MODAPS PCR VNP 20-001
| PCR Number | VNP 20-001 |
|---|---|
| Date | 2020-02-24 |
| Initiator | Sudipta Sarkar |
| Abstract | PGE600 (CR generation): 1. Updated num_day_375m_rows to prevent running on Night granules 2. Updated code for new filenames 3. Changed LoaderModule and production perl scripts to allow for different time intervals to run the code ex. 1 hour PGE603 (FIRMS Fire table generation): 1. Updated to run at 1 hour intervals 2. Added code and logic for J1 FIRMS products . PGE620 (Swath to tile mapping): 1. Updated to run at 1 hour intervals 2. Removed some of the output products for PGE620L1 (assorted VNR02 products) 3. Corrected VNR01 files to be VNR02 (in V2.0.2) 4. Added PGEVersion as a metadata element 5. Corrected TileDataDay to write proper grantime values 6. Made changes to find the NRT and J1 geolocation file names. 7. Removed _NRT from output ESDTs. 8. Added missing Geolocation Filename variations for STD runs (not relevant for NRT) 9. Fixed a missing entry looking for VNP geolocation Filenames in projection.c for STD run that was accidentally overwritten by an NRT filename search. 10. Patched a LoaderModule omission referring to GD1 as a valid recipe in the list of recipes to be run. |
| Problem Statement | Implement changes to different GIBS processes for the following: 1. Switch S-NPP C1 GIBS CR/L1 imageries and FIRMS products from IDPS SDR in AS 5000 to NASA L1B in AS 5001 on nrt. 2. Introduce the J1 C2 GIBS CR/L1 and FIRMS products from AS 5200 on nrt. 3. Change GIBS NRT ESDTs for different products to distinguish the PDR data types between NRT and OPS processing streams. |
| Description of Change | Several changes were made to different GIBS PGEs for generation of corrected reflectances (CR), granules to GIBS tiles conversions and FIRMS product generation. These mainly involved making suitable changes to different PGE specific LoaderModules and production scripts to change the GIBS product generation interval, introduce J1 GIBS and FIRMS products, remove some of the obsolete ESDTS and update some of the NRT specific GIBS ESDTs as per the GIBS team recommendations. |
| Products Affected | S-NPP and J1 375m active fire FIRMS products in NRT (VNP14IMGT_NRT and VJ114IMGT_NRT respectively) as well as the CR and Band I5 GIBS products from NRT and OPS stream respectively for S-NPP and J1 VIIRS. |
| Software Affected | PGE600 2.0.1 PGE603 2.0.1 PGE620 2.0.4 PGE620GD1 2.0.4 |
| Processing String to Receive the Change | NRT |
| Downstream Product Effects | None |
| Data Granules to be Used for Science Testing | Science tests have been carried out for both S-NPP and J1, extensively from NRT4 and verified through LDOPE internal assessment. |
| Justification | 1. These changes will enable GIBS and FRIMS to use imageries of better quality products derived from use of NASA L1B. 2. GIBS Switch S-NPP C1 GIBS CR/L1 imageries and FIRMS products from IDPS SDR in AS 5000 to NASA L1B in AS 5001 on nrt. 3. Introduce the J1 C2 GIBS CR/L1 and FIRMS products from AS 5200 on nrt. 4. In addition, some changes to GIBS NRT ESDTs for different products were also made to distinguish the PDR data types between NRT and OPS processing streams. |
| Effective Date for Implementation of Change | PGE600 V2.0.1, PGE603 V2.0.1, PGE620 V2.0.4, PGE620GD1 V2.0.4 were put in nrt3/4 for S-NPP on 02/26/2020. |
| Status | Sadashiva Devadiga approved 02/24/2020. Gang Ye approved on 02/26/2020. |
