Tim Radford, writing for Climate News Network, reports that scientists are mulling Arctic’s slow CO2 loss.
The Arctic permafrost thaws each year, but – to the surprise of scientists from Denmark – in some areas it is not releasing the carbon dioxide it contains nearly as fast as they had expected.
Hydrology is a science dealing with water on the surface of the land, in the soil and underlying rocks, and in the atmosphere. Most people will probably have vague memories of learning about the water cycle in GCSE science classes – here’s what it looks like
Hydrologic water cycle_ from www.clearaswater.com
Researchers at Sheffield University, working with other universities, have studied sudden climate warmings that occurred around 55 million years ago and concluded that they were triggered by the release of carbon that had been stored in Polar region permafrosts.
This research suggests that a similar risk exists today, since rises in the earth’s average temperature could cause Polar permafrosts to thaw and release the carbon that is currently stored in them as decayed, frozen vegetation.