abstract | PGE11 v6.3.11. Changes to fix bugs in orbital maneuver and dropped scan processing. Changed code to handle the Interim Surface Reflectance (IDS) outputs of MOD_PR09.exe - code to run update_ids_scandata() only if the granule had at least one corrected scan (e. g., outside of a maneuver) -- code inside atmospheric_correction() which sends a flag to IDS routines (update_ids() and update_coarse_grid()) to handle post-maneuver scans differently than the rest (because these scans have distorted geolocation values at their start). |
| Problem Statement | PGE fails to generate orbital products while processing orbits with data granules acquired during routine maneuvers. |
| Description of Change | Changes to PGE11 routines that handle the generation of orbital products. Addition of code to prevent orbital product generation during maneuvers and to handle scans immediately after orbital maneuvers differently than normal scans. |
| Products Affected | MxD09CMG |
| Software Affected | PGE11 v6.3.11 |
| Processing String to Receive the Change | Terra Reprocessing and Aqua Reprocessing |
| Downstream Product Effects | None. |
| Data Granules to be Used for Science Testing | Process two days generating global product -- L2 and CMG; a normal day and a maneuver day2010-059 |
| Justification | PGE11's Interim Surface Reflectance orbital products are generated as inputs to the downstream surface reflectance CMG product. The Interim product generation has failed during orbital maneuvers, leaving the CMG with data gaps. |
| Effective Date for Implementation of Change | 2015-03-12 |
| Status | Major algorithm development completed. Sadashiva Devadiga approved on 04/03/2015. |
