NISAR

My NISAR work sits inside SMAP. Since 2024, I’ve been building the active-passive soil-moisture algorithm that fuses SMAP radiometer data with NISAR’s L-band SAR — the retrieval NISAR’s soil-moisture products are expected to draw on once the mission is on orbit. I lead this as PI of a five-year NASA ROSES USPI award, and it’s the direct continuation of the freeze–thaw and soil-moisture work I’ve done under SMAP.

I also contribute to the mission’s snow side: as Co-I on a NASA-funded project, I help build a multi-frequency InSAR phase data-assimilation framework for tracking seasonal snow water equivalent, aimed at the kind of repeat-pass InSAR NISAR is expected to support.