Tonga Volcano Eruption Reveals Natural Methane Destruction Process
Similar Articles
Submarine Volcanic Eruption Detected in Bismarck Sea North of Papua New Guinea
Magma Surge Under São Jorge Island Stopped Short of Eruption
Greenland Ice Sheet Extreme Melting Accelerates
Agriculture Drives Tropical Peatland Loss, Releasing Significant Greenhouse Gases
Shiveluch Volcano Shows Sustained Activity with Growing Lava Dome
The 2022 Hunga Tonga-Hunga Ha'apai volcanic eruption released a massive plume that also destroyed a significant amount of methane, a potent greenhouse gas. Scientists used satellite data to track a formaldehyde byproduct cloud for 10 days, revealing a chemical reaction triggered by volcanic ash and seawater. This discovery, published in Nature Communications, provides new insight into a natural process that could influence climate models.
Facts First
- The 2022 Hunga Tonga-Hunga Ha'apai eruption released about 300 gigagrams of methane, comparable to annual emissions from over two million cows.
- The volcanic plume also destroyed about 900 megagrams of methane daily, equal to the daily emissions from about two million cows.
- Satellite observations detected high formaldehyde levels, a byproduct of methane breakdown, in the plume tracked for 10 days to South America.
- Research indicates volcanic ash and seawater reacted with sunlight to create reactive chlorine that broke down the methane.
- Methane is responsible for about one third of current global warming and traps roughly 80 times more heat than CO2 over 20 years.
What Happened
In January 2022, the Hunga Tonga-Hunga Ha'apai underwater volcano produced a major eruption. Scientists using satellite observations from the TROPOMI instrument aboard the European Space Agency's (ESA) Sentinel-5P satellite detected high levels of formaldehyde in the resulting volcanic plume. Dr. Maarten van Herpen reported that this formaldehyde cloud was tracked for 10 days, reaching as far as South America. The research indicates that volcanic ash and salty seawater blasted into the stratosphere reacted with sunlight to create reactive chlorine, which then broke down methane.
Why this Matters to You
Understanding natural processes that destroy methane, a gas responsible for about one third of current global warming, could refine climate change predictions. This discovery may help scientists better account for natural variability in atmospheric methane levels, which could influence the accuracy of long-term climate models used to inform policy and adaptation strategies.
What's Next
The research team, which included scientists from multiple international institutions, published its findings in the journal Nature Communications. The study was supported by Spark Climate Solutions. Further research may investigate whether this methane-destruction process occurs during other large volcanic eruptions, potentially revealing a more significant natural climate feedback mechanism than previously understood.