Yep. Nailed it.
Hunga Tonga-Hunga Ha'apai, an underwater volcano near Tonga, erupted on Jan. 14, 2022, releasing 50 million tons of water vapor into the Earth's atmosphere, along with ash and volcanic gases. This massive vapor injection increased the amount of moisture in the global stratosphere by about 5% and could trigger a cycle of stratospheric cooling and surface heating, which may persist for months to come.
