Thursday, May 31, 2007
NASA - Research Finds That Earth's Climate is Approaching 'Dangerous' Point
Research Finds That Earth's Climate is Approaching 'Dangerous' Point 05.30.07
NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth’s climate close to critical tipping points, with potentially dangerous consequences for the planet.
Antarctica lost much more ice to the sea than it gained from snowfall according to a NASA survey done between 1992 and 2002. It also had a corresponding rise in sea level. The survey documented for the first time extensive thinning of the West Antarctic ice shelves. Credit: NASA/SVS
Friday, May 04, 2007
EO News: Widespread 'Twilight Zone' Detected Around Clouds - May 3, 2007
There seems to be something new under the sun -- in the sky, specifically -- that could complicate scientists' efforts to get a fix on how much the world will warm in the future. Greenhouse gases are not the only things in the air that influence the temperature of our atmosphere. Clouds and small airborne particles called aerosols also play an important and complicated role. And now a new ingredient has been discovered: an extensive and previously unseen “twilight zone” of particles that represents a gradual transition from cloud droplets to dry particles.