SUMMIT COUNTY — If it feels like the weather has been stuck in a rut, that may not be too far from the truth. The jet stream is slowing down and meandering farther north and south, with more blocking patterns setting up across the northern hemisphere.
Francis has been studying the connection between vanishing Arctic sea ice and weather in the mid-latitudes of the northern hemisphere, and evidence is piling up that the intense warming at high latitudes has serious implications for North America, Europe and Asia. Continue reading “Climate: The jet stream blues”→
Research team studies role of forage fish in sequestering carbon
By Summit Voice
SUMMIT COUNTY — A still-popular first-grade book described the heroic efforts of a small fish to make a big splash. Now, it turns out that Arty’s dream wasn’t all that farfetched.
According to a new study by scientists with Rutgers University and the Virginia Institute of Marine Science, forage fish like anchovies can play an important role as a biological pump in the cycle that moves carbon dioxide from the atmosphere into the depths of the ocean, where its sequestered without adding to heat-trapping woes of atmospheric greenhouse gases.
SUMMIT COUNTY — Using data from sensitive satellite instruments, researchers at the University of Saskatchewan have determined relatively small volcanic eruptions can affect climate on a global level, as aerosols from the eruptions are transported into the upper levels of the atmosphere by weather systems like monsoons.
“If an aerosol is in the lower atmosphere, it’s affected by the weather and it precipitates back down right away,” said Adam Bourass, with university of Saskatchewan’s Institute of Space and Atmospheric Studies. “Once it reaches the stratosphere, it can persist for years, and with that kind of a sustained lifetime, it can really have a lasting effect,” Bourass said, explaining that the particles scatter incoming sunlight, thus cooling the Earth’s surface. Continue reading “Climate: smaller volcanoes found to affect upper atmosphere”→
Final day of weather conference looks at global climate factors
By Summit Voice
SUMMIT COUNTY —Along with steadily increasing temperatures, climate researchers say that global warming will result in more extreme weather events, including droughts, floods, cold snaps and heat waves.
The mechanisms driving those extremes aren’t completely understood, but one factor could be the so-called Arctic paradox, with warmer air over the polar region displacing colder air to the south.
The first session of the final day at the 2012 Weather and Climate Summit in Breckenridge will explore the link between the warmer Arctic regime and last winter’s severe snowstorms and cold temperatures in mid-latitudes, especially along the U.S. east coast and in Europe.