Azara Blog: Atmosphere becoming more humid

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Date published: 2007/10/10

The BBC says:

The atmosphere is becoming more humid in a pattern consistent with man-made climate change, researchers have found.

Their study, reported in the journal Nature, confirms the global increase in humidity found in previous studies.

They say that the pattern of humidity increases in various parts of the world resembles that projected by computer models of man-made global warming.

Water vapour is a greenhouse gas, and it is thought that having more of it in the air could amplify temperature rise.

The major report released earlier this year by the Intergovernmental Panel on Climate Change (IPCC) said that this amplification was the largest "positive feedback" mechanism they had identified.

Previous research has shown that humidity increases in Europe, a response to higher temperatures, were amplifying the temperature rise by about a factor of two.

Nothing unexpected here.

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