It's still possible to prevent the world from warming more than 1.5 C, the authors of the report said. These include the new European Union 2030 renewable energy target of 32%, the new energy efficiency target of 32.5%, the reform of the European Union emission trading system, the emission reduction targets in sectors falling outside the scope of ETS and the integration of land use, land use change and forestry (LULUCF) in the EU's climate and energy framework.
The Paris Agreement adopted by 195 nations at the 21st Conference of the Parties to the UNFCCC in December 2015 included the aim of strengthening the global response to the threat of climate change by "holding the increase in the global average temperature to well below 2 °C above pre- industrial levels and pursuing efforts to limit the temperature increase to 1.5 °C above pre-industrial levels".
The IPCC report makes clear for the first time that limiting warming to 1.5 degrees requires cutting short-lived super climate pollutions-black carbon, methane, and hydrofluorocarbons-along with carbon dioxide, as well as learning how to pull carbon dioxide out of the atmosphere at scale.
So how can we make sure that warming does not exceed 1.5°C and take us into highly risky territory?
The report's release is expected to energize the annual United Nations.
We're on track to hit that 1.5-degree temperature rise by 2040.
- And it just may be enough to save most of the world's coral reefs from dying.
The report underlines how even the smallest increase in the base target would worsen the impact of recent natural disasters. "You know, which group drew it", Trump said on the White House's South Lawn. The lower level would mean the Arctic Ocean would be free of sea ice in summer only once per century not at least once a decade under the higher target. Coral reefs would decline by 70-90 percent with global warming of 1.5 °C, whereas virtually all ( 99 percent) would be lost with 2 °C.
I have been heartened over the past year by the determination of countless Americans to reaffirm their commitment to the Paris Agreement and to keep taking climate change seriously, from state governors and city mayors to business leaders, labour unions, faith groups and ordinary citizens.
Faced with a major United Nations report that warns of floods, drought, extreme heat and increased poverty should the world not take radical action to address climate change, Donald Trump has been uncharacteristically reluctant to speak out. (I probably will try to get through the chapter on the computer climate models, as it usually makes for amusing reading.) But seriously, climate change is an issue that is pining for the fjords, as I wrote to vast outrage in the Wall Street Journal in June. "But doing so would require unprecedented changes".
"I don't think the administration cares about this at all", said Andrew Dessler, a climate scientist at Texas A&M University. "The next few years will be critical in the evolution of these efforts".
Greenpeace East Asia climate and energy campaigner Walton Li said Hong Kong possessed one of the largest carbon footprints in the world and had a responsibility to "radically" revise its emissions strategy. On the plus side, these technologies are becoming increasingly viable, it adds. Estimates suggest that, in addition to climate-friendly allocation of public investments, a potential redirection of 5% to 10% of the annual capital revenues is necessary. We also ask that political discussions be restricted to the topic of the article they follow.