MODAPS PCR 11-045
| PCR Number | 11-045 |
|---|---|
| Date | 2011-12-06 |
| Initiator | MaoSheng Zhao and Sadashiva Devadiga |
| Abstract | Due to cloud contamination and it not being of optimal quality, PGE38 (C4/C5/C5.1) is being pulled from MODAPS production and LAADS distribution for (MOD17A3/MYD17A3). |
| Problem Statement | The yearly GPP/PSNnet product MOD17A3 produced at MODAPS using PGE38 is cloud contaminated and is not of optimal quality. NTSG at Montana produces the best quality product at the end of the year. Users who are not well informed use the lower quality product distributed from DAAC and LAADS. |
| Description of Change | Pull off PGE38 from production at MODAPS. Delete or hide all yearly MOD17A3 products at LAADS and LP-DAAC that are generated from the collection reprocessing (C4/C5/C5.1) done at MODAPS. Distribute the MOD17A3 from the SCF (NTSG/Montana) as C5.5 from LAADS and LP-DAAC. MODAPS will still run PGE37 to generate C5/C5.1 MOD17A2 (8-day composite) for real time users of the product since the gap-filled cloud clean MOD17A2 from the SCF is available only after the end of the current data year. |
| Products Affected | MOD17A3 |
| Software Affected | PGE38 (C4/C5/C5.1); Process: MOD_PR17A3 |
| Processing String to Receive the Change | Terra Forward, Terra Reprocessing, Aqua Forward, Aqua Reprocessing |
| Downstream Product Effects | None. |
| Data Granules to be Used for Science Testing | MODAPS test and verify the updated recipe after dropping off the PGE38 from the current version of the recipe.2010-059 |
| Justification | This will avoid use of lower quality MOD17A3 product by users in their work and any inter-comparison of results from use of different versions of the products with difference in quality. |
| Effective Date for Implementation of Change | To be completed by MODAPS after approval of the PCR. |
| Status | Sadashiva Devadiga approved for Land on 12/20/2011; Michael King approved on 12/22/2011. |
