The temporary reduction in carbon emissions caused by global COVID-19 lockdowns did not slow the relentless advance of climate change.
Greenhouse gas concentrations are at record levels, and the planet is on path towards dangerous overheating, a multi-agency climate report published on Thursday (Sept 16) warns.
“We have reached a tipping point on the need for climate action. The disruption to our climate and our planet is already worse than we thought, and it is moving faster than predicted”, UN Secretary General António Guterres underscored in a video message. “This report shows just how far off course we are”, he added.
According to scientists, the rising global temperatures are already fueling devastating extreme weather events around the world, with escalating impacts on economies and societies. For example, billions of working hours have been lost due to excessive heat, reads the report.
“We now have five times the number of recorded weather disasters than we had in 1970 and they are seven times more costly. Even the most developed countries have become vulnerable”, said the UN chief.
“These events would have been impossible without human-caused climate change. Costly fires, floods and extreme weather events are increasing everywhere. These changes are just the beginning of worse to come”, he warned.
The report echoes some of the data and warnings from experts in the last year: the average global temperature for the past five years was among the highest on record, and there is an increasing likelihood that temperatures will temporarily breach the threshold of 1.5° Celsius above the pre-industrial era, in the next five years.
The picture painted by United in Science is bleak: even with ambitious action to slow greenhouse gas emissions, sea levels will continue to rise and threaten low-lying islands and coastal populations throughout the world.
“We really are out of time. We must act now to prevent further irreversible damage. COP26 this November must mark that turning point. By then we need all countries to commit to achieve net zero emissions by the middle of this century and to present clear, credible long-term strategies to get there”, urged the UN chief.
The 2021 United Nations Climate Change Conference, also known as COP26, is scheduled to be held in the city of Glasgow, Scotland between 31 October and 12 November 2021. The pivotal meeting is expected to set the course of climate action for the next decade.
“We must urgently secure a breakthrough on adaptation and resilience, so that vulnerable communities can manage these growing (climate) risks…I expect all these issues to be addressed and resolved at COP26. Our future is at stake”, Guterres emphasized.
“Throughout the pandemic we have heard that we must “build back better” to set humanity on a more sustainable path, and to avoid the worst impacts of climate change on society and economies. This report shows that so far in 2021, we are not going in the right direction”, added Prof. Petteri Talas, World Meteorological Organization’s secretary general.
The report also cites the conclusions of the most recent IPCC report: the scale of recent changes across the climate system are unprecedented over many centuries to many thousands of years, and it is unequivocal that human influence has warmed the atmosphere, ocean and land.
Meanwhile, the UN Environment Program (UNEP), warns that five years after the adoption of the Paris Agreement, the emissions gap (the difference between where emissions are heading and where science indicate they should be in 2030) is as large as ever.
Although the increasing number of countries committing to net-zero emission goals is encouraging, to remain feasible and credible, these goals urgently need to be reflected in near-term policy and in significantly more ambitious actions, the agency highlights.
Global sea levels rose 20 cm from 1900 to 2018, and at an accelerated rate from 2006 to 2018. Even if emissions are reduced to limit warming to well below 2 °C, the global average sea level would likely rise by 0.3–0.6 m by 2100 and could rise 0.3–3.1 m by 2300.
Adaptation to the rise will be essential, especially along low-lying coasts, small islands, deltas and coastal cities, explains WMO.
The World Health Organization (WHO) warns that rising temperatures are linked to increased heat-related mortality and work impairment, with an excess of 103 billion potential work hours lost globally in 2019 compared with those lost in 2000.
Moreover, COVID-19 infections and climate hazards such as heatwaves, wildfires and poor air quality, combine to threaten human health worldwide, putting vulnerable populations at particular risk.
According to the UN health agency, the COVID-19 recovery efforts should be aligned with national climate change and air quality strategies to reduce risks from cascading climate hazards, and gain health co-benefits.