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Global Warming Exceeds 1.5 Degrees Celsius: What Now?
Confirmed
In Short: Global temperatures surpassed 1.5 degrees Celsius above pre-industrial levels in August, according to Copernicus data, highlighting the urgency of climate action.
Global temperatures exceeded 1.5 degrees Celsius above pre-industrial levels in August, according to Copernicus data, marking a significant milestone in the ongoing climate crisis. This threshold, set as a 'defence line' to avoid irreversible climate impacts, has been breached, underscoring the need for immediate and robust action.
Scientists are increasingly concerned about the loss of cooling effects from sulphur pollution, which has been partly counteracting the warming caused by carbon dioxide. This phenomenon, exacerbated by Britain's record-breaking hot summer, is raising questions about the effectiveness of current mitigation strategies.
The Indian Express reports that the 1.5-degree Celsius limit, established in the 2015 Paris Agreement, is now at risk. The report notes that breaching this threshold could lead to high risks for some regions and vulnerable ecosystems over an extended period. The loss of cooling from sulphur pollution is contributing to the acceleration of global warming.
In April 2024, the US National Oceanic and Atmospheric Administration (NOAA) reported that the fourth global mass coral bleaching event was triggered by extraordinarily high ocean temperatures. Additionally, a 2023 report found that five major climate tipping points are already at risk of being crossed due to warming, further emphasizing the critical state of the planet's climate.
What's confirmed
- Global temperatures exceeded 1.5 degrees Celsius above pre-industrial levels in August, according to Copernicus data, marking a significant milestone in the ongoing climate crisis. This threshold, set as a 'defence line' to avoid irreversible climate impacts, has been breached, underscoring the need for immediate and robust action.
- Scientists are increasingly concerned about the loss of cooling effects from sulphur pollution, which has been partly counteracting the warming caused by carbon dioxide. This phenomenon, exacerbated by Britain's record-breaking hot summer, is raising questions about the effectiveness of current mitigation strategies.
- The Indian Express reports that the 1.5-degree Celsius limit, established in the 2015 Paris Agreement, is now at risk. The report notes that breaching this threshold could lead to high risks for some regions and vulnerable ecosystems over an extended period. The loss of cooling from sulphur pollution is contributing to the acceleration of global warming.
- In April 2024, the US National Oceanic and Atmospheric Administration (NOAA) reported that the fourth global mass coral bleaching event was triggered by extraordinarily high ocean temperatures. Additionally, a 2023 report found that five major climate tipping points are already at risk of being crossed due to warming, further emphasizing the critical state of the planet's climate.
What's still developing
- How cleaning up the air is speeding up global warming - and revealing a bigger problem This July, during Britain's record-breaking hot summer, a curious row broke out on X over climate science.
- But less well-known is sulphur pollution, which forms vast numbers of tiny particles in the air and reflects sunlight back into space, partly counteracting the warming effect of carbon.
- "[El Niño] is a natural pattern that's occurring in an unnaturally warming world," said Gershunov, the UC San Diego researcher.
- “We are at a point where there are no plausible scientific pathways left that keep temperatures below 1.5 degree Celsius,” the report said. 4.
- The 2015 Paris Agreement, signed by 193 countries and the EU, established 2°C as the upper limit while identifying 1.5°C as the more desirable goal, because the risks of extreme heat, drought, water stress and other climate impacts are substantially lower at 1.5°C than at 2°C. 11.
- It is set as a “defence line”, to ensure that the world avoids the disastrous and irreversible adverse effects of climate change which would begin to unfold once the average temperature increases by 2 degree Celsius above the pre-industrial levels. 3.
- Here’s your UPSC Current Affairs knowledge nugget for today on UN’s ‘Limiting Overshoot’ report.