35,000 Walruses Gathered in Alaska
Some 35,000 walruses gather on shore near Point Lay, Alaska. Pacific walruses looking for places to rest in the absence of sea ice are coming to shore in record numbers on Alaska's northwest coast.
Thousands of walruses are gathered together on one of the last places they have to rest in Alaska — the shore. As the ice they typically rely on for respite between hunts has all but disappeared, the giant animals are clambering to the coast in record numbers.
The National Oceanic and Atmospheric Administration (NOAA) photographed a gathering of 35,000 of the mammals five miles north of Point Lay, an Inupiat Eskimo village 700 miles northwest of Anchorage.
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West Coast warming linked to naturally occurring changes
Naturally occurring changes in winds, not human-caused climate change, are responsible for most of the warming on land and in the sea along the West Coast of North America over the last century, a study has found.
The analysis challenges assumptions that the buildup of greenhouse gases in the atmosphere has been a significant driver of the increase in temperatures observed over many decades in the ocean and along the coastline from Alaska to California.
Changes in ocean circulation as a result of weaker winds were the main cause of about 1 degree Fahrenheit of warming in the northeast Pacific Ocean and nearby coastal land between 1900 and 2012, according to the analysis of ocean and air temperatures over that time.
T
he study, conducted by researchers from the National Oceanic and Atmospheric Administration and the University of Washington, was published Monday by the Proceedings of the National Academy of Sciences.
Natural, wind-driven climate patterns in the Pacific Ocean, such as El Niño and the Pacific Decadal Oscillation, are already known to exert a powerful influence on
sea and land temperatures over years and even decades.
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