volcanic dust

Volcanic dust consists of fine rock powder ejected from volcanoes that can remain suspended in the atmosphere for extended periods. This dust, along with sulfur aerosols, can lead to a phenomenon known as a "volcanic winter". These aerosols reflect solar radiation, causing global temperatures to cool for several years after a major eruption.12

Historically, significant volcanic eruptions like Mount Tambora in 1815 and Krakatoa in 1883 have been linked to cooler global temperatures and unusual weather patterns, such as the "year without a summer" in 1816. While volcanic ash itself may only affect visibility for months, the sulfur compounds injected into the stratosphere are the primary agents for long-term climate modification. Volcanology, the study of volcanoes, examines these phenomena, including the materials ejected and their impact on Earth's systems.23