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Search AGWunveiled to see volcanic events on graph with measured average global temperatures. Any effect is lost in random scatter except Tambora in 1815 (approximately 10X the next largest) which was followed by 'the year without a summer', 1816.


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The small changes in sunrise and sunset are caused by the tilt of the world, and the changes in light the earth gets causes winter and summer. It's been going on for millions of years, so there's no real harm there. One might also note things like the effect of these on thunderstorms, because the thunderstorms come ultimately from the earth's magnetic ...


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It depends on the eruption, location, magnitude , timing etc. Have a look at the great Krakatoa eruption in 1883. In the year following the eruption, average Northern Hemisphere summer temperatures fell by as much as 1.2 °C (2.2 °F).[9] Weather patterns continued to be chaotic for years, and temperatures did not return to normal until 1888. Note, the ...


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Volcanic eruptions release both stratospheric ash, which reduces insolation at the ground, and carbon dioxide, which has a long-term warming effect. The ash falls out of the atmosphere after a few years, but the extra carbon dioxide is brought from underground into the biological carbon cycle more or less in the same way as the carbon from fossil fuels. My ...


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Clean dry air lets sunlight through; dirty moist air scatters it. Aerosols (small air borne particulate contamination) are more prominent near areas of dense population - due to power plants, cars, fires, ... These particles form nucleation sites for moisture - and these small water drops become very effective scatterers of sunlight. The humidity is high ...



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