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Earth

Submission + - Aerosols Responsible for Global Artic Warming (nasa.gov)

hofmny writes: "NASA is reporting that Green House gases may not be the primary culprit warming the Arctic areas of Earth, but rather, Aerosols. The most significant melting is now proposed to come from these short lived particles rather than carbon based emissions.

"The regions of Earth that showed the strongest responses to aerosols in the model are the same regions that have witnessed the greatest real-world temperature increases since 1976. The Arctic region has seen its surface air temperatures increase by 1.5 C (2.7 F) since the mid-1970s. In the Antarctic, where aerosols play less of a role, the surface air temperature has increased about 0.35 C (0.6 F).

"We will have very little leverage over climate in the next couple of decades if we're just looking at carbon dioxide," Shindell said. "If we want to try to stop the Arctic summer sea ice from melting completely over the next few decades, we're much better off looking at aerosols and ozone.""

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