The United Nations Intergovernmental Panel on Climate Change (IPCC) presented its latest report on climate science today. The report says it is unequivocal that climate change is occurring and confirms there is at least 95% certainty that human activities are the principal cause.
In reaction to the report, Climate Action Commissioner Connie Hedegaard said: "The issue is not whether to believe in climate change or not. The issue is whether to follow science or not. The day when all scientists with 100% certainty warn you against climate change, it will be too late. If your doctor was 95% sure you had a serious disease, you would immediately start looking for the cure. Why should we take bigger risks when it's the health of our planet at stake?
She added: Europe will continue to lead the fight against climate change. We have ambitious legislation in place. We are reducing our emissions considerably, expanding renewables and saving energy. And we are getting ready for the next step: climate and energy targets for 2030 that the Commission will present before the end of the year. The reality is that others are now following suit. Europe will continue to demand more action from all the emitters."
The IPCC Working Group I report, Climate Change 2013: The Physical Science Basis, assesses the latest scientific knowledge on climate change. The working group finalised its 'Summary for Policymakers' earlier today in Stockholm. The Working Group 1 report is the first of four reports that together will form the IPCC's Fifth Assessment Report.
Overall, the report confirms and strengthens the key findings of the IPCC's Fourth Assessment Report, published in 2007. It draws on new evidence, more extensive observations, improved climate models, greater understanding of climate processes and a wider range of climate change projections.
Its key findings include: