The Earth’s climate is warming. There is no doubt about it. But what still seems difficult to pinpoint is the actual rate at which this warming is occurring. Or even more so, the speed at which warming takes effect. And researchers today report a phenomenon that seems to indicate that our planet is reacting faster to climate change than they thought.
Researchers around the world are watching the evolution of the . They compile all sorts of phenomena , chemical and biological to try to predict as accurately as possible changes in the context of anthropogenic global warming. And today, surprise, des (Israel) reveal that in theles intensified.
Surprise? Yes, because the they foresaw it. But rather by the end of this century. However, the results published by the researchers show that the intensification of – in the southern hemisphere, but not yet in the – in recent decades it has already reached the level that scientists envisioned it would reach … in 2080!
“A winter storm is a meteorological phenomenon that lasts only a few days.” Individually, not every storm has a lot of climate weight. ”Rei Chemke, a researcher, recalls in a . But the cumulative effect of these storms, on the other hand, is significant. They affect the transfer of humidity and in the atmosphere. What to touch the different climatic zones of the . Without the winter storms that carry heat from the tropics to the poles, the would be about 30 ° C lower than they are, for example.
Climate models to be corrected
The work of researchers at the Weizmann Institute of Science confirms that – just like the – This phenomenon of rapid intensification of winter storms in the southern hemisphere over the past 20 years cannot be explained by internal fluctuations in the Earth’s climate system. Human activity is the main culprit.
Why haven’t climate models seen anything coming? “Changes in temperature, rainfall, sea ice and summer storms, for example, are all accurately simulated by modelsexplains Rei Chemke. But we have discovered there, a parameter for which the sensitivity of the models must be adjusted ”. Because this intensification of the storms is the result of changes in the . And that current climate models are not able to predict the detail of these changes. A bias that should now be corrected, however. To give more accurate projections for the future.
In the meantime, this work directly warns that human activities could have a greater impact than researchers in the southern hemisphere in particular thought. They give a clearer picture of the damage that climate change is expected to cause to the region. And call for immediate and swift action to combat global warming and adaptation.