Update on 2016 April 13: generation of Terra / MODIS atmospheric products has now restarted as of 2016 April 8. Likewise, atmospheric imagery from that date forward is now available in GIBS. See the full details.
Original post from 2016 March 3:
The Terra spacecraft along with its MODIS instrument entered safe mode on 2016 February 18 during an inclination adjustment maneuver (IAM). It recovered from safe mode into normal mode on February 22 and reentered into science operations on February 24. Data will therefore be missing between February 18-24.
Though the data is currently being acquired and processed, the resulting data products are degraded and are not expected to meet science quality due to instrument temperatures not yet reaching their normal operating value. Most atmosphere products and some land products are disabled. As of 2016 February 4 000z, land products will resume processing and atmosphere products will resume at a future date.
GIBS imagery products are dependent on these data products and will be produced accordingly.
Please contact support@earthdata.nasa.gov if you have further questions.