Northern hemisphere snow cover above average in December and January
By Summit Voice
FRISCO — Arctic sea ice remained well below average during January, about 400,000 miles below the 1979 to 2000 average for the month and the sixth-lowest during the satellite record. The last ten years (2004 to 2013) have seen the ten lowest January extents in the satellite record.
Arctic sea ice starting melting quickly in late April
By Summit Voice
SUMMIT COUNTY — After staying near average levels during much of April, the Arctic sea ice extent started a rapid decline late in the month, marked by the meltdown of freshly formed thin ice that can’t persist from year to year.
The linear rate of decline for April ice extent over the satellite record is 2.6 percent per decade.
SUMMIT COUNTY — Arctic sea ice extent grew at a faster than average rate, and spiked in late February, but despite spreading farther than normal on the Pacific side of the Arctic, the overall extent was lower than average. Thick multi-year ice continues to melt quickly, according to NASA researchers.
Overall, the Arctic gained 369,000 square miles of ice during the month. This was 188,000 square miles more than the average ice growth for February 1979 to 2000.
“The spring bloom provides a major source of food for zooplankton, fish and bottom-dwelling animals,” said Mati Kahru, lead author of the study and a research oceanographer in the Integrative Oceanography Division at Scripps. “The advancement of the bloom time may have consequences for the Arctic ecosystem.” Continue reading “Arctic sea ice changes affecting plankton blooms”→