Using Cosmic-Ray Neutron Probes in Validating Satellite Soil Moisture Products and Land Surface Models
AbstractSoil moisture content is one of the most important parameters of hydrological studies. Cosmic-ray neutron sensing is a promising proximal soil moisture sensing technique at intermediate scale and high temporal resolution. In this study, we validate satellite soil moisture products for the period of March 2015 and December 2018 by using several existing Cosmic Ray Neutron Probe (CRNP) stations of the COSMOS database and a CRNP station that was installed in the south part of Turkey in October 2016. Soil moisture values, which were inferred from the CRNP station in Turkey, are also validated using a time domain reflectometer (TDR) installed at the same location and soil water content values obtained from a land surface model (Noah LSM) at various depths (0.1 m, 0.3 m, 0.6 m and 1.0 m). The CRNP has a very good correlation with TDR where both measurements show consistent changes in soil moisture due to storm events. Satellite soil moisture products obtained from the Soil Moisture and Ocean Salinity (SMOS), the METOP-A/B Advanced Scatterometer (ASCAT), Soil Moisture Active Passive (SMAP), Advanced Microwave Scanning Radiometer 2 (AMSR2), Climate Change Initiative (CCI) and a global land surface model Global Land Data Assimilation System (GLDAS) are compared with the soil moisture values obtained from CRNP stations. Coefficient of determination (
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Duygu, M.B.; Akyürek, Z. Using Cosmic-Ray Neutron Probes in Validating Satellite Soil Moisture Products and Land Surface Models. Water 2019, 11, 1362.
Duygu MB, Akyürek Z. Using Cosmic-Ray Neutron Probes in Validating Satellite Soil Moisture Products and Land Surface Models. Water. 2019; 11(7):1362.Chicago/Turabian Style
Duygu, Mustafa B.; Akyürek, Zuhal. 2019. "Using Cosmic-Ray Neutron Probes in Validating Satellite Soil Moisture Products and Land Surface Models." Water 11, no. 7: 1362.
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