The relationship between Arctic whales and sea ice is still largely a mystery, but there is increasing concern over how these species will adapt to climate related changes in sea ice. In a new study, researchers found the drastic sea ice changes under way in the Arctic could lead to more predation of beluga whales — and that could have “implications for population viability, ecosystem structure and the subsistence cultures that rely on them,” said Dr. Greg O’Corry-Crowe, a scientist with Florida Atlantic University. Continue reading “How do Arctic sea ice changes affect whales?”→
Cool and stormy weather in the Arctic during July slowed the rate of sea ice loss to just below average for the month, making it less likely sea ice extent will dwindle to a record low, according to the latest update from the National Ice and Snow Data Center. But it all depends on conditions the next few months.
For the month, sea ice extent averaged 2.14 million square miles, the third-lowest for July since satellite records started in 1979. It was only the second month of 2016 that didn’t end with a record-low extent, according to the NSIDC. The sea ice extent in July was 73,000 square miles above the previous record low 637,000 square miles below the 1981 to 2010 long-term average. Through 2016, the rate of decline for the month of July is 28,070 square miles per year, about 7.3 percent per decade. Continue reading “Climate: Arctic sea ice melt slows slightly in July”→
New study measures permafrost changes with impacts to carbon cycle
Global warming is limiting the growth of seasonal ice on Arctic lakes, which could have implications for the global carbon cycle. new study accepted for publication in Geophysical Research Letters, permafrost beneath shallow Arctic lakes is starting to thaw — another sign of the widespread Arctic meltdown due to climate change.
The changes stem from warmer winter temperatures and increased snowfall during the past 30 years. Lakebed temperatures of Arctic lakes less than 1 meter (3 feet) deep have warmed by 2.4 degrees Celsius (4.3 degrees Fahrenheit) during the past three decades, and during five of the last seven years, the mean annual lakebed temperature has been above freezing, the study found. Continue reading “Climate: Thawing Arctic lakes could boost greenhouse gases”→
The planet’s global warming streak continued in May, which marked the 13th month in a row that the average temperature over land and sea surfaces reached a new monthly record. According to the National Oceanic and Atmospheric Administration, it’s the longest such streak since record-keeping started in 1880.
After a winter that saw average temperatures across most of the Arctic hover between 4 to 11 degrees Fahrenheit above average, sea ice in the region peaked at a record low extent for the second year in a row.
“I’ve never seen such a warm, crazy winter in the Arctic,” National Snow and Ice Data Center director Mark Serreze said in a press release that also explained how this year’s maximum sea ice extent came much later than average. See the full NSIDC report here.
‘We urge you to … protect the Arctic Ocean from the dangers of fossil fuel extraction’
Any plans to drill or or explore for fossil fuel resources are morally unacceptable and scientifically unsupportable, a group of female Nobel Prize winners wrote this week in a letter to the Arctic Council.
The letter, signed by members of the Nobel Women’s Initiative (Mairead Maguire, Jody Williams, Shirin Ebadi and Tawakkol Karman), highlights the urgency of taking meaningful action on climate change and leaving fossil fuels in the ground. It also calls attention to the serious risks that drilling in such a remote and sensitive region poses to Indigenous communities, wildlife, and the environment. Continue reading “Nobel Laureates urge ban on Arctic fossil fuel exploration”→