Larger particles of ash have little effect because they fall out of the air quickly. Volcanic ash or dust released into the atmosphere during an eruption shade sunlight and cause temporary cooling. Because of atmospheric circulation patterns, eruptions in the tropics can have an effect on the climate in both hemispheres while eruptions at mid or high latitudes only have impact the hemisphere they are within.īelow is an overview of materials that make their way from volcanic eruptions into the atmosphere: particles of dust and ash, sulfur dioxide, and greenhouse gases like water vapor and carbon dioxide. Three days later, the volcano exploded in the second-largest volcanic eruption on Earth in the 20th century.Įven though volcanoes are in specific places on Earth, their effects can be more widely distributed as gases, dust, and ash get into the atmosphere. ![]() Volcanoes have also caused global warming over millions of years during times in Earth’s history when extreme amounts of volcanism occurred, releasing greenhouse gases into the atmosphere.Ī huge cloud of volcanic ash and gas rises above Mount Pinatubo, Philippines, on June 12, 1991. The cooling effect can last for months to years depending on the characteristics of the eruption. Most of the particles spewed from volcanoes cool the planet by shading incoming solar radiation. The gases and dust particles thrown into the atmosphere during volcanic eruptions have influences on climate. But eruptions also impact the atmosphere. ![]() Volcanic eruptions are responsible for releasing molten rock, or lava, from deep within the Earth, forming new rock on the Earth’s surface.
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