This course will deal with the data dissemination system called EUMETCast, or globally referred to as GEONETCast. This low cost data dissemination system allows free near real time satellite data reception from a range of satellites and associated products from various data providers. The focus of this course will be on system setup for African users. The course will elaborate on the system requirements like parabolic antenna, LNB and DVB-S2 configuration / antenna pointing, service registration, different types of data received and the necessary data management. An introduction will be provided on the visualization of a number of satellite images from geostationary satellites (like MSG) and polar orbiting satellites (like METOP) as well as a range of land and atmosphere products. Use is made of free and open tools for image import and processing.
The figure below shows the Water and Food Security Ethiopia toolbox and an MSG visualization of METEOSAT-8, positioned at 41.5 degree East, together with the multi sensor precipitation estimate product (MPEG).
Geographic Information System (GIS) assists to govern spatial and non-spatial information in a systematic way. Well organized data and information assists in preferred territorial planning and decision-making process. In GIS, data about real-world objects are drawn quickly and can be shown using the different attribute fields stored in GIS databases. The sources for spatial data can be from different sources including field observation/measurement, GPS-based data collection, remote sensing, and software-based derivations like map digitization. Nowadays, satellite-based data acquisition is providing continuous image products for almost all areas of the world at different spatial resolutions.
Remote sensing is a valuable data source to obtain information about the surface of the earth. The applications of remotely sensed data are extremely broad, and it is increasing exponentially due to recent improvements in data resolution and availability. Several platforms have been historically used to consolidate data, starting from kites to balloons, airplanes, satellites, and very recently, drones.
Drought is a natural hazard that results from lower levels of precipitation than what is considered normal. When this phenomenon extends over a season or a longer period of time, precipitation is insufficient to meet the demands of human activities and the environment. Monitoring this phenomenon is has paramount importance.
Flood hazard assessment can be conducted in different ways depending on the availability of data. The method of carrying out the assessment depends on the information, technology, and resources accessible.
Disaster risk management, as a process, can be seen from different points of view; some of these include processes from the hazard, disaster governance, and disaster cycle points of view.\\\\
- Teacher: Ashenafi Kassahun