The National Oceanic and Atmospheric Administration has released its annual Arctic Report Card, and nearly all of the data points to a warming North, with increasing plant life above the Arctic circle, less sea ice and snow, and an increased likelihood of fire and permafrost melt.
Some of that is old news by now, like the record-low levels of sea ice the Arctic reached this September. But other aspects haven't been as well-publicized, like the massive algae bloom observed in Arctic waters recently, presumably due to thinning ice allowing more light through and causing the phytoplankton to flourish.
NOAA notes the sea ice melt delivered a new record low of polar ice before freezing resumed but also notes an unexplained anomaly seen over the last few years: record levels of sea ice in Alaska's Bering Sea.
Royal Dutch Shell, hoping to resume offshore oil drilling in the Arctic waters of Alaska this year, encountered the stubborn Bering Sea ice first hand. It delayed the arrival of necessary equipment to the north to the Beaufort Sea and Chukchi Sea. According to Kathleen Cole at the sea-ice desk with the National Weather Service, the last decade has seen more ice in the Bering Sea than usual. But 2011 was especially unusual.
"Seven of the last 10 winters have been extreme in the Bering," Cole said, "meaning that we saw more ice than what we would normally expect. Last year, we saw ice at extents that we, in our records, have never seen before, that fishermen out there had never seen before, that Natives out there had never seen before."
But while the attention is focused on the melting sea ice and ice sheets in the Arctic -- and to a lesser extent the record growth of ice on the opposite side of the world in Antarctica -- very little attention has been paid to the Bering Sea's stubborn ice. And that means an explanation for the sea ice surge in western and northwest Alaska hasn't been forthcoming.
"Most of the people that are looking at ice in a research vein right now are looking at how little ice there is in the summer rather than the maximums that we've had in the winter," Cole said.
The National Snow and Ice Data Center, in a report released Tuesday, did note the Bering Sea anomaly early in its summary:
"Extent remained below normal in the Baffin Bay and Hudson Bay, but ice extent in the Bering Sea by the end of the month was greater than average, continuing a pattern seen in recent years," the report said.
Regardless of the activity in the Bering Sea, the rest of NOAA's report card paints an increasingly warm portrait of a more temperate Arctic. Among the other highlights:
This is just the tip of the iceberg for NOAA's Arctic Report Card: View the comprehensive summaries and lots more data.
Contact Ben Anderson at ben(at)alaskadispatch.com