What question did this study set out to answer?

The objective is to establish best calibration practices for retrieving soil moisture data using CRNS technology under various field conditions.

March 1, 2026Open Access

Deliverable D4: Good practice guide for calibration practices for CRNS soil moisture data retrieval in outdoor field conditions covering on lateral scales ranging from 10² m to 10³ m and to depths of up to 1 metre

Key Points

The objective is to establish best calibration practices for retrieving soil moisture data using CRNS technology under various field conditions.
Reviewed existing calibration practices for CRNS soil moisture data.
Analyzed outdoor field conditions relevant to soil moisture retrieval.
Compiled guidelines tailored for lateral scales of 10^2 m to 10^3 m and depths up to 1 m.
Developed a comprehensive guide for effective calibration of CRNS soil moisture data.
Identified key factors influencing data accuracy in outdoor settings.
Outlined suitable calibration techniques for various spatial and depth scenarios.

Abstract

This document presents Deliverable D4, "Good practice guide for calibration practices for CRNS soil moisture data retrieval in outdoor field conditions covering on lateral scales ranging from 10² m to 10³ m and to depths of up to 1 metre, " 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

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