1.5°C Threshold

2024: 1.5C Warming Limit Breached—Greed, Inaction, and a Looming Climate Catastrophe

2024 marks the first year to exceed the symbolic 1.5°C global warming threshold above pre-industrial levels, according to Copernicus Climate Service data, making it the hottest year on record. This surpasses the previous record set in 2023 by over 0.1°C, highlighting a concerning trend of escalating global temperatures. While this does not represent a breach of the long-term 1.5°C target agreed upon in Paris, it brings the world significantly closer to that critical threshold. The increased warming is primarily attributed to human emissions of greenhouse gases, exacerbated by natural weather patterns like El Niño, underscoring the urgent need for emission reductions.

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Earth Has Warmed 1.5°C Since 1700: Humans Are to Blame

Using ice core data from Antarctica, researchers have established a new pre-industrial baseline for global warming, dating back to the period before 1700. This new method reveals that humanity has already caused 1.49°C of warming by 2023, meaning the 1.5°C threshold, a critical benchmark in climate change discussions, has effectively been reached. This updated baseline offers a more accurate measure of human-induced warming, reducing uncertainty compared to the commonly used 1850-1900 reference point. The researchers believe this new approach will provide a more robust and scientifically defensible basis for evaluating progress towards climate goals.

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