by Linnea Lueken at Watts Up With That
A recent article in Axios claims that the current rate of global ice sheet melting and sea level rise will rapidly accelerate unless global warming is stopped before it reaches 1.5°C. Axios also claims that even if greenhouse gas emissions are reduced, sea levels will rise for centuries because of the “delayed response” of ice sheets in Greenland and Antarctica. Axios’ claims are misleading at best. Warming, sea level rise, and ice melt is likely to continue regardless of human-caused greenhouse gas emissions, as it has been going on for far longer than human emissions have been a factor. There is no evidence that any out-of-control “tipping point” exists or is being approached, nor any evidence rates of sea level rise are increasing. Ice mass naturally grows and shrinks in the north and south poles.
The article, “Drastic emissions cuts needed to avert multi-century sea level rise, study finds,” discusses a new study that comes to some old, unoriginal conclusions. Mainly, that unless humans stop emitting greenhouse gasses like carbon dioxide and methane rapidly in order to keep warming to 1.5°C or less (the earth has already warmed 1.2°C) rapid ice melt and rising seas will occur.
Writer Andrew Freedman cites a study published in Nature Communications, to support his story. Describing the study’s methodology, Freedman writes it “utilizes multiple simulations from what are known as “coupled” computer models in which the interactions between the atmosphere, ocean, ice sheets and ice shelves are included and capable of influencing one another over time.”
As is typical, these alarming predictions are based not on observable data, but on computer model projections that have a bias towards human-caused warming. Climate Realism has discussed the problems with climate modelling dozens of times, including here, here, and here, for instance.
In reality, scientists’ understanding of how the atmosphere and clouds,…
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