Satellite Imaging of Anak Krakatau’s Ash Cloud Enhances Flight Safety

European Space Agency’s EarthCARE satellite has captured detailed imagery of the ash plume from Indonesia’s Anak Krakatau, providing aviation authorities with timely data to mitigate risks to aircraft operating over the region.

The volcano, whose name translates to “Child of Krakatoa,” re‑emerged from the sea in the early 1900s, filling the crater left by the cataclysmic 1883 eruption of its parent mountain. Since then, it has erupted intermittently, spewing ash, steam and volcanic gases that can interfere with jet engines and impair visibility.

EarthCARE’s lidar and radar instruments are designed to profile clouds and aerosols with high vertical resolution. By scanning the plume’s thickness, particle concentration and altitude, the satellite delivers a three‑dimensional picture that ground‑based monitors cannot match, especially in the remote maritime zones where the volcano sits.

Air traffic controllers in Southeast Asia have begun integrating the satellite’s data into their flight‑planning systems. When the plume reaches cruising altitudes—typically between 30,000 and 40,000 feet—pilots are rerouted to avoid the contaminated air mass, reducing the chance of engine ingestion or sensor contamination that could jeopardise a flight.

Experts note that while traditional volcano ash advisories rely on reports from local observatories and occasional aircraft sightings, EarthCARE offers near‑real‑time updates regardless of weather conditions. This capability is especially valuable during the rainy season, when clouds can obscure visual confirmation of ash clouds.

Looking ahead, the European Space Agency plans to share the processed plume data with the International Civil Aviation Organization, aiming for a standardized global alert system. As volcanic activity at Anak Krakatau persists, the partnership between space‑based observation and aviation safety is set to become an integral part of managing airborne hazards in volcanic regions worldwide.