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Observing & Predicting
- Department:March 23, 2017
Compared to their smooth appearance at other times of year, the lines tracking Arctic and Antarctic sea ice extent become wiggly. Why is that?
- March 22, 2017
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.
- Department:March 22, 2017
Hot and dry conditions across the Southern Plains proved perfect for the spread of large wildfires across the prairie in March.
- Department:March 20, 2017
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.
- March 16, 2017
Near-record warmth across the U.S. this past winter raised the odds for a warmer than average spring. Even so, several places received plenty of snow, which raised the risk of flooding in the Northern Rockies, the Northern Plains, and New England.
- February 17, 2017
The Arctic sea ice's typical winter expansion has been sluggish in 2016-17. Following a record-low January extent, this year's winter maximum may wind up being the smallest on record.