Presenting the most vivid evidence to date, the UN's IPCC report has warned that humans are responsible for changes to the earth's climate.
The UN IPPC report into climate change, due out tomorrow, will say scientists agree the world is getting warmer, and humans are to blame.
The government's top scientific advisor has warned of greater variability in UK weather as a result of climate change
Scientists are more certain than ever that humans are causing the majority of climate change, a key UN report has shown.
The first part of the Intergovernmental Panel on Climate Change's (IPCC) fifth assessment report shows that warming in the climate system is "unequivocal" and human influence on the climate is clear.
The report, which has been published after line-by-line scrutiny by scientists and policymakers, said they are 95% certain that the majority of the warming since the 1950s is down to human activity.
The likelihood is up from a 90% certainty in the last IPCC study in 2007.
A UN panel of climate scientists said 2001-2010 was the warmest decade on record.
Temperatures are expected to rise this century largely due to man-made global warming, a major UN report is to suggest.
UN scientists are expected to say they are 95% sure humans are responsible for climate change in key report to be published today. The findings are expected to show:
- Temperatures will rise by between 0.3C (0.5F) and 4.8C (8.6F) this century
- The lower end of the range will only be possible with emissions cuts deeper than anything that major economies have said they are prepared to tolerate
- Almost 200 governments have agreed in principle to limit global warming to a maximum rise of 2C (3.6F) above pre-industrial times
- The governments have promised to work out a UN deal to limit their emissions accordingly by the end of 2015.
Sceptics have said a slowing of the pace of warming this century after fast gains in the 1980s and 1990s, is a sign that global warming may not be as urgent a problem as previously believed, despite a major UN report on climate change due to be published today.
Some countries stressed that it was also "virtually certain", or at least 99 percent probable, that natural variations in the climate were not the sole cause.
The report will face extra scrutiny after the IPCC made errors in its 2007 report, including an exaggeration of the melt rate of Himalayan glaciers. An outside review of the IPCC found that the mistake did not affect its main conclusions.
Britain's climate could get cooler over the next 80 years, a major report by the UN on global warming is to suggest.
According to the Daily Telegraph, the UN Intergovernmental Panel on Climate Change (IPCC) will say that the circulation of warm and cold water in the Atlantic, which includes the Gulf Stream, will weaken by 20 to 44 per cent by the end of the century.
Scientists claim that such a slow-down in the Gulf Stream will have a big impact on Britain, causing cooling of about 1.8F (1C) and disrupting weather patterns.
The latest update on the state of the world's climate will be released today in Stockholm, Sweden.
Scientists and government officials from 195 countries have meeting all week ahead of the publication from the UN-sponsored Intergovernmental Panel on Climate Change (IPCC).
The report builds on the four previous assessment reports produced by the IPCC since it was established in 1988. It will be published throughout the year in several parts:
- Part one: Physical science basis of climate change - September 2013
- Part two: Dealing with the impacts, adaptation and vulnerability relating to climate change - March 2014
- Part three: Assessing the mitigation of climate change - April 2014
- Final part: Synthesis Report - October 2014
A UN panel of global climate scientists are to make their strongest case yet for man-made global warming in a new report due to be released today.
Drafts show that the Intergovernmental Panel on Climate Change (IPCC) is set to pronounce that most of the warming of the Earth's surface since the 1950s is "extremely likely" - at least 95% probable - to be man-made.
The 30-page summary that the IPCC produces, the first of four about global warming in the coming year, is intended to be the main point of reference on the science of climate change for governments trying to develop their response to global warming.
Tomorrow, international experts will deliver their verdict on the state of climate change and are expected to say they are 95% percent certain it is happening.
ITV News' Science Editor Lawrence McGinty gathered leading leading voices in the global warming debate at London's Thames barrier to discuss the issue.
President Barack Obama said on Saturday that he will outline a climate change plan next Tuesday centred around reducing pollution from carbon emissions.
"This Tuesday, I'll lay out my vision for where I believe we need to go - a national plan to reduce carbon pollution, prepare our country for the impacts of climate change, and lead global efforts to fight it," he said in a White House video.