15.2 By 2020, promote the implementation of sustainable management of all types of forests, halt deforestation, restore degraded forests and substantially increase afforestation and reforestation globally

The article discusses the use of space technology for the Water-Energy-Food (WEF) Nexus. The nexus was formed to address issues surrounding the increasing demand for water, energy and food. Drivers of the nexus are, for example, an increasing population, urbanisation and economic development. The article aims to demonstrate the inclusive solutions and initiatives from organisations such as United Nations, Food and Agriculture Organization (FAO) and Group on Earth Observations (GEO). Globally available data for the nexus and especially data from satellite remote sensing are discussed. Several case studies for finding solutions related to the nexus are examined. The case studies discuss hydrological modelling, water scarcity, irrigation practices and crop monitoring. The Global Land Evaporation Amsterdam Model dataset and Moderate Resolution Imaging Spectroradiometer instrument are used in these case studies. Satellite remote sensing products for the example case of the variable soil moisture are examined. Some of the leading missions for soil moisture are National Aeronautics and Space Administration (NASA) Soil Moisture Active Passive (SMAP) and European Space Agency (ESA) Soil Moisture and Ocean Salinity (SMOS). The article mentions NASA Gravity Recovery and Climate Experiment (GRACE) and Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) missions, as well as ESA Climate Change Initiative (CCI) programme. Future work aims at an integrated approach and at achieving the Sustainable Development Goals.