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A visible image of the Hunga Tonga-Hunga Ha‘apai ash cloud as seen from NOAA's GOES-17 satellite on January 15, 2022.

A volcanic eruption sent enough water vapor into the stratosphere to cause a rapid change in chemistry

The eruption of the Hunga Tonga-Hunga Ha’apai volcano on January 15, 2022, produced the largest underwater explosion ever recorded by modern scientific instruments, blasting an enormous amount of water and volcanic gases higher than any other eruption in the satellite era.

A volcanic eruption sent enough water vapor into the stratosphere to cause a rapid change in chemistry Read More >

Sunset view from underneath an airplane's wing

NOAA researchers fly out over the Pacific to investigate cloud-forming marine sulfur

While the shade offered by clouds on a hot sunny day can be obvious, quantifying the actual climate impact in terms of solar energy remains a challenging task. This is because the volume, thickness, and lifetime of marine clouds can change rapidly, and the processes that govern how and where clouds  form and how gases and aerosols in the air interact with cloud droplets are highly complex. In a marine environment, many of those gases and aerosols in the air come from the ocean itself. 

NOAA researchers fly out over the Pacific to investigate cloud-forming marine sulfur Read More >

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