MODAPS PCR 23-002
| PCR Number | 23-002 |
|---|---|
| Date | 2023-02-01 |
| Initiator | Sudipta Sarkar |
| Abstract | PGE36/36G 6.1.6, PGE37/37G 6.1.6, PGE38/38G 6.1.6, PGE117/117G/117GM 6.1.11, PGE118/118G 6.1.11, PGE119/119G 6.1.11 Updated the previous RangeBeginningDate and RangeEndingDate derived from the input MxD15A2H(GF) file but use data_day so that the two terms have the correct values in the metadata of CoreMetadata.0. = |
| Problem Statement | The C61 GPP/NPP and ET/PET n-day processes were relying on input MxD15 files to set the RANGEBEGINNINGDATE and RANGEENDINGDATE, which would occasionally be set wrong if the MxD15 inputs were used from the prior 8-day period. |
| Description of Change | The related PGEs were changed to set these dates based on the PGE_StartTime and PGE_EndTimes, defined in the PCF files, during the execution of the code. |
| Products Affected | All n-day C61 GPP/NPP and ET/PET products, including MxD16A2/A2GF, MxD16A3/A3GF, MxD17A2H/A2HGF, and MxD17A3H/A3HGF, regular and gap-filled versions. |
| Software Affected | PGE36/36G 6.1.6, PGE37/37G 6.1.6, PGE38/38G 6.1.6, PGE117/117G/117GM 6.1.11, PGE118/118G 6.1.11, PGE119/119G 6.1.11 |
| Processing String to Receive the Change | Terra and Aqua Forward Processing. |
| Downstream Product Effects | None |
| Data Granules to be Used for Science Testing | A science test was conducted in AS 1930 and all results were confirmed by LDOPE. |
| Justification | These concerned PGEs for n-day processing of ET/PET and GPP/NPP products were relying on the input MxD15 files to read and set the range begin and ending dates. But often, during an instrument outage, when the MxD15 inputs were not available for that said n-day period, the ones from prior period would be staged and this would result in wrong dates in the metadata. So this was avoided by relying on the PGE_StartTime and PGE_EndTimes to set these, like all other L3 PGEs |
| Effective Date for Implementation of Change | All revised PGEs and Recipes were put in forward processing, starting 01/24/2023. |
| Status | Major algorithm development completed. Sadashiva Devadiga approved on 02/07/2023. Sudipta Sarkar implemented on 02/01/2023. |
