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!
UN-SPIDER Online Training on Flood Mapping Using Sentinel-1 SAR Imagery and Google Earth Engine
UN-SPIDER
Staff from the National Emergency Management Agency (NEMA) and the National Space Research and Development Agency (NASRDA).
In order to strengthen the capacity of the National Emergency Management Agency of Nigeria 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. The three two-hour sessions were attended by staff at the National Emergency Management Agency and the National Space Research and Development Agency.
The training aimed overall at highlighting the importance and usefulness of remote sensing and satellite data as a decision-making tool in risk and disaster management. In particular, it intended to strengthen the understanding of the characteristics of synthetic aperture radar (SAR) imagery and its use for flood mapping in order to support emergency response efforts in Nigeria, which had seen extensive floods in different parts of the country in the preceeding months.
