Links to our climate and international news reporting …
By Bob Berwyn
Not as much content as usual on Summit Voice this week, but that’s because we were busy reporting elsewhere, with a few noteworthy stories. For example, Austria is holding a presidential election tomorrow (Sunday, Dec. 4) and the election of Donald Trump became an issue in the last few weeks of the campaign. I co-reported a story on the election with the European bureau chief of the Christian Science Monitor, including an interview with an American expat involved in the campaign.
Study says ratio of record-hot to record-cold temperatures set to soar
A global warmup of another few degrees means that the ratio of daily record-high temperatures to record lows will steadily increase, reaching as high as 15 to one, according to scientists with the National Center for Atmospheric Research. The ratio could go even higher if the pace of emissions increases and produces even more warming.
Over the last decade, in contrast, the ratio of record high temperatures to record lows has averaged about two to one. If temperatures were not warming, the ratio of record highs to record lows would average out to about one to one.
Instead, record high temperatures have already become a common occurrence in much of the country. The ratio of record highs to lows has averaged about 2 to 1 over the first decade of the 21st century, but there is considerable year-to-year variation. The ratio was about 5 to 1 in 2012, dropping to about 1 to 1 in 2013 and 2014, then almost 3 to 1 in 2015. Continue reading “More heat records, fewer cold days ahead”→
The relationship between Arctic whales and sea ice is still largely a mystery, but there is increasing concern over how these species will adapt to climate related changes in sea ice. In a new study, researchers found the drastic sea ice changes under way in the Arctic could lead to more predation of beluga whales — and that could have “implications for population viability, ecosystem structure and the subsistence cultures that rely on them,” said Dr. Greg O’Corry-Crowe, a scientist with Florida Atlantic University. Continue reading “How do Arctic sea ice changes affect whales?”→
Latest survey tallies more than 100 milion dead trees
California’s long-term drought has claimed another 36 million trees, the U.S. Forest Service said this week, announcing the results of a new aerial survey. Since 2010, more than 100 million trees have died across 7.7 million acres, the agency said.
The die-off intensified in 2016, after four years of drought, with mortality increasing 100 percent. Millions of additional trees are weakened and expected to die in the coming months and years. Forest Service leaders once again emphasized that their ability to address safety issues linked with dead trees has been severely hampered by climate change and limited resources.
Conservation groups challenge planned fossil fuel leases on public lands in Colorado
Conservation groups are challenging the Bureau of Land Management’s plans to auction fossil fuel leases on 20,000 acres of public land in Colorado based on concerns about air and water pollution, and potential harm to imperiled species — including threatened Colorado River fish such as the Colorado pikeminnow and razorback sucker, and plant species such as the parachute beardtongue.