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!
Synthetic Aperture Radar (SAR) data has become increasingly available, but many potential users are deterred by the pre-processing required to generate an analysis-ready dataset. SAR amplitude datasets often require Radiometric Terrain Correction (RTC) to adjust for the distortions inherent to SAR data. NASA's Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) provides access to a range of SAR datasets, but until recently most of the products available through ASF DAAC’s Data Search – Vertex portal required additional processing before they could be integrated into GIS or scientific workflows. ASF DAAC now offers on-demand processing of Sentinel-1 datasets within the Vertex user interface, allowing users to submit GRD or SLC products for RTC processing. These on-demand products are generally available for download within 30 minutes of the request. This webinar will introduce users to RTC datasets, and demonstrate the process of using Vertex to search for source granules, submit them for processing, and access the finished products.
Course Format
The online training will take place on February 24 from 2:00 pm - 3:00 pm EST.
Course Details
The presenter of the course will be Heidi Kristenson, GIS Specialist at ASF DAAC.
