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hold an amazingly detailed record of Earth's climate. Each year, snow falling on glacial areas accumulates, piling on top of thousands of years of past snow, compressing the snow into yearly layers of ice, like rings inside a tree trunk. Preserved in the ice are tiny bubbles of Adidas Gazelle Indoor Black Maroon ancient air that tell us the composition of the atmosphere at that time. The amount of dust in the snow tells us how windy the climate was. The thickness of the layer tells how much precipitation fell that year. Most importantly, the amount of the "heavy" isotope of oxygen, 18O, lets us infer the average atmospheric temperature, since water vapor with "heavy" 18O molecules condenses out Adidas Trainers Mens Gazelle Og Black Charcoal

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However, since the early 1990s, a radical shift in the scientific understanding of Earth's climate history has occurred. We now know that that major regional and global climate shifts have occurred in just a few decades or even a single year. The most recent of these shifts occurred just 8200 years ago. If an abrupt climate change of similar magnitude happened today, it would have severe consequences for humans and natural ecosystems. Although scientists consider an abrupt climate change unlikely in the next 100 years, their understanding of the phenomena is still a work in progress, and such a change could be triggered instantly by natural processes or by human caused global warming with little warning. The National Academy of Sciences the board of scientists established by Congress in 1863 to advise the federal government on scientific matters compiled a comprehensive report in 2002 entitled, Abrupt Climate Change: Inevitable Surprises. Most of the material that follows was taken from this report.

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 the case with this cold snap, there is no Greenland block, so the Arctic outbreak, while dangerously cold, will not persist long as the polar vortex returns home to near Baffin Island, Canada after its southern vacation later in the week. The word sounds ominous, but in reality, the process happens fairly frequently in the world of weather. "'Bombogenesis' follows from "cyclogenesis," which refers to the development of a cyclone (which, in turn, is usually synonymous with a low pressure system, or low)," writes senior meteorologist Stu Ostro. "Bombs are so named because of the rapidity with which they develop, which evokes explosiveness, and the power that they usually attain once they have gone through the intensification phase specified in the definition (a central pressure drop of at least 24 millibars in 24 hours). "So what happens when a meteorological "bomb" strengthens?Wind speeds increase and precipitation can become more intense, often creating heavy snowfall and potential blizzard conditions during winter storms. This happened in February Adidas Originals Gazelle 2 Trainers

of clouds more readily at cold tempe.

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2014, when Winter Storm Quintus dropped 31 millibars within a span of 24 hours. An example of a tropical cyclone undergoing bombogenesis is Hurricane Charley in 2004. We generally consider climate changes as taking place on the scale of hundreds or even thousands of years.

Adidas Gazelle Indoor Black Maroon

Adidas Gazelle Indoor Black Maroon

Adidas Gazelle Indoor Black Maroon

Adidas Gazelle Indoor Black Maroon

Adidas Gazelle Indoor Black Maroon

Adidas Gazelle Indoor Black Maroon

Adidas Gazelle Indoor Black Maroon

Adidas Gazelle Indoor Black Maroon

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