Last week, NOAA issued a La Niña watch, indicating conditions are favorable for the development of La Niña this winter. What does a La Niña winter typically mean for the U.S.?
Unusual weather conditions in 2017—including a blizzard caused by the remnants of 2016's Hurricane Nicole and a short surface melt season—are behind preliminary estimates of a small gain in ice mass on the Greenland Ice Sheet this year.
