MODAPS PCR 21-007
| PCR Number | 21-007 |
|---|---|
| Date | 2021-02-22 |
| Initiator | Sudipta Sarkar |
| Abstract | PGE132 6.0.31 -- Changed background color from grey to black for MAIAC RGB products |
| Problem Statement | The operational GIBS L3 Land process for Collection 6 (PGE132 V6.0.30) was showing all the fillvalues and missing tiles in the MAIAC RGB true-color images in grey. Science team suggested black as a suitable alternative for the RGB images of MAIAC MCD19A1/A2 products. |
| Description of Change | PGE132 V6.0.31 has been updated to change the background color from grey to black for MAIAC RGB products (MCG19*) |
| Products Affected | MODIS C6 Land L3 GIBS products |
| Software Affected | PGE132 6.0.31 |
| Processing String to Receive the Change | Terra and Aqua Forward Processing. NRT |
| Downstream Product Effects | None |
| Data Granules to be Used for Science Testing | A science test was not deemed necessary given the relatively minor nature of the change and it was confirmed by LDOPE through an internal unit test. |
| Justification | The PGE132, operating in the OPS and NRT streams, for C6, was producing the 3-layer RGB JPEG images for MCD19A1/A3 visible bands with a grey colored background. But the science team thought that changing the background to black will help them and the users of these products, better distinguish the missing areas from areas of valid retrievals. Hence, the background color was changed from grey to black, starting V6.0.31 |
| Effective Date for Implementation of Change | As soon as possible. |
| Status | Major algorithm development completed. Sadashiva Devadiga approved on 2/23/2021. Gang Ye approved on 2/22/2021. |
