According to the Intergovernmental Panel on Climate Change (IPCC) report released on Monday, global warming of 1.5 °C will result in unavoidable multiple climate hazards over the next two decades, and even temporarily exceeding this warming level will result in additional, severe impacts, some of which will be irreversible.
The study, which was supposed to come out in September but was postponed due to the pandemic, expands on earlier IPCC assessments by raising the likelihood of a slew of climate-related calamities.
“This report is a stark warning about the dangers of inactivity,” stated IPCC Chair Hoesung Lee. “It demonstrates that climate change poses a serious and growing threat to our well-being and the health of the planet.” “How people adapt and nature reacts to increased climate risks will be shaped by our decisions today.”
Beyond natural climatic variability, human-induced climate change, especially more frequent and severe extreme events, has had broad negative consequences and is linked to losses and damage to the environment and humans. Vulnerability has been lessened as a result of certain development and adaptation measures. The most vulnerable individuals and systems have been seen to be disproportionately impacted across industries and locations. According to an accompanying statement by IPCC authors, including scientists from India, the increase in weather and climate extremes has resulted in some irreversible repercussions as natural and human systems are pushed beyond their capacity to adapt.
While there has been progress in adaptation planning and execution across all sectors and areas, resulting in many benefits, it has been unevenly distributed, with adaption gaps identified. They pointed out that many projects prioritise urgent and near-term climate risk reduction, limiting the chance for transformative adaptation.
Prime Minister Narendra Modi said during the COP26 summit in Glasgow last year that India would reach net zero emissions by 2070, indicating there would be no net carbon emissions. India has also committed to sourcing 50% of its energy from renewable sources by 2030. India intends to reduce carbon emissions by a billion tonnes by 2030, with an emissions intensity per unit of GDP of less than 45 percent lower.He also said that India will build 500 Gigawatts of renewable energy by 2030, an increase of 50 Gigawatts over its current plans.
According to one of several studies cited in Monday’s IPCC report, Lucknow and Patna are among the cities predicted to reach wet-bulb temperatures (a metric of humidity) of 35°C if emissions continue to rise, while Bhubaneswar, Chennai, Mumbai, Indore, and Ahmedabad are all identified as at risk of reaching wet-bulb temperatures of 32-34°C if emissions continue to rise; overall, Assam, Meghalaya, Tripura, West Bengal, Bihar, Jharkhand, Odisha, Chhattisgarh, Uttar Pradesh, Haryana, and Punjab will be the most severely affected, but if emissions continue to increase, all Indian States will have regions that experience wet-bulb temperatures of 30°C or more by the end of the century.
If governments meet their existing emission-cutting targets, global sea levels would likely increase by 44–76 cm this century. The rise might be kept to 28-55 cm if emissions are reduced more quickly. However, if emissions grow faster than projected and ice sheets melt faster than expected, sea levels may rise by as much as 2 metres this century and 5 metres by 2150.
By 2050, it is estimated that we will have reached 1.5 degrees Celsius. Because of its delicate ecosystem, even the smallest shift in climate will have a long-term influence on the Himalayan area. Incidents like the Chamoli disaster and extreme weather events like heavy precipitation, which we saw in Himachal and Uttarakhand this year, will become more common, “said Anjal Prakash, Research Director of ISB’s Bharti Institute of Public Policy and lead author of the chapter on cities, settlements, and key infrastructure, as well as the cross-chapter paper on mountains.”
“I’m concerned about three things in the new IPCC report. We can now say with certainty that the escalating climate catastrophe is causing an increase in water-related ailments. Second, we are certain that climate change will have a significant influence on food production and security. Droughts and heatwaves, on the other hand, will result in biodiversity loss as well as human migration. “Developing nations like India would need to considerably scale up their adaptive ability to handle this surge of crises,” said Arunabha Ghosh, CEO of the Council on Energy, Environment, and Water (CEEW), a think tank.
Source: The Hindu