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Monthly Archives: April 2015
Do volcanic eruptions impact climate and weather?
There are some spectacular photographs and videos of the recent eruption of Calbuco in Chile. The impact of the eruption on our weather and climate depends on how explosive the eruption and how much sulfur dioxide is in the volcanic plume.
Eruptions can lead to cooler temperatures in the mountain’s vicinity. As the ash cloud enshrouds nearby regions, it will reduce the amount of solar energy reaching the surface and thereby reduce the daytime temperatures. Continue reading
Category: Climate, Phenomena, Weather Dangers
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Why does the wind adversely affect over-the-air television transmission?
Why does the wind adversely affect over-the-air television transmission? Continue reading
Category: Phenomena, Severe Weather
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Why are there April showers?
As we head into the second half of April, recent weather has reminded us all of the old saying, “April showers bring May flowers.” The question, of course, is why does April bring the showers? First of all, is it … Continue reading
What is permafrost?
Permafrost is ground that is frozen for at least two years. It remains frozen all year and contains plant material that has not yet completely decomposed.
Permafrost is mostly located in polar regions, though it also occurs in some high mountain tops where it is called alpine permafrost. There is no permafrost in Madison, though our ground does freeze in most winters. Continue reading
