Daily Archives: July 10, 2008

Why do we care about aerosols?

Posted on July 10, 2008 by

Aerosols tend to cause cooling of the Earth’s surface immediately below them. Because most aerosols reflect sunlight back into space, they have a “direct” cooling effect by reducing the amount of solar radiation that reaches the surface. The magnitude of … Continue reading →

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Phoenix Mars Lander Digging in “Snow White” trench

Posted on July 10, 2008 by

This image was acquired by NASA’s Phoenix Mars Lander’s Surface Stereo Imager on the 44th Martian day of the mission, or Sol 43 (July 7, 2008), after the May 25, 2008, landing, showing the current sample scraping area in the … Continue reading →

Posted in News, Solar System | Leave a comment

Volcanoes and Global Cooling

Posted on July 10, 2008 by

Volcanic eruptions are thought to be responsible for the global cooling that has been observed for a few years after a major eruption. The amount and global extent of the cooling depend on the force of the eruption and, possibly, … Continue reading →

Posted in climate change, Environment, Volcanoes | 1 Comment