Airborne research using microwave radiometry which focuses on either the improvement of the assimilation of satellite data or development of future measurement techniques or missions.
The group uses the onboard microwave radiometers Deimos, MARSS and ISMAR to study surface emission and atmospheric radiative transfer in both clear air and cloudy skies. Deimos measures microwave radiation at 23.8 and 50.3 GHz and was designed to estimate surface emission at frequencies used by the AMSU-A satellite instrument. MARSS is an AMSU-B/MHS simulator and thus has been used in the calibration and validation of both AMSU-B and MHS. MARSS has also been used to estimate surface emission as well as to study microwave atmospheric radiative transfer in clear and cloudy skies. MARSS is also used to monitor qualitatively changes in the total water column above the aircraft in support of other science objectives. ISMAR is an instrument which is currently under development and will measure radiation in the 200-1000 GHz frequency range. It will act as an airborne demonstrator for a possible future ESA satellite instrument which will monitor ice clouds.