Aqua MODIS FMU/SSR Anomaly

Mar 10, 2022

On February 22, 2022, a Formatter-Multiplexer Unit (FMU) / Solid State Recorder (SSR) anomaly began to affect Aqua MODIS in which 17-19 seconds of Aqua's high-rate science data are corrupted approximately every two orbits (roughly every 3 hours 28 minutes and 15 seconds). A plan of action is being developed to address the corrupted sub-module, but before recovery takes place, the memory will suffer about seven losses per day or 133 seconds of high-rate science data. A list of affected acquisition times for all Aqua MODIS Version 6 and 6.1 data products is being maintained in the detailed description for the FMU/SSR anomaly.

An update on the data recovery will be announced via news announcements on the LP DAAC website. Subscribe to the LP DAAC’s listserv by sending a blank email to to receive listserv messages from the LP DAAC regarding recent updates.

We apologize for any inconvenience this may have caused. Please contact LP DAAC User Services with any questions or concerns.