Climate Scientists Downplay Worst Doomsday Scenarios

The most extreme climate projections long used in international climate reports are now considered less likely than previously thought. Researchers behind new climate models argue that the development of renewable energy and new climate policies have changed the outlook for the future, but at the same time emphasize that climate change still poses a serious threat.

A large group of international researchers has decided to adjust the future scenarios used in the work for the next report from the Intergovernmental Panel on Climate Change (IPCC). The main focus is on the controversial scenario RCP 8.5, previously used to describe a future with very high emissions and significant temperature increases.

This scenario has often been associated with catastrophic consequences such as collapsing ecosystems, major sea level rises and extreme heat that could make certain parts of the world difficult to inhabit. However, according to new assessments, this development is no longer likely, among other things because the expansion of renewable energy has been faster than expected and several countries have implemented climate measures.

Critics argue that RCP 8.5 has long been treated as a probable future scenario even though many researchers regarded it as an extreme case. Political scientist and climate commentator Roger Pielke Jr. describes the change as one of the biggest in climate research in decades. He believes that for many years, media and policymakers have based analyses and policy on exaggerated assumptions.

Expected to Have Major Significance

Other scientists warn, however, against concluding that the climate crisis is overstated. Lesley Hughes at Macquarie University emphasizes that scientific consensus remains: emissions from fossil fuels are driving warming and are already leading to more fires, floods, and extreme weather events.

The new guidelines are expected to have significant impact on future research, climate policy, and economic risk assessments worldwide. Meanwhile, the debate continues about how severe future climate change might become and how best to communicate the risks to the public and political leaders.

Intergovernmental Panel on Climate Change, or the UN’s climate panel, was founded in 1988 by the UN agencies World Meteorological Organization (WMO) and UNEP. Its purpose is to collect and evaluate existing research on climate change, its causes, consequences, and possible solutions. The IPCC does not conduct its own research but compiles scientific studies from researchers around the world.

The climate panel publishes major assessment reports about every six to seven years. These reports are used by governments, authorities, and organizations as a basis for climate policy and international negotiations. The work of the IPCC is based on thousands of research articles reviewed by experts before conclusions are established. The organization was awarded the Nobel Peace Prize in 2007 together with Al Gore for its efforts to spread knowledge about climate change.

The IPCC has had a major influence on :censored:6:cdd6bbaa89: climate debate but has also faced criticism over the years. Critics argue, among other things, that some scenarios and projections have sometimes been presented in a way that exaggerates the risks, while others believe the reports have rather been too cautious. Despite the debate, the IPCC is still the most influential international organization for assembling climate science.