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- In the nearest future we may witness global cooling in spite of increasing concentration of greenhouse gases in the atmosphere.
That can happen, if the following hypothesis is correct:
Not the growth of greenhouse gases concentration provokes temperature to rise, but vice versa...
- Studies conducted at the research station Vostok revealed that for the last 100 thousand years an increase in temperature always preceded the growth of greenhouse gases concentration, but not inversely. When temperature began to decrease, the concentration of gases continued to grow for a period of 2-3 thousand years...
- The growth of gases concentration is faster than that of temperature and soon outruns the latter.
With a turn from warming to the next phase of cooling, the concentration of greenhouse gases inertially grows for a while.
Then their concentration begins to decrease, which soon gets faster than the temperature decrease.
This tendency progresses until glaciation phase that closes each climatic cycle. - This trend is observable only within large time intervals such as hundreds of thousands of years. If a short time interval of about 20 thousand years is considered, then one can conclude that the growth of temperature follows the growth of greenhouse gases concentration and not contrariwise...
Volcanoes cool climate through bacteria, researchers say
Scientists already knew that a major volcanic eruption can cool the Earth for a couple of years, because the particles and chemicals thrown into the air make clouds that reflect sunlight back out into space.
But Vincent Gauci, a geophysicist from the Open University, Milton Keynes, UK, says that the sulphur dioxide in volcanic plumes also affects the climate indirectly.
Falling in acid rain, these fumes can feed sulphur-loving bacteria in wetlands, allowing them to out-compete methane-generating bacteria, and so reducing the amount of methane emitted into the atmosphere.
About half the world's methane - a greenhouse gas stronger than carbon dioxide - comes from bacteria in peat bogs and rice paddy fields...
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