EarthCARE Satellite Tracks Anak Krakatau Ash, Boosting Aviation Safety

The European Space Agency’s EarthCARE satellite has obtained high‑resolution images of the ash cloud emitted by Indonesia’s Anak Krakatau, giving aviation regulators timely information to lessen hazards for aircraft flying over the area.

Named “Child of Krakatoa,” the volcano resurfaced from the sea in the early 1900s, occupying the crater left by its parent’s devastating 1883 eruption. Since that time it has erupted on and off, releasing ash, steam and volcanic gases that can foul jet engines and reduce visibility.

Equipped with lidar and radar, EarthCARE can profile clouds and aerosols with fine vertical detail. By measuring the plume’s thickness, particle load and height, the satellite creates a three‑dimensional view that ground‑based stations cannot provide, especially across the remote oceanic region surrounding the volcano.

Air‑traffic controllers across Southeast Asia have started feeding the satellite’s observations into their flight‑planning tools. When the ash reaches typical cruise levels—about 30,000 to 40,000 feet—pilots are diverted around the contaminated air, lowering the risk of engine ingestion or sensor fouling that could endanger a flight.

Specialists point out that conventional ash warnings depend on local observatory reports and occasional aircraft sightings, whereas EarthCARE delivers near‑real‑time data in any weather. This is particularly useful during the rainy season, when clouds can hide ash from visual detection.

Looking forward, the ESA intends to provide the processed plume information to the International Civil Aviation Organization, working toward a unified global alert framework. As Anak Krakatau remains active, the synergy of space‑based monitoring and flight safety is poised to become a core component of volcanic hazard management worldwide.