Microwave radiometry has become my new favorite area of research. I am extremely excited about our ability to use microwave emission from a solid surface body to constrain subsurface temperature, thermal and dielectric properties. This shows promise to map minerology, subsurface rocks, and potentially subsurface ice and geothermal heat flux. 

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I am working on this problem on several fronts. In ~2012 the Chinese space agency orbited two microwave radiometer instruments around the Moon. These instruments have revealed a wealth of information about the subsurface and surface composition (our maps in green to the right).

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I am also a Co-I on the MWR (MicroWave Radiometer) instrument on Juno, looking at data from Ganymede, Europa, and Io. We are excited to add some constraint to the crustal properties and shell thicknesses on the icy moons.

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We have also been observing the Moon with Arecibo, the VLA, and Greenbank radio observatories. I am also testing this work on Mars with the Mars 2020 RIMFAX instrument in a passive mode. These are all coming together into a new instrument we are building through NASA's DALI program at JPL which we hope to fly to the Moon, Mars and other bodies.

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