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World May Reach 1.5°C (2.7°F) of Warming in the Next Two Decades: IPCC Climate Science Report

Dr. Lakshmi Unnithan
Dr. Lakshmi Unnithan
Forest Fire
Forest fire

The Intergovernmental Panel on Climate Change (IPCC) unveiled a New Report that showcased that the world may reach 1.5°C (2.7°F) of warming within just the next two decades. It reports temperature rise and emissions that are driving extreme weather and much more. The excerpts from the IPCC reports states that Global surface temperature will still increase until a minimum of the mid-century under all emissions scenarios considered.

Global warming of 1.5°C and 2°C will exceed during the 21st century unless deep reductions in CO2 (CO2) and other greenhouse emission emissions occur within the coming decades. Many changes within the climate system become larger in direct reference to increasing heating. These climate changes include frequency and intensity of hot extremes, marine heatwaves, and heavy precipitation, agricultural and ecological droughts in some regions, and proportion of intense tropical cyclones, and reductions in Arctic sea ice, snow cover and permafrost. 

The World water cycle, global monsoon precipitation and the severity of wet and dry events etc will be intensified by continuous heating. Under scenarios with increasing CO2 emissions, the ocean and land carbon sinks are projected to be less effective at slowing the buildup of CO2 within the atmosphere.  

WRI’s Helen Mountford says that if we take urgent and decisive action we can avoid  a calamitous future and there is a need to generate much-needed jobs and low-carbon, economic growth . But to make these quick and decisive actions, we would need rapid, radical shifts in the ways we make energy, produce food and manage land. 

Reports also state that From a physical science perspective, limiting human-induced global warming to a specific level requires limiting cumulative CO2 emissions, reaching at least net zero CO2 emissions, along with strong reductions in other greenhouse gas emissions. Strong, rapid and sustained reductions in CH4 emissions would also limit the warming effect resulting from declining aerosol pollution and would improve air quality.  

This year we saw record breaking wild fires, floods, high temperatures, landslides and what not. Generally when these kinds of things happen it’s the low income countries that bear the wrath and fall into deeper poverty. It is recommended that the wealthy nations urgently need to deliver on their $100 billion annual commitment to help developing countries meet their climate-related needs and expand their climate finance commitments at COP26.

This target will also need to be expanded by up to 5 times to meet growing climate-related needs — ideally before 2030, the target year for many countries national climate plans. Countries need to aggressively funnel the money at this year’s COP26 gathering in Glasgow in November and countries will start negotiations for a post-2025 collective finance goal.  

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