But a new study by NOAA scientists, published in the Journal of Climate, says it’s too early to tell if the last two winters were the product of a warming Arctic. There are potential links, the study found, but more research is needed.
“We are in the pre-consensus stage of a theory that there are links between the rapid warming of the Arctic and some severe weather events since 2007,” NOAA’s James Overland, the study’s lead author, said in a statement.
Cold snaps like the ones that hit the eastern United States in the past winters are not a consequence of climate change. Scientists at ETH Zurich and the California Institute of Technology have shown that global warming actually tends to reduce temperature variability.'