Global emissions can be halved by 2030 through major energy transitions: IPCC report

Global emissions can be halved by 2030 with major transitions in the energy sector, including a substantial reduction in the use of fossil fuels, said an IPCC report released on Monday, stressing that measures mitigation must be taken now to limit global warming to 1.5 degrees Celsius.

The Intergovernmental Panel on Climate Change (IPCC) Working Group III report “Climate Change 2022: Mitigation of Climate Change”, which has been published worldwide, stated that in 2010-2019 , average annual greenhouse gas emissions worldwide were at their highest levels in humans. the story.

“Limiting global warming will require major transitions in the energy sector. This will involve a substantial reduction in the use of fossil fuels, widespread electrification, improved energy efficiency and the use of alternative fuels (such as hydrogen ),” the report said. Without immediate deep reductions in emissions across all sectors, limiting global warming to 1.5 degrees Celsius is out of reach. However, there is growing evidence for climate action, scientists said in the latest report.

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“We are at a crossroads. The decisions we make now can ensure a livable future. We have the tools and the know-how to limit warming,” said IPCC Chairman Hoesung Lee. “I am encouraged by the climate action being taken in many countries. There are policies, regulations and market instruments that are proving effective. If scaled up and applied more broadly and equitably, they can support reductions emissions and drive innovation,” Lee mentioned.

Joyashree Roy, one of the report’s coordinating authors, said an important takeaway from the report is that the next few years will be crucial as countries decide on mitigation actions. “Unless mitigation measures are taken, the 1.5 degree limit cannot be reached. We must intensify our actions without delay. The report indicates that there are ways to improve our chances of success in limiting global warming to 1.5 degrees Celsius,” Roy said.

Navroz K Dubash, another co-author of the report, said the focus should be on doing as much as possible in the short term. “What can be done in this decade is very important. We need to look at the next 10 years first and not just the goals for 2050,” he said.

The report was endorsed by 195 IPCC member governments in a virtual endorsement session that began on March 21. This is the third installment of the IPCC’s Sixth Assessment Report (AR6), which will be completed this year. “Putting the right policies, infrastructure and technologies in place to enable changes in our lifestyles and behaviors can lead to a 40-70% reduction in greenhouse gas emissions by 2050. This offers significant untapped potential,” said the Co-Chair of IPCC Working Group III. Priyadarshi Shukla.

“Evidence also shows that these lifestyle changes can improve our health and well-being,” Shukla said. According to the report, reducing emissions in industry will involve using materials more efficiently, reusing and recycling products, and reducing waste. For basic materials, including steel, building materials and chemicals, low-to-zero greenhouse gas production processes are at pilot to near-commercial stages, he said.

“This sector accounts for around a quarter of global emissions. Reaching net zero will be difficult and will require new production processes, low- and zero-emission electricity, hydrogen and, if necessary, the capture and storage of hydrogen. Agriculture, forestry, and other land use can provide large-scale emission reductions and also remove and store carbon dioxide on a large scale.However, land cannot compensate for delayed emission reductions in d “other sectors. Response options can benefit biodiversity, help us adapt to climate change and secure livelihoods, food, water and wood supplies,” he said.

The report warned that limiting warming to around 1.5 degrees Celsius requires global greenhouse gas emissions to peak by 2025 at the latest and to be reduced by 43% by 2030, and at the same time , methane should also be reduced by about a third. . “Even if we do this, it is almost inevitable that we will temporarily exceed this temperature threshold, but may return below it by the end of the century,” the report said.


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