Global Monitoring
of the Hydrosphere
with Radar Satellites


Radar instruments onboard satellites can see through clouds and can be operated day and night. They can monitor changes in water content in soil, vegetation and snow, detect when the Earth surface is frozen, and map inundation patterns. Therefore, radar satellites are ideally suited for monitoring hydrological processes over land.

The goal of our research is to develop practical methods for the retrieval of hydrologic parameters from radar satellites.

We use the scatterometers onboard the ERS and the upcoming MetOp satellites for global monitoring of soil moisture, the Advanced SAR (ASAR) instrument onboard the ENVISAT satellite for mapping wetlands, and the SeaWinds scatterometer onboard QuikSCAT for freeze-thaw monitoring in high-latitude regions. It is important for us that the products we derived are used by the scientific community.