MODAPS PCR 06-017

PCR Number 06-017
Date 2006-10-01
Initiator Carol Davidson
Abstract Fix to correct the dropping of orbits in the daily CMG.
Problem Statement Orbits were being dropped during processing. This turned out to be the result of how production rules were implemented.
Description of Change Two changes:
1) modified source code so that it would compare the dataday of the inputs against the dataday stored in LUN 10258 of the pcf and process those that related to that dataday and discard those that did not.
2) modified production rules to stage the inputs for the dataday to be processed as well as those for the previous dataday to insure that no orbital products are missed as inputs.
Products Affected L3 Land Surface Reflectance CMG (MOD09CMG, MOD09CMA)
Software Affected PGE75
Processing String to Receive the Change Terra Reprocessing, Aqua Reprocessing
Downstream Product Effects None.
Data Granules to be Used for Science Testing 2000-175 - 2000-177, full data days, to insure orbital inputs that cross data day boundaries are processed correctly.
Justification This change will prevent holes in the PGE75 outputs by insuring that all potential inputs are staged and processed accordingly.
Effective Date for Implementation of Change Data day 2000-160 for C5 Terra Reprocessing.
Status PI approved. Sadashiva Devadiga approved for Land, Vincent Salomonsom approved on 10/17/06.