The Global Earth Observation System of Systems (GEOSS) links a variety of existing and future observation systems and forecasting models into one comprehensive system of systems to provide accurate environmental data and to enable an encompassing vision and understanding of the Earth system....

Nitrogen is an important input to agricultural production but also detrimentally affects the environmental quality of air, soil and water. Identifying the determinants of nitrate pollution and in turn defining sensible performance indicators to design, enforce and monitor regulatory policies is...