Saturday, November 1, 2025

The atmospheric blast wave associated with the Hunga Tonga-Hunga Ha'apai volcano eruption.

The Hunga Tonga-Hunga Ha'apai volcano erupted on January 15, 2022. A blast wave from the eruption went around the globe. Each GONG station is equipped with a very sensitive barometer, which record barometric pressure every minute. A pulse in the atmospheric pressure associated with this wave was recorded by each station. Figure shows daily variations of the barometric pressure on 15 January 2022 at the GONG station at Big Bear Lake, California, USA. Red oval marks the passage of the blast wave. Records of the barometric pressure and temperature for all GONG network and engineering stations for 14-17 January 2022 are now available at DOI: 10.5281/zenodo.17493218

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