Brightness Temperature and Soil Moisture Validation at Different Scales During the SMOS Validation Campaign in the Rur and Erft Catchments, Germany

Validation of Spaceborne and Modelled Surface Soil Moisture Products with Cosmic-Ray Neutron Probes

“…The Rur catchment is part of the Terrestrial Environmental Observatories (TERENO) network [80,81]. Several point-scale soil moisture sensors have been already used to evaluate airborne active and passive L-band retrievals [18,78,82] and to validate SMOS [18,83], ASCAT [83], and AMSR2 products [14]. Data are available from the International Soil Moisture Network (ISMN) [39] and the TEODOOR data base [84], and is directly delivered to NASA for SMAP validation [85].…”

Estimation and Validation of RapidEye-Based Time-Series of Leaf Area Index for Winter Wheat in the Rur Catchment (Germany)

“…The TERENO-initiative (Terrestrial Environmental Observatories [54] has established several test sites at different locations within this catchment covering cropland (Selhausen and Merzenhausen in Figure 1), grassland (Rollesbroich in Figure 1) and forests (Wuestebach in Figure 1) [55,56]. The southern part of the catchment is covered by the bedrock of the Eifel Mountains with a high annual precipitation and a moderate potential evapotranspiration, while the northern part receives relatively low annual precipitation and higher potential evapotranspiration [57].…”

Validation of SMOS L1C and L2 Products and Important Parameters of the Retrieval Algorithm in the Skjern River Catchment, Western Denmark

“…So far, SMOS validation work has focused on SMOS L2 soil moisture and the L1C brightness temperature product [17], [34], [35], [43], [44]. However, to investigate uncertainties inherent in the SMOS retrieval algorithm, also the most sensitive input parameters should be checked.…”