By Jon Queally
“This is, by far, the biggest political issue in the world. It is the one thing that will affect everyone on the planet for centuries to come. Why isn’t everyone shouting it from the rooftops?”
Warning of a possible domino effect as multiple climate feedback loops are triggered within a dynamic cascade of rising temperatures and warming oceans, scientists behind a frightening new study say that for the sake of humanity’s future they hope scenarios explored in their new models do not come to pass.
“This study effectively suggests the human race could become extinct this century and it’s not even the top story on the fucking Guardian.”
“I do hope we are wrong, but as scientists we have a responsibility to explore whether this is real,” Johan Rockström, executive director of the Stockholm Resilience Centre, where the research was done, told the Guardian. “We need to know now. It’s so urgent. This is one of the most existential questions in science.”
Published in the Proceedings of the National Academy of Sciences, the new study, while not conclusive in its findings, warns that humanity may be just 1°C away from creating a series of dynamic feedback loops that could push the world into a climate scenario not seen since the dawn of the Helocene Period, nearly 12,000 years ago.
The research, according to its abstract, explores “the risk that self-reinforcing feedbacks could push the Earth System toward a planetary threshold that, if crossed, could prevent stabilization of the climate at intermediate temperature rises and cause continued warming on a ‘Hothouse Earth’ pathway even as human emissions are reduced. Crossing the threshold would lead to a much higher global average temperature than any interglacial in the past 1.2 million years and to sea levels significantly higher than at any time in the Holocene.”
As Rockström explains, the “tipping elements” examined in the research “can potentially act like a row of dominoes. Once one is pushed over, it pushes Earth towards another.” And in an interview with the BBC, he added, “What we are saying is that when we reach 2 degrees of warming, we may be at a point where we hand over the control mechanism to Planet Earth herself. We are the ones in control right now, but once we go past 2 degrees, we see that the Earth system tips over from being a friend to a foe. We totally hand over our fate to an Earth system that starts rolling out of equilibrium.”
Such feedback occurences, the authors of the study write, would pose “severe risks for health, economies, political stability, and ultimately, the habitability of the planet for humans.”