Soil Moisture 2013-2024 (raster 1km), Ground-Based Observations for Validation project sites - version 4.1.0, Dec 2025

Soil moisture corresponds to the volumetric fraction of water contained in the soil, expressed in cubic meters of water per cubic meter of soil (m³/m³). The GBOV service (Ground-Based Observations for Validation) is a project funded by the European Commission. Its objective is to provide analysis-ready validation data to support the evaluation of Earth Observation products. The core aim of GBOV is to generate upscaled products derived from ground-based measurements. This dataset consists of Land Products (LPs) generated using surface soil moisture in-situ measurements collected from stations located in North America, Europe, Australia, Africa and Asia. These ground data are combined with SLSTR Level 2 LST products and SLSTR Level 1 NDVI to build this upscaled Soil Moisture LP. The product resolution is 0.1degx0.1deg.