Office for Outer Space Affairs
UN-SPIDER Knowledge Portal
Help Shape the Future of the UN-SPIDER Knowledge Portal
The UN-SPIDER Knowledge Portal is your one-stop platform for resources on space-based disaster risk management. It provides: • Links and guidance on satellite data sources and applications • Recommended practices and step-by-step methodologies • Training materials and tutorials • Case studies and user stories from real-world applications • News and updates on UN-SPIDER activities, events, and global developments
Since its last major review in 2012, the Portal has evolved significantly. Now, we want to hear from you.
We invite you to take part in the 2025 evaluation of the UN-SPIDER Knowledge Portal!
Cartographie des inondations par l‘imagerie satellitaire radar
UN-SPIDER
General Directorate for Civil Protection of the Niger
In order to strengthen the capacity of the General Directorate for Civil Protection of the Niger to use space-based information to respond to floods in the country, UN-SPIDER conducted an online training course on flood mapping with Sentinel-1 radar imagery in Google Earth Engine. During the training, participants were introduced to the basic principles of radar remote sensing, learned to use the recommended practice, explored the process with selected case studies and presented the results in geographical information systems as flood maps.
