Reply To: Global warming forecasts: disasters, diseases

Martin W

Even as idiots argue that global warming’s a swindle and a scam, the science gets scarier.

A new global warming study predicts that many current climate zones will vanish entirely by the year 2100, replaced by climates unknown in today’s world.

Global climate models for the next century forecast the complete disappearance of several existing climates currently found in tropical highlands and regions near the poles, while large swaths of the tropics and subtropics may develop new climates unlike anything seen today. Driven by worldwide greenhouse gas emissions, the climate modeling study uses average summer and winter temperatures and precipitation levels to map the differences between climate zones today and in the year 2100 and anticipates large climate changes worldwide.
The most severely affected parts of the world span both heavily populated regions, including the southeastern United States, southeastern Asia and parts of Africa, and known hotspots of biodiversity, such as the Amazonian rainforest and African and South American mountain ranges. The changes predicted by the new study anticipate dramatic ecological shifts, with unknown but probably extensive effects on large segments of the Earth’s population.

“All policy and management strategies are based on current conditions,” Williams says, adding that regions with the largest changes are where these strategies and models are most likely to fail. “How do you make predictions for these areas of the unknown?”

The underlying effect is clear, Williams says, noting, “More carbon dioxide in the air means more risk of entirely new climates or climates disappearing.”

In general, the models show that existing climate zones will shift toward higher latitudes and higher elevations, squeezing out the climates at the extremes — tropical mountaintops and the poles — and leaving room for unfamiliar climes around the equator.

Global warming forecasts creation, loss of climate zones