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How does carbon dioxide affect global warming?
Since 1958, a continuous measurement of the carbon dioxide content of the atmosphere has been made at Mauna Loa Observatory in Hawaii. These observations were initiated by Charles Keeling, who died in 2005, and have been maintained by his son Ralph ever since.
Sunshine is a manifestation of solar radiation and when it is absorbed by the surface of the Earth, the surface heats up and emits a different kind of radiation, known as infrared radiation. Carbon dioxide is a special chemical in that it is transparent to solar radiation and yet it absorbs infrared radiation. Thus, the presence of carbon dioxode in our atmosphere allows sunshine to penetrate to the surface but inhibits the emission of infrared radiation to space.
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Are the jet stream and tornadoes related?
Wintertime weather is driven largely by the parade of upper-level weather systems carried rapidly eastward by the high level winds known as the jet stream.
The jet stream is a ribbon of high-speed wind (located at nearly 6 miles above the surface) that is related to the strength, and location, of the pole-to-equator temperature contrast. Continue reading
How long were Madison lakes frozen this year?
Lakes Mendota, Monona and Wingra opened during the second week of April.
Lake Mendota officially froze Dec. 16 and opened April 12, for an ice season of 117 days, which is 12 days longer than the median duration. Continue reading
Who controls the tornado sirens?
The sirens around Dane County are not just for warning about tornadoes.
Although tornado warnings are by far the most common cause for the sounding of the alarm, the sirens are used for other hazards. Continue reading
Category: Meteorology, Severe Weather, Weather Dangers
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How do potholes form?
Potholes result from a combination of traffic and water.
Roadways are constructed in layers. The top layer is water resistant and curved to drain water off the road and onto the shoulder. Continue reading
