The Mauna Loa Observatory in Hawaii, which has recorded atmospheric CO2 levels for over 65 years, faces an uncertain future as the U.S. plans to shut down its support facility in Hilo. Scientists warn this move could severely disrupt the world's longest continuous climate record, essential for understanding global warming.

Key Points:

• Mauna Loa Observatory is home to the Keeling Curve, the longest-running direct measurement of atmospheric CO2 levels since 1958.
• The U.S. government plans to close NOAA’s Hilo facility, which supports Mauna Loa’s sample processing and logistics, by August 31, 2025.
• This closure would disrupt the continuity of CO2 data that serves as a global benchmark for tracking climate change.
• Scientists and environmental groups warn that losing this data would be like "breaking a thermometer to avoid knowing you have a fever."
• Alternatives like Cape Grim in Australia exist, but none carry the long-term legacy and baseline significance of Mauna Loa’s record.