Volcanoes Cool The Tropics, But Global Warming May Have Helped Override Some Recent Eruptions

http://www.sciencedaily.com/releases/2009/01/090105175356.htm

ScienceDaily (Jan. 9, 2009) — Climate researchers have shown that big volcanic eruptions over the past 450 years have temporarily cooled weather in the tropics—but suggest that such effects may have been masked in the 20th century by rising global temperatures. Their paper, which shows that higher latitudes can be even more sensitive to volcanism, appears in the current issue of Nature Geoscience.