Warmer Arctic Winters Linked to East Coast Winter Storms
Politicians can stop using cold winter weather as an excuse to deny global warming. A study published Tuesday in Nature Communications links warmer Arctic temperatures to colder, snowier winters in the eastern U.S.
The research, conducted by scientists at Atmospheric and Environmental Research and Rutgers University-New Brunswick, concluded that extreme winters are two-to-four times more likely to occur on the East Coast when the Arctic is warmer than average.
Arctic temperatures are also linked to colder winters in northern Europe and Asia, the study found. On the other hand, the western U.S. tends to see colder winters when the Arctic is also unusually cold.
The results indicate that the winter of 2017-2018, which was the warmest on record for the Arctic but brought England its coldest March 1 since 1785 and gifted New England with three storms in two weeks, was not an anomaly, but rather part of a larger trend.
The study based its findings on data from 1950 to 2016, but paid special attention to "the era of Arctic amplification," which began around 1990. Arctic amplification (AA) is the name given to the observation that the Arctic is warming two-to-three times faster than the rest of the world. Studies had predicted that AA would lead to warmer winters and lighter snow falls, but that has not been the case.
The study acknowledges that its findings only prove correlation, not causation. However, the correlation increased when the metrics used to assess Arctic warming led the metrics used to assess winter severity by five days. This suggests that if there is a casual relationship, the Arctic is driving weather events further south, and not the other way around.
In a University of Rutgers press release, study co-author and Rutgers marine-and-coastal-science professor Jennifer Francis explained how that might happen. "Warm temperatures in the Arctic cause the jet stream to take these wild swings, and when it swings farther south, that causes cold air to reach farther south," she said.
But James Screen, an associate professor of climate science at the University of Exeter, questioned that hypothesis in The Verge. Screen pointed out that climate models do not show a warmer Arctic driving colder winters. "Either the models are wrong, which is possible, or the interpretation of the observed correlation is wrong," he told The Verge.
Even if the warmer Arctic temperatures are not driving winter storms like Riley and Quinn, that doesn't mean climate change itself is not to blame. Warming ocean temperatures "produce stronger nor'easters like we've seen this season, with larger snowfall totals," Michael Mann, director of the Earth System Science Center at Pennsylvania State University, told The Verge in an email.
Scientists Stunned by Off-the-Charts Arctic Temperatures, Record-Low Sea Ice https://t.co/Lg9zswF96j @greenpeaceusa @SierraClub @NOAA @NASA— EcoWatch (@EcoWatch)1519668470.0
By Robin Scher
Beyond the questions surrounding the availability, effectiveness and safety of a vaccine, the COVID-19 pandemic has led us to question where our food is coming from and whether we will have enough.
- Can Urban Farms Prevent Hunger in 54 Million People in the U.S. ... ›
- New Report Finds Malnutrition World's Top Killer Amid Pandemic ... ›
- Oxfam Warns 12,000 Could Die Per Day From Hunger Due to ... ›
- Three Ways to Support a Healthy Food System During the COVID ... ›
- Trump USDA Resumes Effort to Cut Food Stamp Benefits - EcoWatch ›
- Pandemic Threatens Food Security for Many College Students ... ›
EcoWatch Daily Newsletter
Tearing through the crowded streets of Philadelphia, an electric car and a gas-powered car sought to win a heated race. One that mimicked how cars are actually used. The cars had to stop at stoplights, wait for pedestrians to cross the street, and swerve in and out of the hundreds of horse-drawn buggies. That's right, horse-drawn buggies. Because this race took place in 1908. It wanted to settle once and for all which car was the superior urban vehicle. Although the gas-powered car was more powerful, the electric car was more versatile. As the cars passed over the finish line, the defeat was stunning. The 1908 Studebaker electric car won by 10 minutes. If in 1908, the electric car was clearly the better form of transportation, why don't we drive them now? Today, I'm going to answer that question by diving into the history of electric cars and what I discovered may surprise you.
As bitcoin's fortunes and prominence rise, so do concerns about its environmental impact.
- 15 Top Conservation Issues of 2021 Include Big Threats, Potential ... ›
- How Blockchain Could Boost Clean Energy - EcoWatch ›
By David Drake and Jeffrey York
The Research Brief is a short take about interesting academic work.
The Big Idea
People often point to plunging natural gas prices as the reason U.S. coal-fired power plants have been shutting down at a faster pace in recent years. However, new research shows two other forces had a much larger effect: federal regulation and a well-funded activist campaign that launched in 2011 with the goal of ending coal power.
- Major Milestone: More than 100,000 MW Worth of Coal-Fired Power ... ›
- Coal Will Not Bring Appalachia Back to Life, But Tech and ... ›
- Renewables Beat Coal in the U.S. for the First Time This April ... ›