Posted by: r.m. | October 19, 2010

CC: changing winds and ecosystems

(1) Why winds are slowing: Afforestation and climate change are blamed for stilling surface winds in the Northern Hemisphere.

Excerpt: Annual wind speeds had declined at 73% of the stations, dropping by 5–15% over almost all of the land areas examined. The most pronounced effect was seen across Eurasia. The researchers also found that stronger winds have been affected more than weak ones. Brian Golding, director of forecasting research at the UK Met Office in Exeter, Devon, says that the observation is interesting. “However,” he adds, “the timescales are very short for a meteorological trend — it’s entirely possible that the previous 30 years would show a different trend.”

(2) Big changes predicted in Alaska climate by 2100

More than half the ecosystems in Alaska will look much different by the end of the century, according to a new study at the University of Alaska Fairbanks. Changes in climate could alter the habitat of many species of plants and animals, skewing their range and population across Alaska.


Responses

  1. It seems that, nowadays, we are witnessing global warming more than global cooling. Now, If wind speeds higher in the air are also slowing down, that could affect the spread of atmospheric pollutants or even the dispersal of windblown seeds. So, is this a good or a bad thing?


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