Sentinel Asia

Sentinel Asia is a voluntary initiative led by the Asia-Pacific Regional Space Agency Forum (APRSAF) and was established in 2005 as a collaboration amongst space and disaster management agencies under the APRSAF initiative. It supports disaster management efforts in the Asia-Pacific region through the provision of space-based information and imagery derived from earth observation satellites. A Joint Project Team (JPT) supports the implementation of Sentinel Asia. A step-by-step procedure has been adopted for the implementation of Sentinel Asia since 2006. Step 1 focused on the implementation of the data dissemination system as a pilot project (2006-2007). Step 2 targeted the expansion of the dissemination backbone through new satellite communication systems (2008-2012), and Step 3 comprises the provision of space-based information that covers all phases of the disaster management cycle - enhanced collaboration, as well as capacity building efforts (2013 onwards).

Eligible requestors/End-users

Eligible requestors for Sentinel Asia are Asian Disaster Reduction Centre (ADRC) member organizations and representative organizations of the JPT. Membership of the JPT is open to all APRSAF member countries, disaster prevention organizations, and regional/international organizations prepared to contribute their experience and technical capabilities. They are also encouraged to participate in disaster information sharing activities. 

Conditions for Activation

Upon request, Sentinel Asia is able to provide geo-spatial information derived from earth observation satellites in case of major disasters; in addition to wildfire, flood and glacier lake outburst flood monitoring.

Request/Point of Contact

Eligible requestors can request the activation of the mechanism via email ( [at] or telephone (+81-50-3362-7838).


Currently, Sentinel Asia uses data received from the following satellites: ALOS (JAXA), IRS (ISRO), THEOS (GISTDA), and KOMPSAT (KARI). Sentinel Asia acquires and analyzes the satellite data and discloses the information through the Sentinel Asia website.


Sentinel Asia provides satellite imagery (to the extent permitted by the imagery provider) and value added maps highlighting the affected areas, as well as on-site digital photos of the disaster area. The initiative also shares data on wildfire hotspots and rainfall information derived from satellite data and meteorological satellite information. This information is then made available on the web, or via satellite communication.

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