A new global climate forecast is raising serious concerns among scientists. The El Niño phenomenon, combined with continued warming caused by greenhouse gas emissions, could push the global average temperature to unprecedented levels in 2027.
According to an analysis by climatologist Zick Hausfather published in The Washington Post, there is about a 95 percent chance that 2027 will break the record for the warmest year ever recorded.
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According to projections, the global average temperature could reach around 1.76 degrees Celsius above pre-industrial levels.
Hausfather has described El Niño as a kind of climate “time machine,” as its impact could bring temperatures that, in a scenario without the phenomenon, would not be expected until many years later.
At the heart of this development is the Pacific Ocean. During El Niño, vast amounts of heat accumulated in the ocean shift eastward, affecting the atmosphere and distributing heat across different parts of the globe.
Water temperatures in the equatorial Pacific have reached exceptionally high levels, heightening concerns about the phenomenon’s impact on the global climate.
Experts warn that other factors could also intensify the warming. A reduction in atmospheric aerosols, which have until now reflected some solar radiation and had a cooling effect, could contribute to rising temperatures.
However, El Niño’s impact is expected to be largely temporary. Forecasts suggest that 2028 could be cooler.
But this does not alter the long-term trend: continued greenhouse gas emissions are permanently increasing the amount of heat in the climate system.
A warmer atmosphere can also hold more water vapor. According to the physical principle known as the Clausius-Clapeyron relation, the air’s capacity to hold water vapor increases by around 7 percent for every 1 degree Celsius of warming, increasing the potential for extreme rainfall.
Europe Faces Extreme Temperatures
Meanwhile, Europe is experiencing a series of heat waves that are putting the continent’s infrastructure, healthcare systems and economies to the test.
In the United Kingdom, temperatures have exceeded 38 degrees Celsius, while France has recorded similar temperatures, including around 38 degrees Celsius in Paris.
The high temperatures have increased pressure on hospitals and public services, while measures have been introduced in some areas to cope with the heat and drought.
In France, extreme temperatures have also affected agriculture. Some winegrowers have been forced to bring forward the harvest to protect their produce from heat-related damage.
The economic cost of successive heat waves, droughts and wildfires is growing steadily. Beyond temperature records, scientists warn that the most significant impacts of climate change will be felt in public health, food security, water supplies and the economy.
If the forecasts prove accurate, 2027 could provide further evidence of the speed at which Earth’s climate is changing.
