Aviation safety can be jeopardized by multiple hazards arising from natural phenomena, e.g., severe weather, Aerosols/gases from natural hazard, space weather, and, though not directly affecting thes afety of aviation but the planet, the climatic impact of aviation. The overall objective of ALARM (multi-hAzard monitoring and earLy wARning systeM) is to develop a prototype global multi-hazard monitoring and Early Warning System for all these hazards.