Researchers found that these existing systems often have limited reach and are susceptible to disruption during catastrophic events. The study also points out that warning information relayed through these systems is frequently unclear, distorted, or delayed, hampering timely evacuations.

The vulnerability of these communities to various natural disasters was considered in the study. Researchers noted that Bangladesh often faces tropical cyclones, Bhutan experiences Glacial Lake Outburst Floods (GLOFs), and Mongolia endures dzuds, or harsh winter conditions. The study evaluated the efficacy of current early warning systems and proposed the use of the Quasi-Zenith Satellite System - Early Warning System (QZSS-EWS) to augment these systems.

The researchers employed three case studies to illuminate the pressing need for enhancing the current warning mechanisms in these geographically challenging regions. In Bangladesh, the Cyclone Preparedness Programme (CPP) could pave the way for QZSS-EWS implementation. In Bhutan, it might be integrated into the GLOF early warning system and subsequently update its standard operating procedures (SOP) to accommodate QZSS-EWS. In Mongolia, the new system could be employed in conjunction with Dzud Risk Maps.

The use of a satellite-based system such as the QZSS-EWS, which remains operational even when ground-based networks are overloaded or damaged, may offer clearer, direct alerts to those in danger. This could enhance evacuation processes, possibly sparing lives and livelihoods.

The research team cautioned that the introduction of this technology alone may not be sufficient. They remarked, "QZSS could significantly improve the effectiveness of disaster early warning systems, but it is also crucial that policymakers undertake subsequent policy and practical actions to upgrade these systems based on lessons from past experiences and future challenges."

The study also emphasized the need for updating SOPs, conducting regular performance evaluations, and refining necessary tools and equipment. Critical, too, is the necessity for community capacity building, including regular evacuation drills and training on new technology usage, such as QZSS receivers.

The findings of this research emphasize the need for a comprehensive and inclusive strategy that does not overlook at-risk communities. While the introduction of QZSS and related technologies marks a significant step forward, it needs to be complemented by dedicated policy action and practical measures on the ground for successful evacuation processes.

Research Report:Addressing early warning challenges using satellites to improve emergency evacuation

Related Links
Nanjing Tech University
Bringing Order To A World Of Disasters
A world of storm and tempest
When the Earth Quakes