Siberian Heatwave - & - NOAA's Arctic Report

Posted on Thursday, November 23 at 09:15 by bracewell
Signs of Warming Continue in the Arctic ...AP
......Signs of warming continue in the Arctic with a decline in sea ice, an increase in shrubs growing on the tundra and rising concerns about the Greenland ice sheet.
......The new "State of the Arctic" analysis, by the NOAA, also reports an increase in northward movement of warmer water through the Bering Strait in 2001-2004. This may have contributed to a continuing reduction of sea ice.
......During that time, there were record lows in sea ice coverage in the region, Overland said. The report said Arctic sea ice coverage this past March was the lowest in winter since measurements by satellite began in the early 1970s.
......Jacqueline A. Richter-Menge of the Cold Regions Research and Engineering Laboratory in Hanover, N.H., said the sea ice decline is now being observed in both winter and summer.
......There have been many changes over the Arctic land areas and include changes in vegetation, river discharge into the Arctic Ocean, glaciers and permafrost.
......The tundra is becoming greener with the growth of more shrubs - causing problems in some areas as herds of reindeer migrate.
......At the same time, there is some decrease in the greening of the northern forest areas, probably due to drought.
......There has been a significant warming of the permafrost over the past 30 years. Much of the damage to the permafrost soil can be blamed on human construction activities and fires, he said. In many areas, this frozen ground is close to the melting point and soon could begin to thaw.
......Those in the middle levels of the ocean, such as pollock, seem to do well; those on the surface ice or the sea floor, such as walrus or crabs, are not coping as well.
......Most of the heating from the sun comes to the equator and subequatorial regions, and a lot of heat leaves by radiation from Arctic, he said. "The temperature difference between the Arctic and equator drives all of our weather. If the Arctic warms up and that difference is reduced, weather could change, though people remain unsure about the effect.
......Peer-reviewed State of the Arctic Report (42 pgs) covering data from 2000-2005, with a first look at winter 2006. This provides an update to some of the data records of physical processes discussed in the Arctic Climate Impact Assessment (ACIA 2004, 2005 ).


'I don't think Canadians want us to sell out important Canadian values. They don't want us to sell out to the almighty dollar.'
- Cdn PM - Harper

World Has Under a Decade to Act on Climate Crisis
JAMES HANSEN: The world has less than a decade to take decisive action in the battle to beat global warming or risk irreversible change that will tip the planet towards catastrophe.

Note: - James Hansen Siberian heatwave brin... Signs of Warming Cont... State of the Arctic Re... ACIA 2004, 2005 - Cdn PM - Harper World Has Under a Deca...

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