Critical Satellite Impairs Australian Bushfire Detection

A crucial satellite in Northern Australia's bushfire warning system is experiencing significant operational failures, leading to potential detection blind spots lasting up to 12 hours daily. The Northern Australian Fire Information (NAFI) service, which rural land managers in Queensland, Northern Territory, South Australia, and Western Australia rely on, utilizes a network of eight international satellites, including the failing unit.

The Deteriorating Terra Satellite

The satellite, known as Terra, was launched by NASA in December 1999 and is now 25 years old. Peter Jacklyn, NAFI service manager, has stated that the satellite is "dying" due to power depletion. This issue is severely affecting the reliability of its data collection instruments, particularly its ability to detect "hot spots."

Significant Operational Impacts

The reduced detection capability means the system is now more likely to miss fires, especially in the mornings. Detection gaps of 10 to 12 hours can occur, meaning fires detected before dawn might not be picked up again until the afternoon.

Queensland grazier Cameron Tickell reported that the system failed to detect several large grassfires during the summer, including one on a neighbor's property that grew significantly before being discovered.

Tickell emphasized the critical need for a reliable early detection system, noting the decreased presence of people for traditional "bush telegraph" communication.

Replacement Efforts and Lingering Challenges

While the European Space Agency has launched a new satellite intended to replace Terra, its crucial hot spot data may not become active for Australian use until mid-year. This delay is attributed to the time required to develop a specific algorithm in Australia to interpret the new satellite's images for active fire detection.

NASA confirmed that Terra is still producing scientific data but was moved to a lower orbit in 2022 to conserve fuel, with "power-based limitations" impacting some sensors. Additionally, the funding for the Northern Australian Fire Information (NAFI) website is nearing its end.