A5035365770- Soil Moisture and Remote Sensing
- Geophysics and Gravity Measurements
- Soil and Unsaturated Flow
- Soil Geostatistics and Mapping
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geophysical Methods and Applications
- Precipitation Measurement and Analysis
TU Wien
2022-2024
Gwangju Institute of Science and Technology
2023
Czech Academy of Sciences
2023
Backscatter measured by scatterometers and Synthetic Aperture Radars is sensitive to the dielectric properties of soil normally increases with increasing moisture content. However, when dry, radar waves penetrate deeper into soil, potentially sensing subsurface scatterers such as near-surface rocks stones. In this paper we propose an exponential model describe impact on C-Band backscatter measurements acquired Advanced Scatterometer (ASCAT) board METOP satellites. The predicts increase...
Soil moisture retrievals from the Advanced Scatterometer (ASCAT) have so far relied on assumption that soil backscatter increases monotonically with content. However, under dry conditions, discontinuities in profile caused by presence of stones, rocks, or distinct layers may disturb this relation, causing to decrease increasing wetness. As yet, subsurface scattering is a poorly understood phenomenon and some its manifestations ASCAT past been wrongly attributed topographic effects changes...
Agriculture faces increased challenges due to intense and frequent droughts caused by climate change. Accurate timely monitoring of drought conditions, therefore, becomes paramount taking quick decisive actions towards its impact mitigation. Agricultural occur prolonged periods low rainfall high temperatures, which lead soil moisture deficits, increasing plant water stress adversely affecting crops. This study explores the potential use a new demonstrational ASCAT surface (SSM) product...
<p>Microwave pulses can penetrate several centimeters to decimeters into dry soils. As a result, active microwave sensors are sensitive discontinuities in the soil profile caused by presence of stones, rocks or distinct layers. Such subsurface scattering effects disturb retrieval moisture, vegetation and other land surface properties from measurements. In this study we mapped scatterers impacting C-band backscatter measurements acquired Advanced Scatterometer (ASCAT) on global scale....
<p>Microwave pulses can penetrate several centimeters to decimeters into dry soils. As a result, active microwave sensors are sensitive discontinuities in the soil profile caused by presence of stones, rocks or distinct layers. Such subsurface scattering effects disturb retrieval moisture, vegetation and other land surface properties from measurements. In this study we mapped scatterers impacting C-band backscatter measurements acquired Advanced Scatterometer (ASCAT) on global scale....