Researchers establish longest regional climate record using sediment cores from an Arctic Lake that’s been undisturbed for 3.6 million years
By Summit Voice
FRISCO — Sediment cores from a crater lake in Siberia are helping scientists understand how varying concentrations of atmospheric carbon dioxide affect the Arctic climate.
The sediment cores help establish the longest continuous climate record from the region, showing that the Arctic was a very warm place during a period about 3.5 to 2 million years ago, when CO2 levels were similar to today’s.
The research leads to the conclusion that even small fluctuations in CO2 can result in big changes in the Arctic, according to Julie Brigham-Grette, of the University of Massachusetts Amherst.
SUMMIT COUNTY — On the heels of a major study showing potential global warming impacts to the ski industry, another team of climate scientists is offering additional research signalling bad news for skiers in the Northeast.
The high-resolution climate study suggests temperatures are going to be significantly warmer in all seasons in the next 30 years, especially in winter. Also, they project that winters will be wetter, with more rain likely than snow.
Satellite images help pinpoint land-cover and fire patterns
By Summit Voice
FRISCO — Along with global warming, new research suggests that invasive cheatgrass is a significant factor in the proliferation of more intense fires in the intermountain West, and specifically in the Great Basin.
“Although this result has been suspected by managers for decades, this study is the first to document recent cheatgrass-driven fire regimes at a regional scale, the scientists wrote, describing the study that relied partly on satellite images captured between 2000 and 2009 to create a detailed land-cover map of the Great Basin. Continue reading “Cheatgrass implicated in Great Basin fire regime”→