MERRA2 Data Lessons for next REANL

This is just a scratch place to put notes on obs as they are found in MERRA2.

• AMSU-A N19. The date of death in active channels database is 20091222 000000 for Channel 8. This isn't proper, however, as the channel is seemingly dead from the get-go of the Jan10 stream. Eventually, a true death date will need to be determined.