Compared to their smooth appearance at other times of year, the lines tracking Arctic and Antarctic sea ice extent become wiggly. Why is that?
Now that the 2016-2017 winter is over with, it's time to look back and see what happened. Did our winter outlook do well?
Despite being at opposite points of the annual cycle, the Arctic and Antarctic had something in common in March 2017: record-low sea ice extents.
Hot and dry conditions across the Southern Plains proved perfect for the spread of large wildfires across the prairie in March.
Based on historical climate data from thousands of stations across the United States, these maps show the warmest and coldest daytime high temperatures ever recorded at a given location on March 20—the astronomical first day of spring.