Digital Number (DN) is the generic term used for pixel values. These values correlate with the energy that is observed and measured at the sensor. Although the DNs are related to the surface ...

The UN-SPIDER Recommended Practice on flood hazard mapping shows how GIS and modelling are used to calculate simulated inundation areas based on land use, soil, elevation, and meteorological data.

A Regional Support Office (RSO) is a regional or national centre of expertise that is set up within an existing entity by a Member State or group of Member States that have put forward an offer to set ...

This database provides descriptions of a large variety of software for the processing and analysis of space-based information. You can search the database by criteria such as software type, data ...

The Ethiopian Space Science and Technology Institute (ESSTI) is an institute established in Ethiopia to lead Space Science and Technology from end to end research in all space applications, space ...

Who are the users of space technology in disaster risk management and disaster response? What is the context of their daily work? What are their needs and challenges? The Risks and Disasters section ...

The step-by-step procedures below are for ENVI version 4.8. (Click here to access step-by-step instructions for Envi 5. Click here to access step-by-step instructions for the free software R Studio.) ...

The aim of this step-by-step procedure is the generation of a flood extent map for the assessment of affected areas. The flood extent is created using a change detection approach on Sentinel-1 (SAR) ...

As a means of emergency response after a flooding event or inland inundation, flood mapping helps to estimate the extent of the flood on a large scale. It is a basis of coordinating appropriate ...

Data provided by: United Nations Office for the Coordination of Humanitarian Affairs (OCHA) ...

This database provides descriptions of a large variety of satellite imagery, elevation models, land use and land cover maps as well as near real-time data products for different hazard types. You can ...

SAR data from Sentinel-1, a SAR mission from ESA, is available free of charge. To download Sentinel-1 data, register at the Copernicus Data Space Ecosystem. Then a search option becomes available ...