Soil water infiltration observation with microwave radiometers

Ground-based millimeter and submillimeter-wave radiometry for the observation of the Arctic atmosphere

Microwave radiometers working at millimeter and submillimeter wavelengths show enhanced sensitivity to low contents of water vapor and cloud liquid in the atmosphere with respect to conventional radiometers working at centimeter wavelengths. This enhanced sensitivity gives particular interest to high-frequency radiometers for the accurate observations in extreme dry and cold conditions typical ...

Soil Moisture Sensing with Microwave Radiometers

A Change Detection Algorithm for Retrieving High-resolution Surface Soil Moisture from Smap L-band Radar and Radiometer Observations

Soil moisture is a critical hydrological variable that links the terrestrial water, energy and carbon cycles. Global and regional observations of soil moisture are needed to estimate the water and energy fluxes at the land surface, to quantify the net carbon flux in boreal landscapes, to enhance weather and climate forecast skill and to develop improved flood prediction and drought monitoring c...

Application of artificial neural networks for the soil moisture retrieval from active and passive microwave spaceborne sensors

Among the algorithms used for the retrieval of SMC from microwave sensors (both active, such as Synthetic Aperture Radar-SAR, and passive, radiometers), the artificial neural networks (ANN) represent the best compromise between accuracy and computation speed. ANN based algorithms have been developed at IFAC, and adapted to several radar and radiometric satellite sensors, in order to generate SM...

Study on the relationship between soil moisture and its dielectric constant obtained by space-borne microwave radiometers and scatterometers

For obtaining spatial-temporal soil moisture information in large range, a study on the relationship of soil moisture and dielectric constant obtained by space-borne microwave radiometers and scatterometers data was performed. Microwave signal is much related to dielectric constant of object observed, and soil dielectric constant is decided by soil moisture, this is the basis of using microwave...