The Aura MLS instrument was placed in stand-by mode on Saturday March 26 at approximately 18:05 UTC. Instrument staff at NASA's Jet Propulsion Laboratory worked diligently to return the instrument to working status. The Aura MLS instrument resumed normal operating status on April 19, 2011.
Please note there is a gap of missing data between March 26, when MLS was placed in stand-by mode, and April 19.
The Earth Observing System "Aura" satellite was launched on July 15, 2004, and carries a complement of four instruments: the Microwave Limb Sounder (MLS); the Tropospheric Emission Spectrometer (TES); the Ozone Measuring Instrument (OMI); and the High Resolution Dynamics Limb Sounder (HIRDLS).
The Goddard Earth Sciences Data and Information Services Center (GES DISC) archives data from MLS, OMI, and HIRDLS. These data can be searched for and ordered using the GES DISC data search system, Mirador.
Aura Microwave Limb Sounder
GES DISC Mirador