MODAPS PCR 17-015
| PCR Number | 17-015 |
|---|---|
| Date | 2017-06-30 |
| Initiator | Sudipta Sarkar |
| Abstract | PGE131 v6.0.13. Changed PGE131 to increase memory allocation for holding scan level start time information. |
| Problem Statement | L3 LST (MOD21A1D/N) process failed while attempting to read the L1 geolocation data. |
| Description of Change | Increased the NUM_SCAN constant to provide for more scan line allocation, to avoid memory errors. Some geolocation files have 1 more scan than the rest. |
| Products Affected | Daily L3 LST - MOD21A1D, MOD21A1N, MYD21A1D, MYD21A1N |
| Software Affected | PGE131 v6.0.13 |
| Processing String to Receive the Change | Terra and Aqua Forward Processing. Terra Reprocessing. |
| Downstream Product Effects | None. |
| Data Granules to be Used for Science Testing | Unit test only. No extensive science test required as there was no change to the science code. |
| Justification | Without this change process would have failed to generate the tiles at random when the input geolocation file contained an extra scan. Now these tiles are generated with good retrievals. |
| Effective Date for Implementation of Change | Completed. |
| Status | Major algorithm development completed. Sadashiva Devadiga approved on 07/30/2017. Michael King approved 08/25/2017. Gang Ye implemented 08/28/2017. |
