CYGNSS

I built JPL’s operational Level-3 soil-moisture product for CYGNSS, and I lead an ongoing NASA ROSES-funded effort — as PI, since 2021 — to improve that retrieval and add a vegetation optical depth product using CYGNSS v3 data. Earlier, I was Co-I on the mission’s original soil-moisture algorithm and validation effort (2018–2021).

It’s the same soil-moisture question as SMAP, answered through a completely different measurement: navigation-satellite signals reflected off the land surface instead of a dedicated radiometer. That’s reflected in the reflectometry retrieval model I co-developed and in a recent multi-source merged CYGNSS soil-moisture product I contributed to.