Global warming is "for ever"
''The climatic impacts of releasing fossil-fuel carbon dioxide into the atmosphere will last longer than Stonehenge, longer than time capsules, far longer than the age of human civilisation so far''.
In a paper to be published in the Annual Review of Earth and Planetary Sciences, he says, ''The ocean is getting fed up with absorbing our CO2.'' Surface waters which used to sop up the gas quite fast, are getting saturated with it turning acid in the process and, so, decreasing their uptake. They need to be replaced with fresh water from deep down, but this circulation ''takes centuries or a millennium''.
Global warming is expected to slow this down: the hotter the surface layer becomes, the longer the replenishment takes.
The paper says research shows this renewing process will not be enough to remove the vast amounts of carbon dioxide. Much will have to wait hundreds of thousands of years before being removed by another, much slower, process: the natural weathering of rocks, which incorporates the gas into other substances.
- That would be the global warming that hasn't happened since 2001, right?
- If the science is so settled, why is this all such a surprise?
Read it here.