Deliverable D3: Report on the comparison and validation of existing neutron transport models used to interpret CRNS signals measured under outdoor conditions

This document presents Deliverable D3, "Report on the comparison and validation of existing neutron transport models used to interpret CRNS signals measured under outdoor conditions," of the 21GRD08 SoMMet (Soil Moisture Metrology) project, funded under the European Partnership on Metrology from October 2022 to September 2025. The project 21GRD08 SoMMet has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States. • Funder name: European Partnership on Metrology• Funder ID: 10.13039/100019599• Grant number: 21GRD08 SoMMet