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Category Archives: Meteorology
Is carbon dioxide a major contributor to global warming?
The Earth’s atmosphere is a mixture of many different gases. Several of these gases are known as “greenhouse gases” because they share the characteristic of being excellent absorbers of infra-red radiation.
Such gases absorb radiation emitted by the Earth that would otherwise escape to space and cool the planet. Upon being absorbed, these gases re-emit a fraction of that energy back downward to the surface, keeping the planet warmer than it would otherwise be. In fact, our Earth would have an average temperature of about zero without these greenhouse gases. Continue reading
Category: Climate, Meteorology
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How did this winter compare to others?
Now that the traditional winter season (December, January, February) is over, we can consider how this season stacked up against the preceding 69 winters in terms of its hemispheric intensity. One way to measure this intensity is to consider the … Continue reading
Category: Meteorology, Seasons, Uncategorized
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How is the ice cover on the Great Lakes?
National Oceanic and Atmospheric Administration (NOAA) monitors and reports on the ice coverage of the Great Lakes. The average concentration of ice on Lake Superior is currently 5.7 percent, compared to 4.6 percent last year and 55.5 percent in 2015. … Continue reading
Category: Climate, Meteorology, Phenomena, Seasons
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How good are the groundhog predictions?
For well over 100 years, the emergence of the groundhog in early February has stirred the imaginations of shivering, winter-stressed humans across the United States. Of course, no reasonable person harbors the expectation a rodent could best a human … Continue reading
What was Madison’s coldest day?
Today is the 66th anniversary of the coldest day in Madison’s history.
On Jan. 30, 1951, the temperature in the city reached a morning low of minus 37 degrees. That is far below any temperature we have experienced in the city in the last 25 or more years. Continue reading
