In the past 10 years, the value of satellite derived maps for emergency response has been proven, and large programmes have been developed to create services able to respond to the stringent requirements of crisis management. These programmes include the International Charter, the European Copernicus Emergency Management Service, and the UN's Operational Satellite Applications Programme (UNOSAT), along several national and private services. These services produce many maps in the aftermath of sudden onset disasters.
In response to GDACS stakeholder workshops, it became clear that users are confused by the amount of maps and do not have the time to critically select the map that best suits their needs. As a result, satellite maps are not used at their full potential. Therefore, a working group was set up, lead by UNOSAT, to define mechanisms to moderate lists of available maps in order to create a short list, continuously updated, with the most complete, most recent and most relevant maps for emergency operations.