WASHINGTON—The Intergovernmental Panel on Climate Change (IPCC) released the Working Group II (WGII) portion of its Fifth Assessment Report on climate change. The report focuses on the current and future impacts of climate change and outlines the benefits of reducing emissions and options regarding climate adaptation.
Learn more about the global carbon budget.
There’s a lot we can learn about the "carbon budget"—what it is, what the impacts will be if we exceed it, and how we can stay within it. WRI created a new infographic to help explain the complexities behind this critically important topic.
When President Obama addresses the nation later today, climate change is expected to be featured. The president recently said that one of his personal passions is “leaving a planet that is as spectacular as the one we inherited from our parents and our grandparents.” The next two years will determine if his administration can meet this standard.
An old Wall Street adage says “the market hates uncertainty.” Well, businesses received an unambiguous message last week with the latest Intergovernmental Panel on Climate Change report.
Earlier today, the Intergovernmental Panel on Climate Change (IPCC) released the Summary for Policymakers of Working Group I’s (WGI) portion of the 5th assessment report (AR5) on climate change. The report, focused on the physical science of our climate system, confirms the overwhelming scientific consensus that the world is warming and human activities are responsible. Without immediate action to curb...
EDITOR'S NOTE 11/18/13: After this blog post was published, the IPCC updated its Summary for Policymakers. The figures in this blog post have been updated to reflect new information.
The Intergovernmental Panel on Climate Change’s (IPCC) Fifth Assessment Report (AR5) has delivered an overwhelming consensus that climate change impacts are accelerating, fueled by human-caused emissions. We may have just about 30 years left until the world’s carbon budget is spent if we want a likely chance of limiting warming to 2 degrees C. Breaching this limit would put the world at increased risk of forest fires, coral bleaching, higher sea level rise, and other dangerous impacts.
When Will Our Carbon Budget Run Out?
The international community has adopted a goal for global warming not to rise above 2°C compared to pre-industrial temperatures. Scientists have devoted considerable effort to understanding what magnitude of emissions reductions are necessary to limit warming to this level, as the world faces increasingly dangerous climate change impacts with every degree of warming (see Box 1).
IPCC AR5 summarizes the scientific literature and estimates that cumulative carbon dioxide emissions related to human activities need to be limited to 1 trillion tonnes C (1000 PgC) since the beginning of the industrial revolution if we are to have a likely chance of limiting warming to 2°C. This is “our carbon budget” – the same concept as a checking account. When we’ve spent it all, there’s no more money (and the planet’s overdraft fees will be much more significant than a bank’s small charges for bounced checks).[^1]
As extreme weather events like wildfires, heat waves, downpours, and droughts continue to make headlines in the United States and around the world, many have wondered what their connection is to climate change. A new report sheds some light, firmly drawing correlations between several extreme weather events in 2012 and human-induced warming.
Another season of extreme weather events is upon us. A severe storm, with winds up to 70 miles per hour, whipped its way from Illinois to Washington, D.C. Meanwhile, Colorado is experiencing one of its worst wildfires in history—the Black Forest Fire has burned 15,700 acres, displaced more than 38,000 people, and impacted 13,000 homes. These events are reminders of what the world will look like as our climate system moves into increasingly dangerous and unfamiliar territory.
This week also brought a trifecta of events with significant implications for climate change.
The latest report from the International Energy Agency revealed that energy-related carbon dioxide emissions hit an all-time high in 2012. These emissions are driving up global temperatures and increasing climate instability. The IEA concludes that it’s not too late to change course, but the window for action is closing rapidly.
Our current response to climate change is grossly inadequate. Fortunately, there are some signs that the winds are starting to change.
Temperatures hit an unseasonably warm 61˚F in Washington D.C. earlier this week. The Middle East is blanketed in record rainfall and rare heavy snowfall, ending a nearly decade-long drought. Australia witnessed its hottest day on record this past week, stoking wildfires. And China is experiencing a bitterly cold winter, where temperatures are the lowestthey’ve been in almost three decades. We’re only two weeks into 2013, and already we are getting a reminder of the extreme year we just emerged from.
2012: A Year of Extreme Weather
How extreme were last year’s weather and...