Researchers estimate that limiting the planet's warming to +1,5ºC will not be enough

Approximately 200 million people in poor regions will be exposed to unbearable heat, and approximately 500 million to a rise in water levels, even if the world manages to respect this 1,5ºC increase in the planet's average temperature (in relation to the Revolution Industrial), indicated these experts, in a study published in Nature.

This scenario is currently considered optimistic, as emissions of greenhouse gases remain at record levels.

Global warming has made El Niños and La Niñas more “frequent and extreme”, study shows

Global warming has intensified a climate pattern in the Pacific Ocean since the 1960s that has triggered extreme droughts, floods and heat waves around the world, according to a new study. Scientists say greenhouse gas emissions likely made El Niños and La Niñas more severe.

UN climatologists estimate that current policies are leading the planet to heat up by 2,7ºC by the end of the century.

The average temperature on the planet's surface has already increased by around 1,2ºC since the pre-industrial era, which is already excessive, according to the authors of this study.

Scientists consider that, to prevent millions of people from being exposed to “significant damage (…), the fair limit must be set at 1ºC or less” and the atmospheric concentration of CO2 – currently 420 parts per million (ppm) – should be reduced to 350 ppm.

“We are in the Anthropocene, which puts the stability and resilience of the entire planet at risk,” declared Johan Rockström, lead author of the study, alluding to the new geological era marked by the impact of human beings on the planet.

For the scientist, Humanity has already surpassed six of the nine red lines that affect the planet's health: excess greenhouse gas emissions, accelerated extinction of species, excess nitrogen and phosphorus in the atmosphere (mainly due to fertilizers), deforestation, excessive use of drinking water and the ubiquity of synthetic chemicals.

The study authors belong to the Global Commons Alliance, a coalition of more than 70 research centers.

(With AFP)

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