The research unit Cosmic Sense funded by the German Science Foundation DFG to advance the Cosmic Ray Neutron Sensing (CRNS) technology and its applications:

• https://www.uni-potsdam.de/en/cosmicsense

The cosmic-ray soil moisture monitoring network COSMOS-UK, established by the UK Centre for Ecology & Hydrology and funded from the Natural Environment Research Council, for long-term monitoring of soil moisture across the United Kingdom:

• https://cosmos.ceh.ac.uk

The European Metrology Network for Climate and Ocean Observation (EMN COO), established by EURAMET, supporting the application of metrology to climate and ocean observations:

• https://www.euramet.org/climate-and-ocean-observation

The project FRM4SM (Fiducial Reference Measurements for Soil Moisture), funded by the European Space Agency (ESA), aiming at bringing together the expert knowledge of in-situ and satellite soil moisture data providers and soil moisture validation best practices integrated into an operational validation framework:

• https://earth.esa.int/eogateway/activities/frm4sm-fiducial-reference-measurements-for-soil-moisture

The International Soil Moisture Network (ISMN), an international cooperation to establish and operate the global in-situ soil moisture database, creating an essential platform for validating and improving global satellite products, and land surface, climate, and hydrological models:

• https://ismn.earth

The Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, a partnership of the Food and Agriculture Organization of the United Nations (FAO) and the International Atomic Energy Agency (IAEA), specifically the Subprogramme Soil and Water Management and Crop Nutrition (SWMCN):

• https://www.fao.org/agriculture/fao-iaea-nuclear-techniques/en
• https://www.iaea.org/about/organizational-structure/department-of-nuclear-sciences-and-applications/joint-fao/iaea-centre-of-nuclear-techniques-in-food-and-agriculture
• https://www.iaea.org/about/soil-and-water-management-and-crop-nutrition-section
• https://crnslab.org/network-maps/networks/iaea

The EU-funded project MAGDA (Meteorological Assimilation from Galileo and Drones for Agriculture), aiming to develop a toolchain for atmosphere monitoring, weather forecasting, and hydrological modelling with Europe's Global Navigation Satellite System (GNSS) Galileo and the European Union's Earth Observation programme Copernicus:

• https://magdaproject.eu

The metrology projects EMRP ENV07 MeteoMet "Metrology for pressure, temperature, humidity and airspeed in the atmosphere" and EMRP ENV58 MeteoMet2 "Metrology for essential climate variables" funded in the European Metrology Research Programme of EURAMET:

• https://www.meteomet.org
• https://www.euramet.org/research-innovation/search-research-projects/details/project/metrology-for-pressure-temperature-humidity-and-airspeed-in-the-atmosphere
• https://www.euramet.org/research-innovation/search-research-projects/details/project/metrology-for-essential-climate-variable

The German network TERENO (Terrestrial Environmental Observatories), an interdisciplinary and longterm research programme involving six Helmholtz Association Centers that aims to catalogue the longterm ecological, social and economic impact of global change at regional level:

• https://www.tereno.net